refactor popup and background with ES6

.eslintrc.js

@@ -48,6 +48,7 @@ module.exports = {
     'no-mixed-operators': ['error', {allowSamePrecedence: true}],
     'no-bitwise': ['error', {int32Hint: true}],
     'no-underscore-dangle': ['off'],
+    'arrow-parens': 0,
   },
   globals: {
     browser: true,

package.json

@@ -4,7 +4,7 @@
   "scripts": {
     "prebuild": "gulp clean",
     "build": "gulp build",
-    "dev": "gulp watch",
+    "dev": "webpack --config scripts/webpack.conf.js",
     "i18n": "gulp i18n",
     "lint": "gulp lint",
     "update": "node scripts/update",
@@ -13,13 +13,20 @@
   },
   "description": "Violentmonkey",
   "devDependencies": {
-    "babel-eslint": "^7.2.0",
+    "babel-core": "^6.24.0",
+    "babel-eslint": "^7.2.1",
+    "babel-loader": "^6.4.1",
+    "babel-plugin-transform-runtime": "^6.23.0",
+    "babel-preset-latest": "^6.24.0",
+    "babel-preset-stage-2": "^6.22.0",
+    "css-loader": "^0.27.3",
     "cssnano": "^3.10.0",
     "del": "^2.2.0",
-    "eslint": "^3.17.1",
-    "eslint-config-airbnb-base": "^11.1.1",
+    "eslint": "^3.18.0",
+    "eslint-config-airbnb-base": "^11.1.2",
     "eslint-friendly-formatter": "^2.0.7",
     "eslint-import-resolver-webpack": "^0.8.1",
+    "eslint-loader": "^1.7.0",
     "eslint-plugin-html": "^2.0.1",
     "eslint-plugin-import": "^2.2.0",
     "extract-text-webpack-plugin": "^2.1.0",
@@ -41,7 +48,10 @@
     "precss": "^1.4.0",
     "svgo": "^0.7.2",
     "through2": "^2.0.3",
-    "webpack": "^2.3.1"
+    "vue-loader": "^11.3.3",
+    "vue-style-loader": "^2.0.4",
+    "vue-template-compiler": "^2.2.5",
+    "webpack": "^2.3.2"
   },
   "author": "Gerald <[email protected]>",
   "repository": {
@@ -54,8 +64,9 @@
   "homepage": "https://github.com/violentmonkey/violentmonkey",
   "license": "MIT",
   "dependencies": {
-    "codemirror": "^5.23.0",
+    "codemirror": "^5.25.0",
     "define-commonjs": "^1.1.2",
-    "vue": "^2.1.10"
+    "sync-promise-lite": "^0.2.3",
+    "vue": "^2.2.5"
   }
 }

scripts/webpack.conf.js

@@ -13,12 +13,12 @@ function resolve (dir) {
 
 module.exports = {
   entry: {
-    'background/app.js': './src/background/app.js',
-    'options/app.js': './src/options/app.js',
-    'popup/app.js': './src/popup/app.js',
+    'background/app': './src/background/app.js',
+    'options/app': './src/options/app.js',
+    'popup/app': './src/popup/app.js',
   },
   output: {
-    path: DIST,
+    path: path.resolve(DIST),
     publicPath: '/',
     filename: '[name].js',
   },
@@ -75,7 +75,7 @@ module.exports = {
       // })
     ] : [
       // extract css into its own file
-      new ExtractTextPlugin(`${DIST}/[name].css`),
+      new ExtractTextPlugin('[name].css'),
       // generate dist index.html with correct asset hash for caching.
       // you can customize output by editing /index.html
       // see https://github.com/ampedandwired/html-webpack-plugin

src/background/app.js

@@ -1,19 +1,17 @@
-var _ = require('src/common');
-var VMDB = require('./db');
-var sync = require('./sync');
-var requests = require('./requests');
-var cache = require('./utils/cache');
-var scriptUtils = require('./utils/script');
-var clipboard = require('./utils/clipboard');
-var options = require('./options');
+import { i18n, defaultImage } from 'src/common';
+import * as sync from './sync';
+import { getRequestId, httpRequest, abortRequest } from './utils/requests';
+import { getCache } from './utils/cache';
+import { newScript, parseMeta } from './utils/script';
+import { setClipboard } from './utils/clipboard';
+import { getOption, setOption, hookOptions, getAllOptions } from './utils/options';
+import * as vmdb from './utils/db';
+import checkUpdate from './utils/update';
 
-var vmdb = exports.vmdb = new VMDB;
-var VM_VER = browser.runtime.getManifest().version;
+const VM_VER = browser.runtime.getManifest().version;
 
-options.hook(function (changes) {
-  if ('isApplied' in changes) {
-    setIcon(changes.isApplied);
-  }
+hookOptions(changes => {
+  if ('isApplied' in changes) setIcon(changes.isApplied);
   browser.runtime.sendMessage({
     cmd: 'UpdateOptions',
     data: changes,
@@ -22,69 +20,68 @@ options.hook(function (changes) {
 
 function broadcast(data) {
   browser.tabs.query({})
-  .then(function (tabs) {
-    tabs.forEach(function (tab) {
+  .then(tabs => {
+    tabs.forEach(tab => {
       browser.tabs.sendMessage(tab.id, data);
     });
   });
 }
 
-var autoUpdate = function () {
+function checkUpdateAll() {
+  setOption('lastUpdate', Date.now());
+  vmdb.getScriptsByIndex('update', 1)
+  .then(scripts => Promise.all(scripts.map(checkUpdate)));
+}
+
+let autoUpdating;
+function autoUpdate() {
+  if (autoUpdating) return;
+  autoUpdating = true;
+  check();
   function check() {
-    checking = true;
-    return new Promise(function (resolve, reject) {
-      if (!options.get('autoUpdate')) return reject();
-      if (Date.now() - options.get('lastUpdate') >= 864e5)
-        resolve(commands.CheckUpdateAll());
-    }).then(function () {
-      setTimeout(check, 36e5);
-    }, function () {
-      checking = false;
-    });
+    new Promise((resolve, reject) => {
+      if (!getOption('autoUpdate')) return reject();
+      if (Date.now() - getOption('lastUpdate') >= 864e5) resolve(checkUpdateAll());
+    })
+    .then(() => setTimeout(check, 36e5), () => { autoUpdating = false; });
   }
-  var checking;
-  return function () {
-    checking || check();
-  };
-}();
-var commands = {
-  NewScript: function (_data, _src) {
-    return scriptUtils.newScript();
+}
+
+const commands = {
+  NewScript() {
+    return newScript();
   },
-  RemoveScript: function (id, _src) {
+  RemoveScript(id) {
     return vmdb.removeScript(id)
-    .then(function () {
-      sync.sync();
-    });
+    .then(() => { sync.sync(); });
   },
-  GetData: function (_data, _src) {
-    return vmdb.getData().then(function (data) {
-      data.sync = sync.states();
+  GetData() {
+    return vmdb.getData().then(data => {
+      data.sync = sync.getStates();
       data.version = VM_VER;
       return data;
     });
   },
-  GetInjected: function (url, src) {
-    var data = {
-      isApplied: options.get('isApplied'),
+  GetInjected(url, src) {
+    const data = {
+      isApplied: getOption('isApplied'),
       version: VM_VER,
     };
-    setTimeout(function () {
+    setTimeout(() => {
       // delayed to wait for the tab URL updated
       if (src.tab && url === src.tab.url) {
-        browser.tabs.sendMessage(src.tab.id, {cmd: 'GetBadge'});
+        browser.tabs.sendMessage(src.tab.id, { cmd: 'GetBadge' });
       }
     });
     return data.isApplied
-      ? vmdb.getScriptsByURL(url).then(function (res) {
-        return Object.assign(data, res);
-      }) : data;
+    ? vmdb.getScriptsByURL(url).then(res => Object.assign(data, res))
+    : data;
   },
-  UpdateScriptInfo: function (data, _src) {
+  UpdateScriptInfo(data) {
     return vmdb.updateScriptInfo(data.id, data, {
       modified: Date.now(),
     })
-    .then(function (script) {
+    .then(script => {
       sync.sync();
       browser.runtime.sendMessage({
         cmd: 'UpdateScript',
@@ -92,9 +89,9 @@ var commands = {
       });
     });
   },
-  SetValue: function (data, _src) {
+  SetValue(data) {
     return vmdb.setValue(data.uri, data.values)
-    .then(function () {
+    .then(() => {
       broadcast({
         cmd: 'UpdateValues',
         data: {
@@ -104,29 +101,27 @@ var commands = {
       });
     });
   },
-  ExportZip: function (data, _src) {
+  ExportZip(data) {
     return vmdb.getExportData(data.ids, data.values);
   },
-  GetScript: function (id, _src) {
+  GetScript(id) {
     return vmdb.getScriptData(id);
   },
-  GetMetas: function (ids, _src) {
+  GetMetas(ids) {
     return vmdb.getScriptInfos(ids);
   },
-  Move: function (data, _src) {
+  Move(data) {
     return vmdb.moveScript(data.id, data.offset);
   },
-  Vacuum: function (_data, _src) {
-    return vmdb.vacuum();
-  },
-  ParseScript: function (data, _src) {
-    return vmdb.parseScript(data).then(function (res) {
-      var meta = res.data.meta;
-      if (!meta.grant.length && !options.get('ignoreGrant')) {
+  Vacuum: vmdb.vacuum,
+  ParseScript(data) {
+    return vmdb.parseScript(data).then(res => {
+      const { meta } = res.data;
+      if (!meta.grant.length && !getOption('ignoreGrant')) {
         notify({
           id: 'VM-NoGrantWarning',
-          title: _.i18n('Warning'),
-          body: _.i18n('msgWarnGrant', [meta.name || _.i18n('labelNoName')]),
+          title: i18n('Warning'),
+          body: i18n('msgWarnGrant', [meta.name || i18n('labelNoName')]),
           isClickable: true,
         });
       }
@@ -135,86 +130,63 @@ var commands = {
       return res.data;
     });
   },
-  CheckUpdate: function (id, _src) {
-    vmdb.getScript(id).then(vmdb.checkUpdate);
+  CheckUpdate(id) {
+    vmdb.getScript(id).then(checkUpdate);
   },
-  CheckUpdateAll: function (_data, _src) {
-    options.set('lastUpdate', Date.now());
-    vmdb.getScriptsByIndex('update', 1).then(function (scripts) {
-      return Promise.all(scripts.map(vmdb.checkUpdate));
-    });
-  },
-  ParseMeta: function (code, _src) {
-    return scriptUtils.parseMeta(code);
+  CheckUpdateAll: checkUpdateAll,
+  ParseMeta(code) {
+    return parseMeta(code);
   },
   AutoUpdate: autoUpdate,
-  GetRequestId: function (_data, _src) {
-    return requests.getRequestId();
-  },
-  HttpRequest: function (details, src) {
-    requests.httpRequest(details, function (res) {
+  GetRequestId: getRequestId,
+  HttpRequest(details, src) {
+    httpRequest(details, res => {
       browser.tabs.sendMessage(src.tab.id, {
         cmd: 'HttpRequested',
         data: res,
       });
     });
   },
-  AbortRequest: function (id, _src) {
-    return requests.abortRequest(id);
-  },
-  SetBadge: function (num, src) {
-    setBadge(num, src);
+  AbortRequest: abortRequest,
+  SetBadge: setBadge,
+  SyncAuthorize: sync.authorize,
+  SyncRevoke: sync.revoke,
+  SyncStart: sync.sync,
+  GetFromCache(data) {
+    return getCache(data) || null;
   },
-  SyncAuthorize: function (_data, _src) {
-    sync.authorize();
-  },
-  SyncRevoke: function (_data, _src) {
-    sync.revoke();
-  },
-  SyncStart: function (_data, _src) {
-    sync.sync();
-  },
-  GetFromCache: function (data, _src) {
-    return cache.get(data) || null;
-  },
-  Notification: function (data, _src) {
+  Notification(data) {
     return browser.notifications.create({
       type: 'basic',
-      title: data.title || _.i18n('extName'),
+      title: data.title || i18n('extName'),
       message: data.text,
-      iconUrl: data.image || _.defaultImage,
+      iconUrl: data.image || defaultImage,
     });
   },
-  SetClipboard: function (data, _src) {
-    clipboard.set(data);
-  },
-  OpenTab: function (data, _src) {
+  SetClipboard: setClipboard,
+  OpenTab(data) {
     browser.tabs.create({
       url: data.url,
       active: data.active,
     });
   },
-  GetAllOptions: function (_data, _src) {
-    return options.getAll();
-  },
-  GetOptions: function (data, _src) {
-    return data.reduce(function (res, key) {
-      res[key] = options.get(key);
+  GetAllOptions: getAllOptions,
+  GetOptions(data) {
+    return data.reduce((res, key) => {
+      res[key] = getOption(key);
       return res;
     }, {});
   },
-  SetOptions: function (data, _src) {
-    if (!Array.isArray(data)) data = [data];
-    data.forEach(function (item) {
-      options.set(item.key, item.value);
-    });
+  SetOptions(data) {
+    const items = Array.isArray(data) ? data : [data];
+    items.forEach(item => { setOption(item.key, item.value); });
   },
 };
 
-vmdb.initialized.then(function () {
-  browser.runtime.onMessage.addListener(function (req, src) {
-    var func = commands[req.cmd];
-    var res;
+vmdb.initialized.then(() => {
+  browser.runtime.onMessage.addListener((req, src) => {
+    const func = commands[req.cmd];
+    let res;
     if (func) {
       res = func(req.data, src);
       if (typeof res !== 'undefined') {
@@ -233,46 +205,45 @@ vmdb.initialized.then(function () {
 function notify(options) {
   browser.notifications.create(options.id || 'ViolentMonkey', {
     type: 'basic',
-    iconUrl: _.defaultImage,
-    title: options.title + ' - ' + _.i18n('extName'),
+    iconUrl: defaultImage,
+    title: `${options.title} - ${i18n('extName')}`,
     message: options.body,
     isClickable: options.isClickable,
   });
 }
 
-var setBadge = function () {
-  var badges = {};
-  return function (num, src) {
-    var o = badges[src.id];
-    if (!o) o = badges[src.id] = {num: 0};
-    o.num += num;
-    browser.browserAction.setBadgeBackgroundColor({
-      color: '#808',
-      tabId: src.tab.id,
-    });
-    var text = (options.get('showBadge') && o.num || '').toString();
-    browser.browserAction.setBadgeText({
-      text: text,
-      tabId: src.tab.id,
-    });
-    if (o.timer) clearTimeout(o.timer);
-    o.timer = setTimeout(function () {
-      delete badges[src.id];
-    }, 300);
-  };
-}();
+const badges = {};
+function setBadge(num, src) {
+  let data = badges[src.id];
+  if (!data) {
+    data = { num: 0 };
+    badges[src.id] = data;
+  }
+  data.num += num;
+  browser.browserAction.setBadgeBackgroundColor({
+    color: '#808',
+    tabId: src.tab.id,
+  });
+  const text = ((getOption('showBadge') && data.num) || '').toString();
+  browser.browserAction.setBadgeText({
+    text,
+    tabId: src.tab.id,
+  });
+  if (data.timer) clearTimeout(data.timer);
+  data.timer = setTimeout(() => { delete badges[src.id]; }, 300);
+}
 
 function setIcon(isApplied) {
   browser.browserAction.setIcon({
     path: {
-      19: '/public/images/icon19' + (isApplied ? '' : 'w') + '.png',
-      38: '/public/images/icon38' + (isApplied ? '' : 'w') + '.png'
+      19: `/public/images/icon19${isApplied ? '' : 'w'}.png`,
+      38: `/public/images/icon38${isApplied ? '' : 'w'}.png`,
     },
   });
 }
-setIcon(options.get('isApplied'));
+setIcon(getOption('isApplied'));
 
-browser.notifications.onClicked.addListener(function (id) {
+browser.notifications.onClicked.addListener(id => {
   if (id === 'VM-NoGrantWarning') {
     browser.tabs.create({
       url: 'http://wiki.greasespot.net/@grant',
@@ -285,7 +256,7 @@ browser.notifications.onClicked.addListener(function (id) {
   }
 });
 
-browser.notifications.onClosed.addListener(function (id) {
+browser.notifications.onClosed.addListener(id => {
   broadcast({
     cmd: 'NotificationClose',
     data: id,

src/background/db.js

@@ -1,666 +0,0 @@
-var scriptUtils = require('./utils/script');
-var tester = require('./utils/tester');
-var Promise = require('./utils/sync-promise');
-var _ = require('../common');
-
-function VMDB() {
-  var _this = this;
-  _this.initialized = _this.openDB().then(_this.initPosition.bind(_this));
-  _this.checkUpdate = _this.checkUpdate.bind(_this);
-}
-
-VMDB.prototype.openDB = function () {
-  var _this = this;
-  return new Promise(function (resolve, reject) {
-    var request = indexedDB.open('Violentmonkey', 1);
-    request.onsuccess = function (_e) {
-      _this.db = request.result;
-      resolve();
-    };
-    request.onerror = function (e) {
-      var err = e.target.error;
-      console.error('IndexedDB error: ' + err.message);
-      reject(err);
-    };
-    request.onupgradeneeded = function (e) {
-      var r = e.currentTarget.result;
-      // scripts: id uri custom meta enabled update code position
-      var o = r.createObjectStore('scripts', {
-        keyPath: 'id',
-        autoIncrement: true,
-      });
-      o.createIndex('uri', 'uri', {unique: true});
-      o.createIndex('update', 'update', {unique: false});
-      // position should be unique at last
-      o.createIndex('position', 'position', {unique: false});
-      // require: uri code
-      o = r.createObjectStore('require', {keyPath: 'uri'});
-      // cache: uri data
-      o = r.createObjectStore('cache', {keyPath: 'uri'});
-      // values: uri values
-      o = r.createObjectStore('values', {keyPath: 'uri'});
-    };
-  });
-};
-
-VMDB.prototype.initPosition = function () {
-  var _this = this;
-  _this.position = 0;
-  var o = _this.db.transaction('scripts', 'readwrite').objectStore('scripts');
-  return new Promise(function (resolve, _reject) {
-    o.index('position').openCursor(null, 'prev').onsuccess = function (e) {
-      var result = e.target.result;
-      if (result) _this.position = result.key;
-      resolve();
-    };
-  });
-};
-
-VMDB.prototype.getScript = function (id, tx) {
-  tx = tx || this.db.transaction('scripts');
-  var os = tx.objectStore('scripts');
-  return new Promise(function (resolve, _reject) {
-    os.get(id).onsuccess = function (e) {
-      resolve(e.target.result);
-    };
-  });
-};
-
-VMDB.prototype.queryScript = function (id, meta, tx) {
-  var _this = this;
-  return id
-    ? _this.getScript(id, tx)
-    : new Promise(function (resolve, _reject) {
-      var uri = scriptUtils.getNameURI({meta: meta});
-      tx = tx || _this.db.transaction('scripts');
-      tx.objectStore('scripts')
-      .index('uri').get(uri).onsuccess = function (e) {
-        resolve(e.target.result);
-      };
-    });
-};
-
-VMDB.prototype.getScriptData = function (id) {
-  return this.getScript(id).then(function (script) {
-    if (!script) return Promise.reject();
-    var data = scriptUtils.getScriptInfo(script);
-    data.code = script.code;
-    return data;
-  });
-};
-
-VMDB.prototype.getScriptInfos = function (ids) {
-  var _this = this;
-  var tx = _this.db.transaction('scripts');
-  return Promise.all(ids.map(function (id) {
-    return _this.getScript(id, tx);
-  })).then(function (scripts) {
-    return scripts.filter(function (x) {return x;})
-    .map(scriptUtils.getScriptInfo);
-  });
-};
-
-VMDB.prototype.getValues = function (uris, tx) {
-  var _this = this;
-  tx = tx || _this.db.transaction('values');
-  var o = tx.objectStore('values');
-  return Promise.all(uris.map(function (uri) {
-    return new Promise(function (resolve, _reject) {
-      o.get(uri).onsuccess = function (e) {
-        resolve(e.target.result);
-      };
-    });
-  })).then(function (data) {
-    return data.reduce(function (result, value, i) {
-      if (value) result[uris[i]] = value.values;
-      return result;
-    }, {});
-  });
-};
-
-VMDB.prototype.getScriptsByURL = function (url) {
-  function getScripts() {
-    return _this.getScriptsByIndex('position', null, tx).then(function (scripts) {
-      var data = {
-        uris: [],
-      };
-      var require = {};
-      var cache = {};
-      data.scripts = scripts.filter(function (script) {
-        if (!tester.testBlacklist(url) && tester.testScript(url, script)) {
-          data.uris.push(script.uri);
-          script.meta.require.forEach(function (key) {
-            require[key] = 1;
-          });
-          Object.keys(script.meta.resources).forEach(function (key) {
-            cache[script.meta.resources[key]] = 1;
-          });
-          return true;
-        }
-      });
-      data.require = Object.keys(require);
-      data.cache = Object.keys(cache);
-      return data;
-    });
-  }
-  function getRequire(uris) {
-    var o = tx.objectStore('require');
-    return Promise.all(uris.map(function (uri) {
-      return new Promise(function (resolve, _reject) {
-        o.get(uri).onsuccess = function (e) {
-          resolve(e.target.result);
-        };
-      });
-    })).then(function (data) {
-      return data.reduce(function (result, value, i) {
-        if (value) result[uris[i]] = value.code;
-        return result;
-      }, {});
-    });
-  }
-  var _this = this;
-  var tx = _this.db.transaction(['scripts', 'require', 'values', 'cache']);
-  return getScripts().then(function (data) {
-    return Promise.all([
-      getRequire(data.require),
-      _this.getValues(data.uris, tx),
-      _this.getCacheB64(data.cache, tx),
-    ]).then(function (res) {
-      return {
-        scripts: data.scripts,
-        require: res[0],
-        values: res[1],
-        cache: res[2],
-      };
-    });
-  });
-};
-
-VMDB.prototype.getData = function () {
-  function getScripts() {
-    return _this.getScriptsByIndex('position', null, tx).then(function (scripts) {
-      var data = {};
-      var cache = {};
-      data.scripts = scripts.map(function (script) {
-        var icon = script.meta.icon;
-        if (scriptUtils.isRemote(icon)) cache[icon] = 1;
-        return scriptUtils.getScriptInfo(script);
-      });
-      data.cache = Object.keys(cache);
-      return data;
-    });
-  }
-  function getCache(uris) {
-    return _this.getCacheB64(uris, tx).then(function (cache) {
-      Object.keys(cache).forEach(function (key) {
-        cache[key] = 'data:image/png;base64,' + cache[key];
-      });
-      return cache;
-    });
-  }
-  var _this = this;
-  var tx = _this.db.transaction(['scripts', 'cache']);
-  return getScripts().then(function (data) {
-    return getCache(data.cache).then(function (cache) {
-      return {
-        scripts: data.scripts,
-        cache: cache,
-      };
-    });
-  });
-};
-
-VMDB.prototype.removeScript = function (id) {
-  var tx = this.db.transaction('scripts', 'readwrite');
-  return new Promise(function (resolve, _reject) {
-    var o = tx.objectStore('scripts');
-    o.delete(id).onsuccess = function () {
-      resolve();
-    };
-  })
-  .then(function () {
-    browser.runtime.sendMessage({
-      cmd: 'RemoveScript',
-      data: id,
-    });
-  });
-};
-
-VMDB.prototype.moveScript = function (id, offset) {
-  var tx = this.db.transaction('scripts', 'readwrite');
-  var o = tx.objectStore('scripts');
-  return this.getScript(id, tx).then(function (script) {
-    var pos = script.position;
-    var range, order;
-    if (offset < 0) {
-      range = IDBKeyRange.upperBound(pos, true);
-      order = 'prev';
-      offset = -offset;
-    } else {
-      range = IDBKeyRange.lowerBound(pos, true);
-      order = 'next';
-    }
-    return new Promise(function (resolve, _reject) {
-      o.index('position').openCursor(range, order).onsuccess = function (e) {
-        var result = e.target.result;
-        if (result) {
-          offset --;
-          var value = result.value;
-          value.position = pos;
-          pos = result.key;
-          result.update(value);
-          if (offset) result.continue();
-          else {
-            script.position = pos;
-            o.put(script).onsuccess = function () {
-              resolve();
-            };
-          }
-        }
-      };
-    });
-  });
-};
-
-VMDB.prototype.getCacheB64 = function (urls, tx) {
-  tx = tx || this.db.transaction('cache');
-  var o = tx.objectStore('cache');
-  return Promise.all(urls.map(function (url) {
-    return new Promise(function (resolve, _reject) {
-      o.get(url).onsuccess = function (e) {
-        resolve(e.target.result);
-      };
-    });
-  })).then(function (data) {
-    return data.reduce(function (map, value, i) {
-      if (value) map[urls[i]] = value.data;
-      return map;
-    }, {});
-  });
-};
-
-VMDB.prototype.saveCache = function (url, data, tx) {
-  tx = tx || this.db.transaction('cache', 'readwrite');
-  var o = tx.objectStore('cache');
-  return new Promise(function (resolve, _reject) {
-    o.put({uri: url, data: data}).onsuccess = function () {
-      resolve();
-    };
-  });
-};
-
-VMDB.prototype.saveRequire = function (url, data, tx) {
-  tx = tx || this.db.transaction('require', 'readwrite');
-  var o = tx.objectStore('require');
-  return new Promise(function (resolve, _reject) {
-    o.put({uri: url, code: data}).onsuccess = function () {
-      resolve();
-    };
-  });
-};
-
-VMDB.prototype.saveScript = function (script, tx) {
-  script.enabled = script.enabled ? 1 : 0;
-  script.update = script.update ? 1 : 0;
-  if (!script.position) script.position = ++ this.position;
-  tx = tx || this.db.transaction('scripts', 'readwrite');
-  var o = tx.objectStore('scripts');
-  return new Promise(function (resolve, reject) {
-    var res = o.put(script);
-    res.onsuccess = function (e) {
-      script.id = e.target.result;
-      resolve(script);
-    };
-    res.onerror = function () {
-      reject(_.i18n('msgNamespaceConflict'));
-    };
-  });
-};
-
-VMDB.prototype.fetchCache = function () {
-  var requests = {};
-  return function (url, check) {
-    var _this = this;
-    return requests[url]
-      || (requests[url] = scriptUtils.fetch(url, 'blob').then(function (res) {
-        return (check ? check(res.response) : Promise.resolve()).then(function () {
-          return res.response;
-        });
-      }).then(function (data) {
-        return new Promise(function (resolve, reject) {
-          var reader = new FileReader;
-          reader.onload = function (_e) {
-            _this.saveCache(url, window.btoa(this.result)).then(function () {
-              delete requests[url];
-              resolve();
-            });
-          };
-          reader.onerror = function (e) {
-            reject(e);
-          };
-          reader.readAsBinaryString(data);
-        });
-      }));
-  };
-}();
-
-VMDB.prototype.fetchRequire = function () {
-  var requests = {};
-  return function (url) {
-    var _this = this;
-    var promise = requests[url];
-    if (!promise) {
-      promise = requests[url] = scriptUtils.fetch(url)
-      .then(function (res) {
-        return _this.saveRequire(url, res.responseText);
-      })
-      .catch(function () {
-        console.error('Error fetching required script: ' + url);
-      })
-      .then(function () {
-        delete requests[url];
-      });
-    }
-    return promise;
-  };
-}();
-
-VMDB.prototype.setValue = function (uri, values) {
-  var o = this.db.transaction('values', 'readwrite').objectStore('values');
-  return new Promise(function (resolve, _reject) {
-    o.put({uri: uri, values: values}).onsuccess = function () {
-      resolve();
-    };
-  });
-};
-
-VMDB.prototype.updateScriptInfo = function (id, data, custom) {
-  var o = this.db.transaction('scripts', 'readwrite').objectStore('scripts');
-  return new Promise(function (resolve, reject) {
-    o.get(id).onsuccess = function (e) {
-      var script = e.target.result;
-      if (!script) return reject();
-      Object.keys(data).forEach(function (key) {
-        if (key in script) script[key] = data[key];
-      });
-      Object.assign(script.custom, custom);
-      o.put(script).onsuccess = function (_e) {
-        resolve(scriptUtils.getScriptInfo(script));
-      };
-    };
-  });
-};
-
-VMDB.prototype.getExportData = function (ids, withValues) {
-  function getScripts(ids) {
-    var o = tx.objectStore('scripts');
-    return Promise.all(ids.map(function (id) {
-      return new Promise(function (resolve, _reject) {
-        o.get(id).onsuccess = function (e) {
-          resolve(e.target.result);
-        };
-      });
-    })).then(function (data) {
-      return data.filter(function (x) {return x;});
-    });
-  }
-  var _this = this;
-  var tx = _this.db.transaction(['scripts', 'values']);
-  return getScripts(ids).then(function (scripts) {
-    var res = {
-      scripts: scripts,
-    };
-    return withValues
-      ? _this.getValues(scripts.map(function (script) {
-        return script.uri;
-      }), tx).then(function (values) {
-        res.values = values;
-        return res;
-      }) : res;
-  });
-};
-
-VMDB.prototype.vacuum = function () {
-  function getScripts() {
-    return _this.getScriptsByIndex('position', null, tx).then(function (scripts) {
-      var data = {
-        require: {},
-        cache: {},
-        values: {},
-      };
-      data.ids = scripts.map(function (script) {
-        script.meta.require.forEach(function (uri) {data.require[uri] = 1;});
-        Object.keys(script.meta.resources).forEach(function (key) {
-          data.cache[script.meta.resources[key]] = 1;
-        });
-        if (scriptUtils.isRemote(script.meta.icon))
-          data.cache[script.meta.icon] = 1;
-        data.values[script.uri] = 1;
-        return script.id;
-      });
-      return data;
-    });
-  }
-  function vacuumPosition(ids) {
-    var o = tx.objectStore('scripts');
-    return ids.reduce(function (res, id, i) {
-      return res.then(function () {
-        return new Promise(function (resolve, _reject) {
-          o.get(id).onsuccess = function (e) {
-            var result = e.target.result;
-            result.position = i + 1;
-            o.put(result).onsuccess = function () {
-              resolve();
-            };
-          };
-        });
-      });
-    }, Promise.resolve());
-  }
-  function vacuumCache(dbName, dict) {
-    return new Promise(function (resolve, _reject) {
-      var o = tx.objectStore(dbName);
-      o.openCursor().onsuccess = function (e) {
-        var result = e.target.result;
-        if (result) {
-          var value = result.value;
-          new Promise(function (resolve, _reject) {
-            if (!dict[value.uri]) {
-              o.delete(value.uri).onsuccess = function () {
-                resolve();
-              };
-            } else {
-              dict[value.uri] ++;
-              resolve();
-            }
-          }).then(function () {
-            result.continue();
-          });
-        } else resolve();
-      };
-    });
-  }
-  var _this = this;
-  var tx = _this.db.transaction(['scripts', 'require', 'cache', 'values'], 'readwrite');
-  return getScripts().then(function (data) {
-    return Promise.all([
-      vacuumPosition(data.ids),
-      vacuumCache('require', data.require),
-      vacuumCache('cache', data.cache),
-      vacuumCache('values', data.values),
-    ]).then(function () {
-      return {
-        require: data.require,
-        cache: data.cache,
-      };
-    });
-  }).then(function (data) {
-    return Promise.all([
-      Object.keys(data.require).map(function (k) {
-        return data.require[k] === 1 && _this.fetchRequire(k);
-      }),
-      Object.keys(data.cache).map(function (k) {
-        return data.cache[k] === 1 && _this.fetchCache(k);
-      }),
-    ]);
-  });
-};
-
-VMDB.prototype.getScriptsByIndex = function (index, value, tx) {
-  tx = tx || this.db.transaction('scripts');
-  return new Promise(function (resolve, _reject) {
-    var o = tx.objectStore('scripts');
-    var list = [];
-    o.index(index).openCursor(value).onsuccess = function (e) {
-      var result = e.target.result;
-      if (result) {
-        list.push(result.value);
-        result.continue();
-      } else resolve(list);
-    };
-  });
-};
-
-VMDB.prototype.parseScript = function (data) {
-  var meta = scriptUtils.parseMeta(data.code);
-  if (!meta.name) return Promise.reject(_.i18n('msgInvalidScript'));
-  var res = {
-    cmd: 'UpdateScript',
-    data: {
-      message: data.message == null ? _.i18n('msgUpdated') : data.message || '',
-    },
-  };
-  var _this = this;
-  var tx = _this.db.transaction(['scripts', 'require'], 'readwrite');
-  // @require
-  meta.require.forEach(function (url) {
-    var cache = data.require && data.require[url];
-    cache ? _this.saveRequire(url, cache, tx) : _this.fetchRequire(url);
-  });
-  // @resource
-  Object.keys(meta.resources).forEach(function (k) {
-    var url = meta.resources[k];
-    var cache = data.resources && data.resources[url];
-    cache ? _this.saveCache(url, cache) : _this.fetchCache(url);
-  });
-  // @icon
-  if (scriptUtils.isRemote(meta.icon))
-    _this.fetchCache(meta.icon, function (blob) {
-      return new Promise(function (resolve, reject) {
-        var url = URL.createObjectURL(blob);
-        var image = new Image;
-        var free = function () {
-          URL.revokeObjectURL(url);
-        };
-        image.onload = function () {
-          free();
-          resolve(blob);
-        };
-        image.onerror = function () {
-          free();
-          reject();
-        };
-        image.src = url;
-      });
-    });
-  return _this.queryScript(data.id, meta, tx).then(function (script) {
-    if (script) {
-      if (data.isNew) throw _.i18n('msgNamespaceConflict');
-    } else {
-      script = scriptUtils.newScript();
-      res.cmd = 'AddScript';
-      res.data.message = _.i18n('msgInstalled');
-    }
-    data.more && Object.keys(data.more).forEach(function (key) {
-      if (key in script) script[key] = data.more[key];
-    });
-    script.meta = meta;
-    script.code = data.code;
-    script.uri = scriptUtils.getNameURI(script);
-    // use referer page as default homepage
-    if (!meta.homepageURL && !script.custom.homepageURL && scriptUtils.isRemote(data.from))
-      script.custom.homepageURL = data.from;
-    if (scriptUtils.isRemote(data.url))
-      script.custom.lastInstallURL = data.url;
-    script.custom.modified = data.modified || Date.now();
-    return _this.saveScript(script, tx);
-  }).then(function (script) {
-    Object.assign(res.data, scriptUtils.getScriptInfo(script));
-    return res;
-  });
-};
-
-VMDB.prototype.checkUpdate = function () {
-  function check(script) {
-    var res = {
-      cmd: 'UpdateScript',
-      data: {
-        id: script.id,
-        checking: true,
-      },
-    };
-    var downloadURL = script.custom.downloadURL || script.meta.downloadURL || script.custom.lastInstallURL;
-    var updateURL = script.custom.updateURL || script.meta.updateURL || downloadURL;
-    var okHandler = function (xhr) {
-      var meta = scriptUtils.parseMeta(xhr.responseText);
-      if (scriptUtils.compareVersion(script.meta.version, meta.version) < 0)
-        return Promise.resolve();
-      res.data.checking = false;
-      res.data.message = _.i18n('msgNoUpdate');
-      browser.runtime.sendMessage(res);
-      return Promise.reject();
-    };
-    var errHandler = function (_xhr) {
-      res.data.checking = false;
-      res.data.message = _.i18n('msgErrorFetchingUpdateInfo');
-      browser.runtime.sendMessage(res);
-      return Promise.reject();
-    };
-    var update = function () {
-      if (!downloadURL) {
-        res.data.message = '<span class="new">' + _.i18n('msgNewVersion') + '</span>';
-        browser.runtime.sendMessage(res);
-        return Promise.reject();
-      }
-      res.data.message = _.i18n('msgUpdating');
-      browser.runtime.sendMessage(res);
-      return scriptUtils.fetch(downloadURL).then(function (xhr) {
-        return xhr.responseText;
-      }, function (_xhr) {
-        res.data.checking = false;
-        res.data.message = _.i18n('msgErrorFetchingScript');
-        browser.runtime.sendMessage(res);
-        return Promise.reject();
-      });
-    };
-    if (!updateURL) return Promise.reject();
-    res.data.message = _.i18n('msgCheckingForUpdate');
-    browser.runtime.sendMessage(res);
-    return scriptUtils.fetch(updateURL, null, {
-      Accept: 'text/x-userscript-meta',
-    }).then(okHandler, errHandler).then(update);
-  }
-
-  var processes = {};
-  return function (script) {
-    var _this = this;
-    var promise = processes[script.id];
-    if (!promise)
-      promise = processes[script.id] = check(script).then(function (code) {
-        delete processes[script.id];
-        return _this.parseScript({
-          id: script.id,
-          code: code,
-        }).then(function (res) {
-          res.data.checking = false;
-          browser.runtime.sendMessage(res);
-        });
-      }, function () {
-        delete processes[script.id];
-        //return Promise.reject();
-      });
-    return promise;
-  };
-}();
-
-module.exports = VMDB;

src/background/index.html

@@ -1,13 +1,9 @@
 <!DOCTYPE html>
 <html>
 <head>
-  <meta charset="utf-8">
-  <title>ViolentMonkey</title>
-  <script src="/public/lib/define.js"></script>
-  <script src="/public/mylib/browser.js"></script>
-  <script src="/common.js"></script>
+<meta charset="utf-8">
+<title>ViolentMonkey</title>
+<script src="/public/mylib/browser.js"></script>
 </head>
-<body>
-  <script src="app.js"></script>
-</body>
+<body></body>
 </html>

src/background/options.js

@@ -1,75 +0,0 @@
-var _ = require('src/common');
-
-var defaults = {
-  isApplied: true,
-  autoUpdate: true,
-  ignoreGrant: false,
-  lastUpdate: 0,
-  showBadge: true,
-  exportValues: true,
-  closeAfterInstall: false,
-  trackLocalFile: false,
-  autoReload: false,
-  features: null,
-  blacklist: null,
-  syncScriptStatus: true,
-  sync: null,
-  customCSS: null,
-};
-var changes = {};
-var hooks = _.initHooks();
-var callHooksLater = _.debounce(callHooks, 100);
-
-function fireChange(key, value) {
-  changes[key] = value;
-  callHooksLater();
-}
-
-function callHooks() {
-  hooks.fire(changes);
-  changes = {};
-}
-
-function getOption(key, def) {
-  var keys = _.normalizeKeys(key);
-  key = keys[0];
-  var value = localStorage.getItem(key), obj;
-  if (value) {
-    try {
-      obj = JSON.parse(value);
-    } catch (e) {
-      // ignore invalid JSON
-    }
-  }
-  if (obj == null) obj = defaults[key];
-  if (obj == null) obj = def;
-  return keys.length > 1 ? _.object.get(obj, keys.slice(1), def) : obj;
-}
-
-function setOption(key, value) {
-  var keys = _.normalizeKeys(key);
-  var optionKey = keys.join('.');
-  var optionValue = value;
-  key = keys[0];
-  if (key in defaults) {
-    if (keys.length > 1) {
-      optionValue = _.object.set(getOption(key), keys.slice(1), value);
-    }
-    localStorage.setItem(key, JSON.stringify(optionValue));
-    fireChange(optionKey, value);
-  }
-}
-
-function getAllOptions() {
-  return Object.keys(defaults).reduce(function (res, key) {
-    res[key] = getOption(key);
-    return res;
-  }, {});
-}
-
-module.exports = {
-  get: getOption,
-  set: setOption,
-  getAll: getAllOptions,
-  hook: hooks.hook,
-};

src/background/requests.js

@@ -1,226 +0,0 @@
-var cache = require('./utils/cache');
-var _ = require('../common');
-
-var requests = {};
-var verify = {};
-var special_headers = [
-  'user-agent',
-  'referer',
-  'origin',
-  'host',
-];
-// var tasks = {};
-
-function getRequestId() {
-  var id = _.getUniqId();
-  requests[id] = {
-    id: id,
-    xhr: new XMLHttpRequest,
-  };
-  return id;
-}
-
-function xhrCallbackWrapper(req) {
-  var lastPromise = Promise.resolve();
-  var xhr = req.xhr;
-  return function (evt) {
-    var res = {
-      id: req.id,
-      type: evt.type,
-      resType: xhr.responseType,
-    };
-    var data = res.data = {
-      finalUrl: req.finalUrl,
-      readyState: xhr.readyState,
-      responseHeaders: xhr.getAllResponseHeaders(),
-      status: xhr.status,
-      statusText: xhr.statusText,
-    };
-    try {
-      data.responseText = xhr.responseText;
-    } catch (e) {
-      // ignore if responseText is unreachable
-    }
-    if (evt.type === 'loadend') clearRequest(req);
-    lastPromise = lastPromise.then(function () {
-      return new Promise(function (resolve, _reject) {
-        if (xhr.response && xhr.responseType === 'blob') {
-          var reader = new FileReader;
-          reader.onload = function (_e) {
-            data.response = this.result;
-            resolve();
-          };
-          reader.readAsDataURL(xhr.response);
-        } else {
-          // default `null` for blob and '' for text
-          data.response = xhr.response;
-          resolve();
-        }
-      });
-    }).then(function () {
-      req.cb && req.cb(res);
-    });
-  };
-}
-
-function httpRequest(details, cb) {
-  var req = requests[details.id];
-  if (!req || req.cb) return;
-  req.cb = cb;
-  var xhr = req.xhr;
-  try {
-    xhr.open(details.method, details.url, true, details.user, details.password);
-    xhr.setRequestHeader('VM-Verify', details.id);
-    details.headers && Object.keys(details.headers).forEach(function (key) {
-      xhr.setRequestHeader(
-        ~special_headers.indexOf(key.toLowerCase()) ? 'VM-' + key : key,
-        details.headers[key]
-      );
-    });
-    if (details.responseType) xhr.responseType = 'blob';
-    if (details.overrideMimeType) xhr.overrideMimeType(details.overrideMimeType);
-    var callback = xhrCallbackWrapper(req);
-    [
-      'abort',
-      'error',
-      'load',
-      'loadend',
-      'progress',
-      'readystatechange',
-      'timeout',
-    ].forEach(function (evt) {
-      xhr['on' + evt] = callback;
-    });
-    req.finalUrl = details.url;
-    xhr.send(details.data);
-  } catch (e) {
-    console.warn(e);
-  }
-}
-
-function clearRequest(req) {
-  if (req.coreId) delete verify[req.coreId];
-  delete requests[req.id];
-}
-
-function abortRequest(id) {
-  var req = requests[id];
-  if (req) {
-    req.xhr.abort();
-    clearRequest(req);
-  }
-}
-
-// Watch URL redirects
-browser.webRequest.onBeforeRedirect.addListener(function (details) {
-  var reqId = verify[details.requestId];
-  if (reqId) {
-    var req = requests[reqId];
-    if (req) req.finalUrl = details.redirectUrl;
-  }
-}, {
-  urls: ['<all_urls>'],
-  types: ['xmlhttprequest'],
-});
-
-// Modifications on headers
-browser.webRequest.onBeforeSendHeaders.addListener(function (details) {
-  var headers = details.requestHeaders;
-  var newHeaders = [];
-  var vmHeaders = {};
-  headers.forEach(function (header) {
-    // if (header.name === 'VM-Task') {
-    //   tasks[details.requestId] = header.value;
-    // } else
-    if (header.name.slice(0, 3) === 'VM-') {
-      vmHeaders[header.name.slice(3)] = header.value;
-    } else {
-      newHeaders.push(header);
-    }
-  });
-  var reqId = vmHeaders['Verify'];
-  if (reqId) {
-    var req = requests[reqId];
-    if (req) {
-      delete vmHeaders['Verify'];
-      verify[details.requestId] = reqId;
-      req.coreId = details.requestId;
-      Object.keys(vmHeaders).forEach(function (key) {
-        ~special_headers.indexOf(key.toLowerCase())
-        && newHeaders.push({name: key, value: vmHeaders[key]});
-      });
-    }
-  }
-  return {requestHeaders: newHeaders};
-}, {
-  urls: ['<all_urls>'],
-  types: ['xmlhttprequest'],
-}, ['blocking', 'requestHeaders']);
-
-// tasks are not necessary now, turned off
-// Stop redirects
-// browser.webRequest.onHeadersReceived.addListener(function (details) {
-//   var task = tasks[details.requestId];
-//   if (task) {
-//     delete tasks[details.requestId];
-//     if (task === 'Get-Location' && _.includes([301, 302, 303], details.statusCode)) {
-//       var locationHeader = details.responseHeaders.find(function (header) {
-//         return header.name.toLowerCase() === 'location';
-//       });
-//       return {
-//         redirectUrl: 'data:text/plain;charset=utf-8,' + (locationHeader && locationHeader.value || ''),
-//       };
-//     }
-//   }
-// }, {
-//   urls: ['<all_urls>'],
-//   types: ['xmlhttprequest'],
-// }, ['blocking', 'responseHeaders']);
-// browser.webRequest.onCompleted.addListener(function (details) {
-//   delete tasks[details.requestId];
-// }, {
-//   urls: ['<all_urls>'],
-//   types: ['xmlhttprequest'],
-// });
-// browser.webRequest.onErrorOccurred.addListener(function (details) {
-//   delete tasks[details.requestId];
-// }, {
-//   urls: ['<all_urls>'],
-//   types: ['xmlhttprequest'],
-// });
-
-browser.webRequest.onBeforeRequest.addListener(function (req) {
-  // onBeforeRequest is fired for local files too
-  if (req.method === 'GET' && /\.user\.js([\?#]|$)/.test(req.url)) {
-    // {cancel: true} will redirect to a blocked view
-    var noredirect = {redirectUrl: 'javascript:history.back()'};
-    var x = new XMLHttpRequest();
-    x.open('GET', req.url, false);
-    try {
-      x.send();
-    } catch (e) {
-      // Request is redirected
-      return;
-    }
-    if ((!x.status || x.status == 200) && !/^\s*</.test(x.responseText)) {
-      cache.set(req.url, x.responseText);
-      // Firefox: slashes are decoded automatically by Firefox, thus cannot be
-      // used as separators
-      var url = browser.runtime.getURL('/options/index.html') + '#confirm?u=' + encodeURIComponent(req.url);
-      if (req.tabId < 0) browser.tabs.create({url: url});
-      else browser.tabs.get(req.tabId).then(function (tab) {
-        browser.tabs.create({url: url + '&f=' + encodeURIComponent(tab.url)});
-      });
-      return noredirect;
-    }
-  }
-}, {
-  urls: ['<all_urls>'],
-  types: ['main_frame'],
-}, ['blocking']);
-
-module.exports = {
-  getRequestId: getRequestId,
-  abortRequest: abortRequest,
-  httpRequest: httpRequest,
-};

src/background/sync/base.js

@@ -1,108 +1,101 @@
-var _ = require('src/common');
-var events = require('../utils/events');
-var app = require('../app');
-var options = require('../options');
+import { debounce, normalizeKeys, noop } from 'src/common';
+import getEventEmitter from '../utils/events';
+import { getOption, setOption, hookOptions } from '../utils/options';
+import { getScriptsByIndex, parseScript, saveScript, removeScript } from '../utils/db';
 
-var serviceNames = [];
-var services = {};
-var autoSync = _.debounce(function () {
-  sync();
-}, 60 * 60 * 1000);
-var working = Promise.resolve();
-var syncConfig = initConfig();
+const serviceNames = [];
+const services = {};
+const autoSync = debounce(sync, 60 * 60 * 1000);
+let working = Promise.resolve();
+const syncConfig = initConfig();
 
-function getFilename(uri) {
-  return 'vm-' + encodeURIComponent(uri);
+export function getFilename(uri) {
+  return `vm-${encodeURIComponent(uri)}`;
 }
-function isScriptFile(name) {
+export function isScriptFile(name) {
   return /^vm-/.test(name);
 }
-function getURI(name) {
+export function getURI(name) {
   return decodeURIComponent(name.slice(3));
 }
 
 function initConfig() {
   function get(key, def) {
-    var keys = _.normalizeKeys(key);
+    const keys = normalizeKeys(key);
     keys.unshift('sync');
-    return options.get(keys, def);
+    return getOption(keys, def);
   }
   function set(key, value) {
-    var keys = _.normalizeKeys(key);
+    const keys = normalizeKeys(key);
     keys.unshift('sync');
-    options.set(keys, value);
+    setOption(keys, value);
   }
   function init() {
-    var sync = options.get('sync');
-    if (!sync || !sync.services) {
-      sync = {
+    let config = getOption('sync');
+    if (!config || !config.services) {
+      config = {
         services: {},
       };
 
       // XXX Migrate from old data
       ['dropbox', 'onedrive']
-      .forEach(function (key) {
-        sync.services[key] = options.get(key);
+      .forEach(key => {
+        config.services[key] = getOption(key);
       });
 
-      set([], sync);
+      set([], config);
     }
   }
   init();
-  return {get: get, set: set};
+  return { get, set };
 }
-
-function ServiceConfig(name) {
-  this.name = name;
-}
-ServiceConfig.prototype.normalizeKeys = function (key) {
-  var keys = _.normalizeKeys(key);
-  keys.unshift('services', this.name);
-  return keys;
-};
-ServiceConfig.prototype.get = function (key, def) {
-  var keys = this.normalizeKeys(key);
-  return syncConfig.get(keys, def);
-};
-ServiceConfig.prototype.set = function (key, val) {
-  var _this = this;
-  if (typeof key === 'object') {
-    var data = key;
-    Object.keys(data).forEach(function (key) {
-      var keys = _this.normalizeKeys(key);
-      syncConfig.set(keys, data[key]);
-    });
-  } else {
-    var keys = _this.normalizeKeys(key);
-    syncConfig.set(keys, val);
+function serviceConfig(name) {
+  function getKeys(key) {
+    const keys = normalizeKeys(key);
+    keys.unshift('services', name);
+    return keys;
   }
-};
-ServiceConfig.prototype.clear = function () {
-  syncConfig.set(this.normalizeKeys(), {});
-};
-
+  function get(key, def) {
+    return syncConfig.get(getKeys(key), def);
+  }
+  function set(key, val) {
+    if (typeof key === 'object') {
+      const data = key;
+      Object.keys(data).forEach(k => {
+        syncConfig.set(getKeys(k), data[k]);
+      });
+    } else {
+      syncConfig.set(getKeys(key), val);
+    }
+  }
+  function clear() {
+    syncConfig.set(getKeys(), {});
+  }
+  return { get, set, clear };
+}
 function serviceState(validStates, initialState, onChange) {
-  var state = initialState || validStates[0];
-  return {
-    get: function () {return state;},
-    set: function (_state) {
-      if (~validStates.indexOf(_state)) {
-        state = _state;
-        onChange && onChange();
-      } else {
-        console.warn('Invalid state:', _state);
-      }
-      return state;
-    },
-    is: function (states) {
-      if (!Array.isArray(states)) states = [states];
-      return ~states.indexOf(state);
-    },
-  };
+  let state = initialState || validStates[0];
+  function get() {
+    return state;
+  }
+  function set(newState) {
+    if (validStates.includes(newState)) {
+      state = newState;
+      if (onChange) onChange();
+    } else {
+      console.warn('Invalid state:', newState);
+    }
+    return get();
+  }
+  function is(states) {
+    const stateArray = Array.isArray(states) ? states : [states];
+    return stateArray.includes(state);
+  }
+  return { get, set, is };
 }
-function getStates() {
-  return serviceNames.map(function (name) {
-    var service = services[name];
+export function getStates() {
+  return serviceNames.map(name => {
+    const service = services[name];
     return {
       name: service.name,
       displayName: service.displayName,
@@ -114,257 +107,224 @@ function getStates() {
   });
 }
 
-function serviceFactory(base, options) {
-  var Service = function () {
-    this.initialize.apply(this, arguments);
+function serviceFactory(base) {
+  const initService = (...args) => {
+    const service = Object.create(base);
+    service.initialize(...args);
+    return service;
   };
-  Service.prototype = Object.assign(Object.create(base), options);
-  Service.extend = extendService;
-  return Service;
-}
-function extendService(options) {
-  return serviceFactory(this.prototype, options);
+  initService.extend = options => serviceFactory(Object.assign(Object.create(base), options));
+  return initService;
 }
-var BaseService = serviceFactory({
+export const BaseService = serviceFactory({
   name: 'base',
   displayName: 'BaseService',
   delayTime: 1000,
   urlPrefix: '',
   metaFile: 'Violentmonkey',
-  delay: function (time) {
-    if (time == null) time = this.delayTime;
-    return new Promise(function (resolve, _reject) {
-      setTimeout(resolve, time);
+  delay(time) {
+    return new Promise(resolve => {
+      setTimeout(resolve, time == null ? this.delayTime : time);
     });
   },
-  initialize: function (name) {
-    var _this = this;
-    _this.onStateChange = _.debounce(_this.onStateChange.bind(_this));
-    if (name) _this.name = name;
-    _this.progress = {
+  initialize(name) {
+    this.onStateChange = debounce(this.onStateChange.bind(this));
+    if (name) this.name = name;
+    this.progress = {
       finished: 0,
       total: 0,
     };
-    _this.config = new ServiceConfig(_this.name);
-    _this.authState = serviceState([
+    this.config = serviceConfig(this.name);
+    this.authState = serviceState([
       'idle',
       'initializing',
       'authorizing',  // in case some services require asynchronous requests to get access_tokens
       'authorized',
       'unauthorized',
       'error',
-    ], null, _this.onStateChange);
-    _this.syncState = serviceState([
+    ], null, this.onStateChange);
+    this.syncState = serviceState([
       'idle',
       'ready',
       'syncing',
       'error',
-    ], null, _this.onStateChange);
-    // _this.initToken();
-    _this.events = events.getEventEmitter();
-    _this.lastFetch = Promise.resolve();
-    _this.startSync = _this.syncFactory();
-  },
-  on: function () {
-    return this.events.on.apply(null, arguments);
-  },
-  off: function () {
-    return this.events.off.apply(null, arguments);
-  },
-  fire: function () {
-    return this.events.fire.apply(null, arguments);
+    ], null, this.onStateChange);
+    // this.initToken();
+    this.lastFetch = Promise.resolve();
+    this.startSync = this.syncFactory();
+    const events = getEventEmitter();
+    ['on', 'off', 'fire']
+    .forEach(key => {
+      this[key] = (...args) => { events[key](...args); };
+    });
   },
-  onStateChange: function () {
+  onStateChange() {
     browser.runtime.sendMessage({
       cmd: 'UpdateSync',
       data: getStates(),
     });
   },
-  log: function () {
-    console.log.apply(console, arguments);  // eslint-disable-line no-console
+  log(...args) {
+    console.log(...args);  // eslint-disable-line no-console
   },
-  syncFactory: function () {
-    var _this = this;
-    var promise, debouncedResolve;
-    function shouldSync() {
-      return _this.authState.is('authorized') && getCurrent() === _this.name;
-    }
-    function init() {
+  syncFactory() {
+    let promise;
+    let debouncedResolve;
+    const shouldSync = () => this.authState.is('authorized') && getCurrent() === this.name;
+    const getReady = () => {
       if (!shouldSync()) return Promise.resolve();
-      _this.log('Ready to sync:', _this.displayName);
-      _this.syncState.set('ready');
-      promise = working = working.then(function () {
-        return new Promise(function (resolve, _reject) {
-          debouncedResolve = _.debounce(resolve, 10 * 1000);
-          debouncedResolve();
-        });
-      })
-      .then(function () {
-        if (shouldSync()) {
-          return _this.sync();
-        }
-        _this.syncState.set('idle');
-      })
-      .catch(function (err) {
-        console.error(err);
+      this.log('Ready to sync:', this.displayName);
+      this.syncState.set('ready');
+      working = working.then(() => new Promise(resolve => {
+        debouncedResolve = debounce(resolve, 10 * 1000);
+        debouncedResolve();
+      }))
+      .then(() => {
+        if (shouldSync()) return this.sync();
+        this.syncState.set('idle');
       })
-      .then(function () {
-        promise = debouncedResolve = null;
+      .catch(err => { console.error(err); })
+      .then(() => {
+        promise = null;
+        debouncedResolve = null;
       });
-    }
-    return function () {
-      if (!promise) init();
-      debouncedResolve && debouncedResolve();
-      return promise;
+      promise = working;
     };
+    function startSync() {
+      if (!promise) getReady();
+      if (debouncedResolve) debouncedResolve();
+      return promise;
+    }
+    return startSync;
   },
-  prepareHeaders: function () {
+  prepareHeaders() {
     this.headers = {};
   },
-  prepare: function () {
-    var _this = this;
-    _this.authState.set('initializing');
-    return (_this.initToken() ? Promise.resolve(_this.user()) : Promise.reject({
+  prepare() {
+    this.authState.set('initializing');
+    return (this.initToken() ? Promise.resolve(this.user()) : Promise.reject({
       type: 'unauthorized',
     }))
-    .then(function () {
-      _this.authState.set('authorized');
-    }, function (err) {
-      if (err.type === 'unauthorized') {
+    .then(() => {
+      this.authState.set('authorized');
+    }, err => {
+      if (err && err.type === 'unauthorized') {
         // _this.config.clear();
-        _this.authState.set('unauthorized');
+        this.authState.set('unauthorized');
       } else {
         console.error(err);
-        _this.authState.set('error');
+        this.authState.set('error');
       }
-      _this.syncState.set('idle');
+      this.syncState.set('idle');
       throw err;
     });
   },
-  checkSync: function () {
-    var _this = this;
-    return _this.prepare()
-    .then(function () {
-      return _this.startSync();
-    });
+  checkSync() {
+    return this.prepare()
+    .then(() => this.startSync());
   },
-  user: _.noop,
-  getMeta: function () {
-    var _this = this;
-    return _this.get(_this.metaFile)
-    .then(function (data) {
-      return JSON.parse(data);
-    });
+  user: noop,
+  getMeta() {
+    return this.get(this.metaFile)
+    .then(data => JSON.parse(data));
   },
-  initToken: function () {
-    var _this = this;
-    _this.prepareHeaders();
-    var token = _this.config.get('token');
-    if (token) {
-      _this.headers.Authorization = 'Bearer ' + token;
-      return true;
-    }
+  initToken() {
+    this.prepareHeaders();
+    const token = this.config.get('token');
+    this.headers.Authorization = token ? `Bearer ${token}` : null;
+    return !!token;
   },
-  request: function (options) {
-    var _this = this;
-    var progress = _this.progress;
-    var lastFetch;
+  request(options) {
+    const { progress } = this;
+    let lastFetch;
     if (options.noDelay) {
       lastFetch = Promise.resolve();
     } else {
-      lastFetch = _this.lastFetch;
-      _this.lastFetch = lastFetch.then(function () {
-        return _this.delay();
-      });
+      lastFetch = this.lastFetch;
+      this.lastFetch = lastFetch.then(() => this.delay());
     }
-    progress.total ++;
-    _this.onStateChange();
-    return lastFetch.then(function () {
-      return new Promise(function (resolve, reject) {
-        var xhr = new XMLHttpRequest;
-        var prefix = options.prefix;
-        if (prefix == null) prefix = _this.urlPrefix;
-        xhr.open(options.method || 'GET', prefix + options.url, true);
-        var headers = Object.assign({}, _this.headers, options.headers);
-        if (options.body && typeof options.body === 'object') {
-          headers['Content-Type'] = 'application/json';
-          options.body = JSON.stringify(options.body);
-        }
-        Object.keys(headers).forEach(function (key) {
-          var v = headers[key];
-          v && xhr.setRequestHeader(key, v);
-        });
-        xhr.onloadend = function () {
-          progress.finished ++;
-          var data = xhr.responseText;
-          if (options.responseType === 'json') {
-            try {
-              data = JSON.parse(data);
-            } catch (e) {
-              // Invalid JSON data
-            }
-          }
-          _this.onStateChange();
-          if (xhr.status === 503) {
-            // TODO Too Many Requests
-          }
-          // net error: xhr.status === 0
-          if (xhr.status >= 200 && xhr.status < 300) {
-            resolve(data);
-          } else {
-            requestError(data);
+    progress.total += 1;
+    this.onStateChange();
+    return lastFetch.then(() => new Promise((resolve, reject) => {
+      const xhr = new XMLHttpRequest();
+      let { prefix } = options;
+      if (prefix == null) prefix = this.urlPrefix;
+      xhr.open(options.method || 'GET', prefix + options.url, true);
+      const headers = Object.assign({}, this.headers, options.headers);
+      if (options.body && typeof options.body === 'object') {
+        headers['Content-Type'] = 'application/json';
+        options.body = JSON.stringify(options.body);
+      }
+      Object.keys(headers).forEach(key => {
+        const value = headers[key];
+        if (value) xhr.setRequestHeader(key, value);
+      });
+      xhr.onloadend = () => {
+        progress.finished += 1;
+        let data = xhr.responseText;
+        if (options.responseType === 'json') {
+          try {
+            data = JSON.parse(data);
+          } catch (e) {
+            // Invalid JSON data
           }
-        };
-        xhr.send(options.body);
-
-        function requestError(data) {
-          reject({
-            url: options.url,
-            status: xhr.status,
-            xhr: xhr,
-            data: data,
-          });
         }
-      });
-    });
+        this.onStateChange();
+        // TODO Too Many Requests
+        // if (xhr.status === 503) {
+        // }
+        // net error: xhr.status === 0
+        if (xhr.status >= 200 && xhr.status < 300) {
+          resolve(data);
+        } else {
+          requestError(data);
+        }
+      };
+      xhr.send(options.body);
+
+      function requestError(data) {
+        reject({
+          xhr,
+          data,
+          url: options.url,
+          status: xhr.status,
+        });
+      }
+    }));
   },
-  sync: function () {
-    var _this = this;
-    _this.progress = {
+  sync() {
+    this.progress = {
       finished: 0,
       total: 0,
     };
-    _this.syncState.set('syncing');
-    return _this.getMeta()
-    .then(function (meta) {
-      return Promise.all([
+    this.syncState.set('syncing');
+    return this.getMeta()
+    .then(meta => Promise.all([
+      meta,
+      this.list(),
+      getScriptsByIndex('position'),
+    ]))
+    .then(([meta, remoteData, localData]) => {
+      const remote = {
         meta,
-        _this.list(),
-        app.vmdb.getScriptsByIndex('position'),
-      ]);
-    }).then(function (res) {
-      var remote = {
-        meta: res[0],
-        data: res[1],
+        data: remoteData,
       };
-      var local = {
-        meta: _this.config.get('meta', {}),
-        data: res[2],
+      const local = {
+        meta: this.config.get('meta', {}),
+        data: localData,
       };
-      var firstSync = !local.meta.timestamp;
-      var outdated = !local.meta.timestamp || remote.meta.timestamp > local.meta.timestamp;
-      _this.log('First sync:', firstSync);
-      _this.log('Outdated:', outdated, '(', 'local:', local.meta.timestamp, 'remote:', remote.meta.timestamp, ')');
-      var map = {};
-      var getRemote = [];
-      var putRemote = [];
-      var delRemote = [];
-      var delLocal = [];
-      remote.data.forEach(function (item) {
-        map[item.uri] = item;
-      });
-      local.data.forEach(function (item) {
-        var remoteItem = map[item.uri];
+      const firstSync = !local.meta.timestamp;
+      const outdated = !local.meta.timestamp || remote.meta.timestamp > local.meta.timestamp;
+      this.log('First sync:', firstSync);
+      this.log('Outdated:', outdated, '(', 'local:', local.meta.timestamp, 'remote:', remote.meta.timestamp, ')');
+      const map = {};
+      const getRemote = [];
+      const putRemote = [];
+      const delRemote = [];
+      const delLocal = [];
+      remote.data.forEach(item => { map[item.uri] = item; });
+      local.data.forEach(item => {
+        const remoteItem = map[item.uri];
         if (remoteItem) {
           if (firstSync || !item.custom.modified || remoteItem.modified > item.custom.modified) {
             getRemote.push(remoteItem);
@@ -378,21 +338,22 @@ var BaseService = serviceFactory({
           delLocal.push(item);
         }
       });
-      Object.keys(map).forEach(function (uri) {
-        var item = map[uri];
+      Object.keys(map).forEach(uri => {
+        const item = map[uri];
         if (outdated) {
           getRemote.push(item);
         } else {
           delRemote.push(item);
         }
       });
-      var promises = [].concat(
-        getRemote.map(function (item) {
-          _this.log('Download script:', item.uri);
-          return _this.get(getFilename(item.uri)).then(function (raw) {
-            var data = {};
+      const promiseQueue = [].concat(
+        getRemote.map(item => {
+          this.log('Download script:', item.uri);
+          return this.get(getFilename(item.uri))
+          .then(raw => {
+            const data = {};
             try {
-              var obj = JSON.parse(raw);
+              const obj = JSON.parse(raw);
               if (obj.version === 1) {
                 data.code = obj.code;
                 data.more = obj.more;
@@ -401,18 +362,16 @@ var BaseService = serviceFactory({
               data.code = raw;
             }
             data.modified = item.modified;
-            if (!options.get('syncScriptStatus') && data.more) {
+            if (!getOption('syncScriptStatus') && data.more) {
               delete data.more.enabled;
             }
-            return app.vmdb.parseScript(data)
-            .then(function (res) {
-              browser.runtime.sendMessage(res);
-            });
+            return parseScript(data)
+            .then(res => { browser.runtime.sendMessage(res); });
           });
         }),
-        putRemote.map(function (item) {
-          _this.log('Upload script:', item.uri);
-          var data = JSON.stringify({
+        putRemote.map(item => {
+          this.log('Upload script:', item.uri);
+          const data = JSON.stringify({
             version: 1,
             code: item.code,
             more: {
@@ -421,76 +380,73 @@ var BaseService = serviceFactory({
               update: item.update,
             },
           });
-          return _this.put(getFilename(item.uri), data)
-          .then(function (data) {
-            if (item.custom.modified !== data.modified) {
-              item.custom.modified = data.modified;
-              return app.vmdb.saveScript(item);
+          return this.put(getFilename(item.uri), data)
+          .then(res => {
+            if (item.custom.modified !== res.modified) {
+              item.custom.modified = res.modified;
+              return saveScript(item);
             }
           });
         }),
-        delRemote.map(function (item) {
-          _this.log('Remove remote script:', item.uri);
-          return _this.remove(getFilename(item.uri));
+        delRemote.map(item => {
+          this.log('Remove remote script:', item.uri);
+          return this.remove(getFilename(item.uri));
+        }),
+        delLocal.map(item => {
+          this.log('Remove local script:', item.uri);
+          return removeScript(item.id);
         }),
-        delLocal.map(function (item) {
-          _this.log('Remove local script:', item.uri);
-          return app.vmdb.removeScript(item.id);
-        })
       );
-      promises.push(Promise.all(promises).then(function () {
-        var promises = [];
-        var remoteChanged;
+      promiseQueue.push(Promise.all(promiseQueue).then(() => {
+        const promises = [];
+        let remoteChanged;
         if (!remote.meta.timestamp || putRemote.length || delRemote.length) {
           remoteChanged = true;
           remote.meta.timestamp = Date.now();
-          promises.push(_this.put(_this.metaFile, JSON.stringify(remote.meta)));
+          promises.push(this.put(this.metaFile, JSON.stringify(remote.meta)));
         }
-        if (!local.meta.timestamp || getRemote.length || delLocal.length || remoteChanged || outdated) {
+        if (
+          !local.meta.timestamp
+          || getRemote.length
+          || delLocal.length
+          || remoteChanged
+          || outdated
+        ) {
           local.meta.timestamp = remote.meta.timestamp;
         }
         local.meta.lastSync = Date.now();
-        _this.config.set('meta', local.meta);
+        this.config.set('meta', local.meta);
         return Promise.all(promises);
       }));
-      return Promise.all(promises.map(function (promise) {
-        // ignore errors to ensure all promises are fulfilled
-        return promise.then(_.noop, function (err) {
-          return err || true;
-        });
-      }))
-      .then(function (errors) {
-        errors = errors.filter(function (err) {return err;});
-        if (errors.length) throw errors;
-      });
+      // ignore errors to ensure all promises are fulfilled
+      return Promise.all(promiseQueue.map(promise => promise.catch(err => err || true)))
+      .then(errors => errors.filter(Boolean))
+      .then(errors => { if (errors.length) throw errors; });
     })
-    .then(function () {
-      _this.syncState.set('idle');
-    }, function (err) {
-      _this.syncState.set('error');
-      _this.log('Failed syncing:', _this.name);
-      _this.log(err);
+    .then(() => {
+      this.syncState.set('idle');
+    }, err => {
+      this.syncState.set('error');
+      this.log('Failed syncing:', this.name);
+      this.log(err);
     });
   },
 });
 
-function register(Service) {
-  var name = Service.prototype.name || Service.name;
-  var service = new Service(name);
-  serviceNames.push(name);
-  services[name] = service;
+export function register(service) {
+  serviceNames.push(service.name);
+  services[service.name] = service;
   return service;
 }
 function getCurrent() {
   return syncConfig.get('current');
 }
 function getService(name) {
-  name = name || getCurrent();
-  return services[name];
+  return services[name || getCurrent()];
 }
-function initialize() {
-  var service = getService();
-  service && service.checkSync();
+export function initialize() {
+  const service = getService();
+  if (service) service.checkSync();
 }
 
 function syncOne(service) {
@@ -498,42 +454,27 @@ function syncOne(service) {
   if (service.authState.is(['idle', 'error'])) return service.checkSync();
   if (service.authState.is('authorized')) return service.startSync();
 }
-function sync() {
-  var service = getService();
+export function sync() {
+  const service = getService();
   return service && Promise.resolve(syncOne(service)).then(autoSync);
 }
 
-function checkAuthUrl(url) {
-  return serviceNames.some(function (name) {
-    var service = services[name];
+export function checkAuthUrl(url) {
+  return serviceNames.some(name => {
+    const service = services[name];
     return service.checkAuth && service.checkAuth(url);
   });
 }
 
-function authorize() {
-  var service = getService();
-  service && service.authorize();
+export function authorize() {
+  const service = getService();
+  if (service) service.authorize();
 }
-function revoke() {
-  var service = getService();
-  service && service.revoke();
+export function revoke() {
+  const service = getService();
+  if (service) service.revoke();
 }
 
-options.hook(function (data) {
-  ('sync.current' in data) && initialize();
+hookOptions(data => {
+  if ('sync.current' in data) initialize();
 });
-
-exports.utils = {
-  getFilename: getFilename,
-  isScriptFile: isScriptFile,
-  getURI: getURI,
-};
-exports.initialize = initialize;
-exports.sync = sync;
-exports.getStates = getStates;
-exports.checkAuthUrl = checkAuthUrl;
-exports.BaseService = BaseService;
-exports.register = register;
-exports.service = getService;
-exports.authorize = authorize;
-exports.revoke = revoke;

src/background/sync/dropbox.js

@@ -1,83 +1,40 @@
-var base = require('./base');
-var searchUtils = require('../utils/search');
-var config = {
+import { loadQuery, dumpQuery } from '../utils/search';
+import { getURI, BaseService, isScriptFile, register } from './base';
+
+const config = {
   client_id: 'f0q12zup2uys5w8',
   redirect_uri: 'https://violentmonkey.github.io/auth_dropbox.html',
 };
 
-function authorize() {
-  var params = {
-    response_type: 'token',
-    client_id: config.client_id,
-    redirect_uri: config.redirect_uri,
-  };
-  var url = 'https://www.dropbox.com/oauth2/authorize';
-  var qs = searchUtils.dump(params);
-  url += '?' + qs;
-  browser.tabs.create({url: url});
-}
-function checkAuth(url) {
-  var redirect_uri = config.redirect_uri + '#';
-  if (url.startsWith(redirect_uri)) {
-    authorized(url.slice(redirect_uri.length));
-    dropbox.checkSync();
-    return true;
-  }
-}
-function authorized(raw) {
-  var data = searchUtils.load(raw);
-  if (data.access_token) {
-    dropbox.config.set({
-      uid: data.uid,
-      token: data.access_token,
-    });
-  }
-}
-function revoke() {
-  dropbox.config.set({
-    uid: null,
-    token: null,
-  });
-}
-function normalize(item) {
-  return {
-    size: item.size,
-    uri: base.utils.getURI(item.name),
-    modified: new Date(item.server_modified).getTime(),
-    // is_deleted: item.is_deleted,
-  };
-}
-
-var Dropbox = base.BaseService.extend({
+const Dropbox = BaseService.extend({
   name: 'dropbox',
   displayName: 'Dropbox',
-  user: function () {
+  user() {
     return this.request({
       method: 'POST',
       url: 'https://api.dropboxapi.com/2/users/get_current_account',
     })
-    .catch(function (err) {
+    .catch(err => {
       if (err.status === 401) {
-        throw {
+        return Promise.reject({
           type: 'unauthorized',
-        };
+        });
       }
-      throw {
+      return Promise.reject({
         type: 'error',
         data: err,
-      };
+      });
     });
   },
-  getMeta: function () {
-    return base.BaseService.prototype.getMeta.call(this)
-    .catch(function (res) {
+  getMeta() {
+    return BaseService.getMeta.call(this)
+    .catch(res => {
       if (res.status === 409) return {};
       throw res;
     });
   },
-  list: function () {
-    var _this = this;
-    return _this.request({
+  list() {
+    return this.request({
       method: 'POST',
       url: 'https://api.dropboxapi.com/2/files/list_folder',
       body: {
@@ -85,30 +42,28 @@ var Dropbox = base.BaseService.extend({
       },
       responseType: 'json',
     })
-    .then(function (data) {
-      return data.entries.filter(function (item) {
-        return item['.tag'] === 'file' && base.utils.isScriptFile(item.name);
-      }).map(normalize);
-    });
+    .then(data => (
+      data.entries.filter(item => item['.tag'] === 'file' && isScriptFile(item.name)).map(normalize)
+    ));
   },
-  get: function (path) {
+  get(path) {
     return this.request({
       method: 'POST',
       url: 'https://content.dropboxapi.com/2/files/download',
       headers: {
         'Dropbox-API-Arg': JSON.stringify({
-          path: '/' + path,
+          path: `/${path}`,
         }),
       },
     });
   },
-  put: function (path, data) {
+  put(path, data) {
     return this.request({
       method: 'POST',
       url: 'https://content.dropboxapi.com/2/files/upload',
       headers: {
         'Dropbox-API-Arg': JSON.stringify({
-          path: '/' + path,
+          path: `/${path}`,
           mode: 'overwrite',
         }),
         'Content-Type': 'application/octet-stream',
@@ -118,22 +73,58 @@ var Dropbox = base.BaseService.extend({
     })
     .then(normalize);
   },
-  remove: function (path) {
+  remove(path) {
     return this.request({
       method: 'POST',
       url: 'https://api.dropboxapi.com/2/files/delete',
       body: {
-        path: '/' + path,
+        path: `/${path}`,
       },
       responseType: 'json',
     })
     .then(normalize);
   },
-  authorize: authorize,
-  checkAuth: checkAuth,
-  revoke: function () {
-    revoke();
+  authorize() {
+    const params = {
+      response_type: 'token',
+      client_id: config.client_id,
+      redirect_uri: config.redirect_uri,
+    };
+    const url = `https://www.dropbox.com/oauth2/authorize?${dumpQuery(params)}`;
+    browser.tabs.create({ url });
+  },
+  authorized(raw) {
+    const data = loadQuery(raw);
+    if (data.access_token) {
+      this.config.set({
+        uid: data.uid,
+        token: data.access_token,
+      });
+    }
+  },
+  checkAuth(url) {
+    const redirectUri = `${config.redirect_uri}#`;
+    if (url.startsWith(redirectUri)) {
+      this.authorized(url.slice(redirectUri.length));
+      this.checkSync();
+      return true;
+    }
+  },
+  revoke() {
+    this.config.set({
+      uid: null,
+      token: null,
+    });
     return this.prepare();
   },
 });
-var dropbox = base.register(Dropbox);
+register(Dropbox);
+
+function normalize(item) {
+  return {
+    size: item.size,
+    uri: getURI(item.name),
+    modified: new Date(item.server_modified).getTime(),
+    // isDeleted: item.is_deleted,
+  };
+}

src/background/sync/index.js

@@ -1,18 +1,19 @@
-var base = require('./base');
+import {
+  checkAuthUrl, initialize, sync, getStates, authorize, revoke,
+} from './base';
 
-browser.tabs.onUpdated.addListener(function (tabId, changes) {
-  changes.url && base.checkAuthUrl(changes.url) && browser.tabs.remove(tabId);
+browser.tabs.onUpdated.addListener((tabId, changes) => {
+  if (changes.url && checkAuthUrl(changes.url)) browser.tabs.remove(tabId);
 });
 
 // import sync modules
 require('./dropbox');
 require('./onedrive');
 
-module.exports = {
-  initialize: base.initialize,
-  sync: base.sync,
-  states: base.getStates,
-  service: base.getService,
-  authorize: base.authorize,
-  revoke: base.revoke,
+export {
+  initialize,
+  sync,
+  getStates,
+  authorize,
+  revoke,
 };

src/background/sync/onedrive.js

@@ -1,182 +1,92 @@
 // Reference: https://dev.onedrive.com/README.htm
+import { object, noop } from 'src/common';
+import { dumpQuery } from '../utils/search';
+import { BaseService, isScriptFile, register, getURI } from './base';
 
-var _ = require('src/common');
-var base = require('./base');
-var searchUtils = require('../utils/search');
-
-var config = Object.assign({
+const config = Object.assign({
   client_id: '000000004418358A',
   redirect_uri: 'https://violentmonkey.github.io/auth_onedrive.html',
 }, JSON.parse(
   // assume this is secret
-  window.atob('eyJjbGllbnRfc2VjcmV0Ijoiajl4M09WRXRIdmhpSEtEV09HcXV5TWZaS2s5NjA0MEgifQ==')
+  window.atob('eyJjbGllbnRfc2VjcmV0Ijoiajl4M09WRXRIdmhpSEtEV09HcXV5TWZaS2s5NjA0MEgifQ=='),
 ));
 
-function authorize() {
-  var params = {
-    client_id: config.client_id,
-    scope: 'onedrive.appfolder wl.offline_access',
-    response_type: 'code',
-    redirect_uri: config.redirect_uri,
-  };
-  var url = 'https://login.live.com/oauth20_authorize.srf';
-  var qs = searchUtils.dump(params);
-  url += '?' + qs;
-  browser.tabs.create({url: url});
-}
-function checkAuth(url) {
-  var redirect_uri = config.redirect_uri + '?code=';
-  if (url.startsWith(redirect_uri)) {
-    onedrive.authState.set('authorizing');
-    authorized({
-      code: url.slice(redirect_uri.length),
-    }).then(function () {
-      onedrive.checkSync();
-    });
-    return true;
-  }
-}
-function authorized(params) {
-  return onedrive.request({
-    method: 'POST',
-    url: 'https://login.live.com/oauth20_token.srf',
-    prefix: '',
-    headers: {
-      'Content-Type': 'application/x-www-form-urlencoded',
-    },
-    body: searchUtils.dump(Object.assign({}, {
-      client_id: config.client_id,
-      client_secret: config.client_secret,
-      redirect_uri: config.redirect_uri,
-      grant_type: 'authorization_code',
-    }, params)),
-    responseType: 'json',
-  })
-  .then(function (data) {
-    if (data.access_token) {
-      onedrive.config.set({
-        uid: data.user_id,
-        token: data.access_token,
-        refresh_token: data.refresh_token,
-      });
-    } else {
-      throw data;
-    }
-  });
-}
-function revoke() {
-  onedrive.config.set({
-    uid: null,
-    token: null,
-    refresh_token: null,
-  });
-}
-function normalize(item) {
-  return {
-    size: item.size,
-    uri: base.utils.getURI(item.name),
-    modified: new Date(item.lastModifiedDateTime).getTime(),
-  };
-}
-
-var OneDrive = base.BaseService.extend({
+const OneDrive = BaseService.extend({
   name: 'onedrive',
   displayName: 'OneDrive',
   urlPrefix: 'https://api.onedrive.com/v1.0',
-  refreshToken: function () {
-    var _this = this;
-    var refresh_token = _this.config.get('refresh_token');
-    return authorized({
-      refresh_token: refresh_token,
+  refreshToken() {
+    const refreshToken = this.config.get('refresh_token');
+    return this.authorized({
+      refresh_token: refreshToken,
       grant_type: 'refresh_token',
-    }).then(function () {
-      return _this.prepare();
-    });
+    })
+    .then(() => this.prepare());
   },
-  user: function () {
-    function requestUser() {
-      return _this.request({
-        url: '/drive',
-        responseType: 'json',
-      });
-    }
-    var _this = this;
+  user() {
+    const requestUser = () => this.request({
+      url: '/drive',
+      responseType: 'json',
+    });
     return requestUser()
-    .catch(function (res) {
+    .catch(res => {
       if (res.status === 401) {
-        return _this.refreshToken().then(requestUser);
+        return this.refreshToken().then(requestUser);
       }
       throw res;
     })
-    .catch(function (res) {
-      if (res.status === 400 && _.object.get(res, ['data', 'error']) === 'invalid_grant') {
-        throw {
+    .catch(res => {
+      if (res.status === 400 && object.get(res, ['data', 'error']) === 'invalid_grant') {
+        return Promise.reject({
           type: 'unauthorized',
-        };
+        });
       }
-      throw {
+      return Promise.reject({
         type: 'error',
         data: res,
-      };
+      });
     });
   },
-  getMeta: function () {
-    function getMeta() {
-      return base.BaseService.prototype.getMeta.call(_this);
-    }
-    var _this = this;
+  getMeta() {
+    const getMeta = () => BaseService.getMeta.call(this);
     return getMeta()
-    .catch(function (res) {
+    .catch(res => {
       if (res.status === 404) {
-        var header = res.xhr.getResponseHeader('WWW-Authenticate') || '';
+        const header = res.xhr.getResponseHeader('WWW-Authenticate') || '';
         if (/^Bearer realm="OneDriveAPI"/.test(header)) {
-          return _this.refreshToken().then(getMeta);
-        } else {
-          return {};
+          return this.refreshToken().then(getMeta);
         }
+        return {};
       }
       throw res;
     });
   },
-  list: function () {
-    var _this = this;
-    return _this.request({
+  list() {
+    return this.request({
       url: '/drive/special/approot/children',
       responseType: 'json',
     })
-    .then(function (data) {
-      return data.value.filter(function (item) {
-        return item.file && base.utils.isScriptFile(item.name);
-      }).map(normalize);
-    });
+    .then(data => data.value.filter(item => item.file && isScriptFile(item.name)).map(normalize));
   },
-  get: function (path) {
+  get(path) {
     return this.request({
-      url: '/drive/special/approot:/' + encodeURIComponent(path),
+      url: `/drive/special/approot:/${encodeURIComponent(path)}`,
       responseType: 'json',
     })
-    .then(function (data) {
-      var url = data['@content.downloadUrl'];
-      return new Promise(function (resolve, reject) {
-        var xhr = new XMLHttpRequest;
-        xhr.open('GET', url, true);
-        xhr.onload = function () {
-          resolve(xhr.responseText);
-        };
-        xhr.onerror = function () {
-          reject();
-        };
-        xhr.ontimeout = function () {
-          reject();
-        };
-        xhr.send();
-      });
-    });
+    .then(data => new Promise((resolve, reject) => {
+      const url = data['@content.downloadUrl'];
+      const xhr = new XMLHttpRequest();
+      xhr.open('GET', url, true);
+      xhr.onload = () => { resolve(xhr.responseText); };
+      xhr.onerror = () => { reject(); };
+      xhr.ontimeout = () => { reject(); };
+      xhr.send();
+    }));
   },
-  put: function (path, data) {
+  put(path, data) {
     return this.request({
       method: 'PUT',
-      url: '/drive/special/approot:/' + encodeURIComponent(path) + ':/content',
+      url: `/drive/special/approot:/${encodeURIComponent(path)}:/content`,
       headers: {
         'Content-Type': 'application/octet-stream',
       },
@@ -185,18 +95,78 @@ var OneDrive = base.BaseService.extend({
     })
     .then(normalize);
   },
-  remove: function (path) {
+  remove(path) {
     // return 204
     return this.request({
       method: 'DELETE',
-      url: '/drive/special/approot:/' + encodeURIComponent(path),
-    }).catch(_.noop);
+      url: `/drive/special/approot:/${encodeURIComponent(path)}`,
+    })
+    .catch(noop);
   },
-  authorize: authorize,
-  checkAuth: checkAuth,
-  revoke: function () {
-    revoke();
+  authorize() {
+    const params = {
+      client_id: config.client_id,
+      scope: 'onedrive.appfolder wl.offline_access',
+      response_type: 'code',
+      redirect_uri: config.redirect_uri,
+    };
+    const url = `https://login.live.com/oauth20_authorize.srf?${dumpQuery(params)}`;
+    browser.tabs.create({ url });
+  },
+  checkAuth(url) {
+    const redirectUri = `${config.redirect_uri}?code=`;
+    if (url.startsWith(redirectUri)) {
+      this.authState.set('authorizing');
+      this.authorized({
+        code: url.slice(redirectUri.length),
+      })
+      .then(() => this.checkSync());
+      return true;
+    }
+  },
+  revoke() {
+    this.config.set({
+      uid: null,
+      token: null,
+      refresh_token: null,
+    });
     return this.prepare();
   },
+  authorized(params) {
+    return this.request({
+      method: 'POST',
+      url: 'https://login.live.com/oauth20_token.srf',
+      prefix: '',
+      headers: {
+        'Content-Type': 'application/x-www-form-urlencoded',
+      },
+      body: dumpQuery(Object.assign({}, {
+        client_id: config.client_id,
+        client_secret: config.client_secret,
+        redirect_uri: config.redirect_uri,
+        grant_type: 'authorization_code',
+      }, params)),
+      responseType: 'json',
+    })
+    .then(data => {
+      if (data.access_token) {
+        this.config.set({
+          uid: data.user_id,
+          token: data.access_token,
+          refresh_token: data.refresh_token,
+        });
+      } else {
+        throw data;
+      }
+    });
+  },
 });
-var onedrive = base.register(OneDrive);
+register(OneDrive);
+
+function normalize(item) {
+  return {
+    size: item.size,
+    uri: getURI(item.name),
+    modified: new Date(item.lastModifiedDateTime).getTime(),
+  };
+}

src/background/utils/cache.js

@@ -1,22 +1,21 @@
-function get(key) {
-  var obj = cache[key];
+const cache = {};
+
+export function getCache(key) {
+  const obj = cache[key];
   return obj && obj.value;
 }
-function set(key, value) {
+
+export function setCache(key, value) {
   if (value) {
-    var obj = cache[key];
-    if (!obj) obj = cache[key] = {
-      key: key,
-    };
+    let obj = cache[key];
+    if (!obj) {
+      obj = { key };
+      cache[key] = obj;
+    }
     obj.value = value;
     if (obj.timer) clearTimeout(obj.timer);
-    obj.timer = setTimeout(set, 3000, key);
+    obj.timer = setTimeout(setCache, 3000, key);
   } else {
     delete cache[key];
   }
 }
-var cache = {};
-module.exports = {
-  get: get,
-  set: set,
-};

src/background/utils/clipboard.js

@@ -1,16 +1,17 @@
-var textarea = document.createElement('textarea');
+const textarea = document.createElement('textarea');
 document.body.appendChild(textarea);
 
-var clipboardData = {};
+const clipboardData = {};
 function oncopy(e) {
   e.preventDefault();
   e.clipboardData.setData(clipboardData.type || 'text/plain', clipboardData.data);
 }
 document.addEventListener('copy', oncopy, false);
 
-exports.set = function (data) {
+/* eslint-disable import/prefer-default-export */
+export function setClipboard(data) {
   clipboardData.type = data.type;
   clipboardData.data = data.data;
   textarea.focus();
   document.execCommand('copy', false, null);
-};
+}

src/background/utils/db.js

@@ -0,0 +1,530 @@
+import Promise from 'sync-promise-lite';
+import { i18n } from 'src/common';
+import * as scriptUtils from './script';
+import { testScript, testBlacklist } from './tester';
+
+let db;
+let position;
+
+export const initialized = openDatabase().then(initPosition);
+
+function openDatabase() {
+  return new Promise((resolve, reject) => {
+    const request = indexedDB.open('Violentmonkey', 1);
+    request.onsuccess = () => {
+      db = request.result;
+      resolve();
+    };
+    request.onerror = e => {
+      const { error } = e.target;
+      console.error(`IndexedDB error: ${error.message}`);
+      reject(error);
+    };
+    request.onupgradeneeded = e => {
+      const _db = e.currentTarget.result;
+      // scripts: id uri custom meta enabled update code position
+      const os = _db.createObjectStore('scripts', {
+        keyPath: 'id',
+        autoIncrement: true,
+      });
+      os.createIndex('uri', 'uri', { unique: true });
+      os.createIndex('update', 'update', { unique: false });
+      // position should be unique at last
+      os.createIndex('position', 'position', { unique: false });
+      // require: uri code
+      _db.createObjectStore('require', { keyPath: 'uri' });
+      // cache: uri data
+      _db.createObjectStore('cache', { keyPath: 'uri' });
+      // values: uri values
+      _db.createObjectStore('values', { keyPath: 'uri' });
+    };
+  });
+}
+
+function initPosition() {
+  position = 0;
+  const os = db.transaction('scripts', 'readwrite').objectStore('scripts');
+  return new Promise(resolve => {
+    os.index('position').openCursor(null, 'prev').onsuccess = e => {
+      const { result } = e.target;
+      if (result) position = result.key;
+      resolve();
+    };
+  });
+}
+
+export function getScript(id, cTx) {
+  const tx = cTx || db.transaction('scripts');
+  const os = tx.objectStore('scripts');
+  return new Promise(resolve => {
+    os.get(id).onsuccess = e => {
+      resolve(e.target.result);
+    };
+  });
+}
+
+export function queryScript(id, meta, cTx) {
+  if (id) return getScript(id, cTx);
+  return new Promise(resolve => {
+    const uri = scriptUtils.getNameURI({ meta });
+    const tx = cTx || db.transaction('scripts');
+    tx.objectStore('scripts').index('uri').get(uri).onsuccess = e => {
+      resolve(e.target.result);
+    };
+  });
+}
+
+export function getScriptData(id) {
+  return getScript(id).then(script => {
+    if (!script) return Promise.reject();
+    const data = scriptUtils.getScriptInfo(script);
+    data.code = script.code;
+    return data;
+  });
+}
+
+export function getScriptInfos(ids) {
+  const tx = db.transaction('scripts');
+  return Promise.all(ids.map(id => getScript(id, tx)))
+  .then(scripts => scripts.filter(Boolean).map(scriptUtils.getScriptInfo));
+}
+
+export function getValues(uris, cTx) {
+  const tx = cTx || db.transaction('values');
+  const os = tx.objectStore('values');
+  return Promise.all(uris.map(uri => new Promise(resolve => {
+    os.get(uri).onsuccess = e => {
+      resolve(e.target.result);
+    };
+  })))
+  .then(data => data.reduce((result, value, i) => {
+    if (value) result[uris[i]] = value.values;
+    return result;
+  }, {}));
+}
+
+export function getScriptsByURL(url) {
+  const tx = db.transaction(['scripts', 'require', 'values', 'cache']);
+  return loadScripts()
+  .then(data => Promise.all([
+    loadRequires(data.require),
+    getValues(data.uris, tx),
+    getCacheB64(data.cache, tx),
+  ]).then(res => ({
+    scripts: data.scripts,
+    require: res[0],
+    values: res[1],
+    cache: res[2],
+  })));
+
+  function loadScripts() {
+    return getScriptsByIndex('position', null, tx)
+    .then(scripts => {
+      const data = {
+        uris: [],
+      };
+      const require = {};
+      const cache = {};
+      data.scripts = scripts.filter(script => {
+        if (testBlacklist(url) || !testScript(url, script)) return;
+        data.uris.push(script.uri);
+        script.meta.require.forEach(key => { require[key] = 1; });
+        Object.keys(script.meta.resources).forEach(key => {
+          cache[script.meta.resources[key]] = 1;
+        });
+        return true;
+      });
+      data.require = Object.keys(require);
+      data.cache = Object.keys(cache);
+      return data;
+    });
+  }
+  function loadRequires(uris) {
+    const os = tx.objectStore('require');
+    return Promise.all(uris.map(uri => new Promise(resolve => {
+      os.get(uri).onsuccess = e => {
+        resolve(e.target.result);
+      };
+    })))
+    .then(data => data.reduce((result, value, i) => {
+      if (value) result[uris[i]] = value.code;
+      return result;
+    }, {}));
+  }
+}
+
+export function getData() {
+  const tx = db.transaction(['scripts', 'cache']);
+  return loadScripts()
+  .then(data => loadCache(data.cache).then(cache => ({
+    cache,
+    scripts: data.scripts,
+  })));
+
+  function loadScripts() {
+    return getScriptsByIndex('position', null, tx)
+    .then(scripts => {
+      const data = {};
+      const cache = {};
+      data.scripts = scripts.map(script => {
+        const { icon } = script.meta;
+        if (scriptUtils.isRemote(icon)) cache[icon] = 1;
+        return scriptUtils.getScriptInfo(script);
+      });
+      data.cache = Object.keys(cache);
+      return data;
+    });
+  }
+  function loadCache(uris) {
+    return getCacheB64(uris, tx)
+    .then(cache => {
+      Object.keys(cache).forEach(key => {
+        cache[key] = `data:image/png;base64,${cache[key]}`;
+      });
+      return cache;
+    });
+  }
+}
+
+export function removeScript(id) {
+  const tx = db.transaction('scripts', 'readwrite');
+  return new Promise(resolve => {
+    const os = tx.objectStore('scripts');
+    os.delete(id).onsuccess = () => { resolve(); };
+  })
+  .then(() => {
+    browser.runtime.sendMessage({
+      cmd: 'RemoveScript',
+      data: id,
+    });
+  });
+}
+
+export function moveScript(id, offset) {
+  const tx = db.transaction('scripts', 'readwrite');
+  const os = tx.objectStore('scripts');
+  return getScript(id, tx)
+  .then(script => {
+    let pos = script.position;
+    let range;
+    let order;
+    let number = offset;
+    if (offset < 0) {
+      range = IDBKeyRange.upperBound(pos, true);
+      order = 'prev';
+      number = -number;
+    } else {
+      range = IDBKeyRange.lowerBound(pos, true);
+      order = 'next';
+    }
+    return new Promise(resolve => {
+      os.index('position').openCursor(range, order).onsuccess = e => {
+        const { result } = e.target;
+        if (result) {
+          number -= 1;
+          const { value } = result;
+          value.position = pos;
+          pos = result.key;
+          result.update(value);
+          if (number) result.continue();
+          else {
+            script.position = pos;
+            os.put(script).onsuccess = () => { resolve(); };
+          }
+        }
+      };
+    });
+  });
+}
+
+function getCacheB64(urls, cTx) {
+  const tx = cTx || db.transaction('cache');
+  const os = tx.objectStore('cache');
+  return Promise.all(urls.map(url => new Promise(resolve => {
+    os.get(url).onsuccess = e => {
+      resolve(e.target.result);
+    };
+  })))
+  .then(data => data.reduce((map, value, i) => {
+    if (value) map[urls[i]] = value.data;
+    return map;
+  }, {}));
+}
+
+function saveCache(uri, data, cTx) {
+  const tx = cTx || db.transaction('cache', 'readwrite');
+  const os = tx.objectStore('cache');
+  return new Promise(resolve => {
+    os.put({ uri, data }).onsuccess = () => { resolve(); };
+  });
+}
+
+function saveRequire(uri, code, cTx) {
+  const tx = cTx || db.transaction('require', 'readwrite');
+  const os = tx.objectStore('require');
+  return new Promise(resolve => {
+    os.put({ uri, code }).onsuccess = () => { resolve(); };
+  });
+}
+
+export function saveScript(script, cTx) {
+  script.enabled = script.enabled ? 1 : 0;
+  script.update = script.update ? 1 : 0;
+  if (!script.position) {
+    position += 1;
+    script.position = position;
+  }
+  const tx = cTx || db.transaction('scripts', 'readwrite');
+  const os = tx.objectStore('scripts');
+  return new Promise((resolve, reject) => {
+    const res = os.put(script);
+    res.onsuccess = e => {
+      script.id = e.target.result;
+      resolve(script);
+    };
+    res.onerror = () => {
+      reject(i18n('msgNamespaceConflict'));
+    };
+  });
+}
+
+const cacheRequests = {};
+function fetchCache(url, check) {
+  let promise = cacheRequests[url];
+  if (!promise) {
+    promise = scriptUtils.fetch(url, 'blob')
+    .then(res => Promise.resolve(check && check(res.response)).then(() => res.response))
+    .then(data => new Promise((resolve, reject) => {
+      const reader = new FileReader();
+      reader.onload = () => {
+        saveCache(url, window.btoa(this.result)).then(() => {
+          delete cacheRequests[url];
+          resolve();
+        });
+      };
+      reader.onerror = e => { reject(e); };
+      reader.readAsBinaryString(data);
+    }));
+    cacheRequests[url] = promise;
+  }
+  return promise;
+}
+
+const requireRequests = {};
+function fetchRequire(url) {
+  let promise = requireRequests[url];
+  if (!promise) {
+    promise = scriptUtils.fetch(url)
+    .then(res => saveRequire(url, res.responseText))
+    .catch(() => { console.error(`Error fetching required script: ${url}`); })
+    .then(() => { delete requireRequests[url]; });
+    requireRequests[url] = promise;
+  }
+  return promise;
+}
+
+export function setValue(uri, values) {
+  const os = db.transaction('values', 'readwrite').objectStore('values');
+  return new Promise(resolve => {
+    os.put({ uri, values }).onsuccess = () => { resolve(); };
+  });
+}
+
+export function updateScriptInfo(id, data, custom) {
+  const os = db.transaction('scripts', 'readwrite').objectStore('scripts');
+  return new Promise((resolve, reject) => {
+    os.get(id).onsuccess = e => {
+      const { result: script } = e.target;
+      if (!script) return reject();
+      Object.keys(data).forEach(key => {
+        if (key in script) script[key] = data[key];
+      });
+      Object.assign(script.custom, custom);
+      os.put(script).onsuccess = () => {
+        resolve(scriptUtils.getScriptInfo(script));
+      };
+    };
+  });
+}
+
+export function getExportData(ids, withValues) {
+  const tx = db.transaction(['scripts', 'values']);
+  return loadScripts()
+  .then(scripts => {
+    const res = { scripts };
+    if (withValues) {
+      return getValues(scripts.map(script => script.uri), tx)
+      .then(values => {
+        res.values = values;
+        return res;
+      });
+    }
+    return res;
+  });
+  function loadScripts() {
+    const os = tx.objectStore('scripts');
+    return Promise.all(ids.map(id => new Promise(resolve => {
+      os.get(id).onsuccess = e => {
+        resolve(e.target.result);
+      };
+    })))
+    .then(data => data.filter(Boolean));
+  }
+}
+
+export function vacuum() {
+  const tx = db.transaction(['scripts', 'require', 'cache', 'values'], 'readwrite');
+  return loadScripts()
+  .then(data => Promise.all([
+    vacuumPosition(data.ids),
+    vacuumCache('require', data.require),
+    vacuumCache('cache', data.cache),
+    vacuumCache('values', data.values),
+  ]).then(() => ({
+    require: data.require,
+    cache: data.cache,
+  })))
+  .then(data => Promise.all([
+    Object.keys(data.require).map(k => data.require[k] === 1 && fetchRequire(k)),
+    Object.keys(data.cache).map(k => data.cache[k] === 1 && fetchCache(k)),
+  ]));
+
+  function loadScripts() {
+    return getScriptsByIndex('position', null, tx)
+    .then(scripts => {
+      const data = {
+        require: {},
+        cache: {},
+        values: {},
+      };
+      data.ids = scripts.map(script => {
+        script.meta.require.forEach(uri => { data.require[uri] = 1; });
+        Object.keys(script.meta.resources).forEach(key => {
+          data.cache[script.meta.resources[key]] = 1;
+        });
+        if (scriptUtils.isRemote(script.meta.icon)) data.cache[script.meta.icon] = 1;
+        data.values[script.uri] = 1;
+        return script.id;
+      });
+      return data;
+    });
+  }
+  function vacuumPosition(ids) {
+    const os = tx.objectStore('scripts');
+    return ids.reduce((res, id, i) => res.then(() => new Promise(resolve => {
+      os.get(id).onsuccess = e => {
+        const { result } = e.target;
+        result.position = i + 1;
+        os.put(result).onsuccess = () => resolve();
+      };
+    })), Promise.resolve());
+  }
+  function vacuumCache(dbName, dict) {
+    const os = tx.objectStore(dbName);
+    const deleteCache = uri => new Promise(resolve => {
+      if (!dict[uri]) {
+        os.delete(uri).onsuccess = () => { resolve(); };
+      } else {
+        dict[uri] += 1;
+        resolve();
+      }
+    });
+    return new Promise(resolve => {
+      os.openCursor().onsuccess = e => {
+        const { result } = e.target;
+        if (result) {
+          const { value } = result;
+          deleteCache(value.uri).then(() => result.continue());
+        } else resolve();
+      };
+    });
+  }
+}
+
+export function getScriptsByIndex(index, value, cTx) {
+  const tx = cTx || db.transaction('scripts');
+  return new Promise(resolve => {
+    const os = tx.objectStore('scripts');
+    const list = [];
+    os.index(index).openCursor(value).onsuccess = e => {
+      const { result } = e.target;
+      if (result) {
+        list.push(result.value);
+        result.continue();
+      } else resolve(list);
+    };
+  });
+}
+
+export function parseScript(data) {
+  const meta = scriptUtils.parseMeta(data.code);
+  if (!meta.name) return Promise.reject(i18n('msgInvalidScript'));
+  const res = {
+    cmd: 'UpdateScript',
+    data: {
+      message: data.message == null ? i18n('msgUpdated') : data.message || '',
+    },
+  };
+  const tx = db.transaction(['scripts', 'require'], 'readwrite');
+  // @require
+  meta.require.forEach(url => {
+    const cache = data.require && data.require[url];
+    if (cache) saveRequire(url, cache, tx);
+    else fetchRequire(url);
+  });
+  // @resource
+  Object.keys(meta.resources).forEach(k => {
+    const url = meta.resources[k];
+    const cache = data.resources && data.resources[url];
+    if (cache) saveCache(url, cache);
+    else fetchCache(url);
+  });
+  // @icon
+  if (scriptUtils.isRemote(meta.icon)) {
+    fetchCache(meta.icon, blob => new Promise((resolve, reject) => {
+      const url = URL.createObjectURL(blob);
+      const image = new Image();
+      const free = () => URL.revokeObjectURL(url);
+      image.onload = () => {
+        free();
+        resolve(blob);
+      };
+      image.onerror = () => {
+        free();
+        reject();
+      };
+      image.src = url;
+    }));
+  }
+  return queryScript(data.id, meta, tx)
+  .then(result => {
+    let script;
+    if (result) {
+      if (data.isNew) throw i18n('msgNamespaceConflict');
+      script = result;
+    } else {
+      script = scriptUtils.newScript();
+      res.cmd = 'AddScript';
+      res.data.message = i18n('msgInstalled');
+    }
+    if (data.more) {
+      Object.keys(data.more).forEach(key => {
+        if (key in script) script[key] = data.more[key];
+      });
+    }
+    script.meta = meta;
+    script.code = data.code;
+    script.uri = scriptUtils.getNameURI(script);
+    // use referer page as default homepage
+    if (!meta.homepageURL && !script.custom.homepageURL && scriptUtils.isRemote(data.from)) {
+      script.custom.homepageURL = data.from;
+    }
+    if (scriptUtils.isRemote(data.url)) script.custom.lastInstallURL = data.url;
+    script.custom.modified = data.modified || Date.now();
+    return saveScript(script, tx);
+  })
+  .then(script => {
+    Object.assign(res.data, scriptUtils.getScriptInfo(script));
+    return res;
+  });
+}

src/background/utils/events.js

@@ -1,28 +1,28 @@
-function getEventEmitter() {
-  var events = {};
-  return {
-    on: on,
-    off: off,
-    fire: fire,
-  };
+export default function getEventEmitter() {
+  const events = {};
+  return { on, off, fire };
+
   function on(type, func) {
-    var list = events[type];
-    if (!list) list = events[type] = [];
+    let list = events[type];
+    if (!list) {
+      list = [];
+      events[type] = list;
+    }
     list.push(func);
   }
   function off(type, func) {
-    var list = events[type];
+    const list = events[type];
     if (list) {
-      var i = list.indexOf(func);
-      if (~i) list.splice(i, 1);
+      const i = list.indexOf(func);
+      if (i >= 0) list.splice(i, 1);
     }
   }
   function fire(type, data) {
-    var list = events[type];
-    list && list.forEach(function (func) {
-      func(data, type);
-    });
+    const list = events[type];
+    if (list) {
+      list.forEach(func => {
+        func(data, type);
+      });
+    }
   }
 }
-
-exports.getEventEmitter = getEventEmitter;

src/background/utils/options.js

@@ -0,0 +1,71 @@
+import { initHooks, debounce, normalizeKeys, object } from 'src/common';
+
+const defaults = {
+  isApplied: true,
+  autoUpdate: true,
+  ignoreGrant: false,
+  lastUpdate: 0,
+  showBadge: true,
+  exportValues: true,
+  closeAfterInstall: false,
+  trackLocalFile: false,
+  autoReload: false,
+  features: null,
+  blacklist: null,
+  syncScriptStatus: true,
+  sync: null,
+  customCSS: null,
+};
+let changes = {};
+const hooks = initHooks();
+const callHooksLater = debounce(callHooks, 100);
+
+function fireChange(key, value) {
+  changes[key] = value;
+  callHooksLater();
+}
+
+function callHooks() {
+  hooks.fire(changes);
+  changes = {};
+}
+
+export function getOption(key, def) {
+  const keys = normalizeKeys(key);
+  const mainKey = keys[0];
+  const value = localStorage.getItem(mainKey);
+  let obj;
+  if (value) {
+    try {
+      obj = JSON.parse(value);
+    } catch (e) {
+      // ignore invalid JSON
+    }
+  }
+  if (obj == null) obj = defaults[mainKey];
+  if (obj == null) obj = def;
+  return keys.length > 1 ? object.get(obj, keys.slice(1), def) : obj;
+}
+
+export function setOption(key, value) {
+  const keys = normalizeKeys(key);
+  const optionKey = keys.join('.');
+  let optionValue = value;
+  const mainKey = keys[0];
+  if (mainKey in defaults) {
+    if (keys.length > 1) {
+      optionValue = object.set(getOption(mainKey), keys.slice(1), value);
+    }
+    localStorage.setItem(mainKey, JSON.stringify(optionValue));
+    fireChange(optionKey, value);
+  }
+}
+
+export function getAllOptions() {
+  return Object.keys(defaults).reduce((res, key) => {
+    res[key] = getOption(key);
+    return res;
+  }, {});
+}
+
+export const hookOptions = hooks.hook;

src/background/utils/requests.js

@@ -0,0 +1,225 @@
+import { getUniqId } from 'src/common';
+import { setCache } from './cache';
+
+const requests = {};
+const verify = {};
+const specialHeaders = [
+  'user-agent',
+  'referer',
+  'origin',
+  'host',
+];
+// const tasks = {};
+
+export function getRequestId() {
+  const id = getUniqId();
+  requests[id] = {
+    id,
+    xhr: new XMLHttpRequest(),
+  };
+  return id;
+}
+
+function xhrCallbackWrapper(req) {
+  let lastPromise = Promise.resolve();
+  const { xhr } = req;
+  return evt => {
+    const res = {
+      id: req.id,
+      type: evt.type,
+      resType: xhr.responseType,
+    };
+    const data = {
+      finalUrl: req.finalUrl,
+      readyState: xhr.readyState,
+      responseHeaders: xhr.getAllResponseHeaders(),
+      status: xhr.status,
+      statusText: xhr.statusText,
+    };
+    res.data = data;
+    try {
+      data.responseText = xhr.responseText;
+    } catch (e) {
+      // ignore if responseText is unreachable
+    }
+    if (evt.type === 'loadend') clearRequest(req);
+    lastPromise = lastPromise.then(() => new Promise(resolve => {
+      if (xhr.response && xhr.responseType === 'blob') {
+        const reader = new FileReader();
+        reader.onload = () => {
+          data.response = reader.result;
+          resolve();
+        };
+        reader.readAsDataURL(xhr.response);
+      } else {
+        // default `null` for blob and '' for text
+        data.response = xhr.response;
+        resolve();
+      }
+    }))
+    .then(() => {
+      if (req.cb) req.cb(res);
+    });
+  };
+}
+
+export function httpRequest(details, cb) {
+  const req = requests[details.id];
+  if (!req || req.cb) return;
+  req.cb = cb;
+  const { xhr } = req;
+  try {
+    xhr.open(details.method, details.url, true, details.user, details.password);
+    xhr.setRequestHeader('VM-Verify', details.id);
+    if (details.headers) {
+      Object.keys(details.headers).forEach(key => {
+        xhr.setRequestHeader(
+          specialHeaders.includes(key.toLowerCase()) ? `VM-${key}` : key,
+          details.headers[key],
+        );
+      });
+    }
+    if (details.responseType) xhr.responseType = 'blob';
+    if (details.overrideMimeType) xhr.overrideMimeType(details.overrideMimeType);
+    const callback = xhrCallbackWrapper(req);
+    [
+      'abort',
+      'error',
+      'load',
+      'loadend',
+      'progress',
+      'readystatechange',
+      'timeout',
+    ]
+    .forEach(evt => { xhr[`on${evt}`] = callback; });
+    req.finalUrl = details.url;
+    xhr.send(details.data);
+  } catch (e) {
+    console.warn(e);
+  }
+}
+
+function clearRequest(req) {
+  if (req.coreId) delete verify[req.coreId];
+  delete requests[req.id];
+}
+
+export function abortRequest(id) {
+  const req = requests[id];
+  if (req) {
+    req.xhr.abort();
+    clearRequest(req);
+  }
+}
+
+// Watch URL redirects
+browser.webRequest.onBeforeRedirect.addListener(details => {
+  const reqId = verify[details.requestId];
+  if (reqId) {
+    const req = requests[reqId];
+    if (req) req.finalUrl = details.redirectUrl;
+  }
+}, {
+  urls: ['<all_urls>'],
+  types: ['xmlhttprequest'],
+});
+
+// Modifications on headers
+browser.webRequest.onBeforeSendHeaders.addListener(details => {
+  const headers = details.requestHeaders;
+  const newHeaders = [];
+  const vmHeaders = {};
+  headers.forEach(header => {
+    // if (header.name === 'VM-Task') {
+    //   tasks[details.requestId] = header.value;
+    // } else
+    if (header.name.startsWith('VM-')) {
+      vmHeaders[header.name.slice(3)] = header.value;
+    } else {
+      newHeaders.push(header);
+    }
+  });
+  const reqId = vmHeaders.Verify;
+  if (reqId) {
+    const req = requests[reqId];
+    if (req) {
+      delete vmHeaders.Verify;
+      verify[details.requestId] = reqId;
+      req.coreId = details.requestId;
+      Object.keys(vmHeaders).forEach(name => {
+        if (specialHeaders.includes(name.toLowerCase())) {
+          newHeaders.push({ name, value: vmHeaders[name] });
+        }
+      });
+    }
+  }
+  return { requestHeaders: newHeaders };
+}, {
+  urls: ['<all_urls>'],
+  types: ['xmlhttprequest'],
+}, ['blocking', 'requestHeaders']);
+
+// tasks are not necessary now, turned off
+// Stop redirects
+// browser.webRequest.onHeadersReceived.addListener(details => {
+//   const task = tasks[details.requestId];
+//   if (task) {
+//     delete tasks[details.requestId];
+//     if (task === 'Get-Location' && [301, 302, 303].includes(details.statusCode)) {
+//       const locationHeader = details.responseHeaders.find(
+//         header => header.name.toLowerCase() === 'location');
+//       const base64 = locationHeader && locationHeader.value;
+//       return {
+//         redirectUrl: `data:text/plain;charset=utf-8,${base64 || ''}`,
+//       };
+//     }
+//   }
+// }, {
+//   urls: ['<all_urls>'],
+//   types: ['xmlhttprequest'],
+// }, ['blocking', 'responseHeaders']);
+// browser.webRequest.onCompleted.addListener(details => {
+//   delete tasks[details.requestId];
+// }, {
+//   urls: ['<all_urls>'],
+//   types: ['xmlhttprequest'],
+// });
+// browser.webRequest.onErrorOccurred.addListener(details => {
+//   delete tasks[details.requestId];
+// }, {
+//   urls: ['<all_urls>'],
+//   types: ['xmlhttprequest'],
+// });
+
+browser.webRequest.onBeforeRequest.addListener(req => {
+  // onBeforeRequest is fired for local files too
+  if (req.method === 'GET' && /\.user\.js([?#]|$)/.test(req.url)) {
+    // {cancel: true} will redirect to a blocked view
+    const noredirect = { redirectUrl: 'javascript:history.back()' };  // eslint-disable-line no-script-url
+    const x = new XMLHttpRequest();
+    x.open('GET', req.url, false);
+    try {
+      x.send();
+    } catch (e) {
+      // Request is redirected
+      return;
+    }
+    if ((!x.status || x.status === 200) && !/^\s*</.test(x.responseText)) {
+      setCache(req.url, x.responseText);
+      // Firefox: slashes are decoded automatically by Firefox, thus cannot be
+      // used as separators
+      const optionsURL = browser.runtime.getURL(browser.runtime.getManifest().options_page);
+      const url = `${optionsURL}#confirm?u=${encodeURIComponent(req.url)}`;
+      if (req.tabId < 0) browser.tabs.create({ url });
+      else {
+        browser.tabs.get(req.tabId).then(tab => {
+          browser.tabs.create({ url: `${url}&f=${encodeURIComponent(tab.url)}` });
+        });
+      }
+      return noredirect;
+    }
+  }
+}, {
+  urls: ['<all_urls>'],
+  types: ['main_frame'],
+}, ['blocking']);

src/background/utils/script.js

@@ -1,94 +1,99 @@
-module.exports = {
-  isRemote: function (url) {
-    return url && !(/^(file|data):/.test(url));
-  },
-  fetch: function (url, type, headers) {
-    return new Promise(function (resolve, reject) {
-      var xhr = new XMLHttpRequest;
-      xhr.open('GET', url, true);
-      if (type) xhr.responseType = type;
-      headers && Object.keys(headers).forEach(function (key) {
+export function isRemote(url) {
+  return url && !(/^(file|data):/.test(url));
+}
+
+export function fetch(url, type, headers) {
+  return new Promise((resolve, reject) => {
+    const xhr = new XMLHttpRequest();
+    xhr.open('GET', url, true);
+    if (type) xhr.responseType = type;
+    if (headers) {
+      Object.keys(headers).forEach(key => {
         xhr.setRequestHeader(key, headers[key]);
       });
-      xhr.onloadend = function () {
-        (xhr.status > 300 ? reject : resolve)(xhr);
-      };
-      xhr.send();
-    });
-  },
-  parseMeta: function (code) {
-    // initialize meta, specify those with multiple values allowed
-    var meta = {
-      include: [],
-      exclude: [],
-      match: [],
-      require: [],
-      resource: [],
-      grant: [],
-    };
-    var flag = -1;
-    code.replace(/(?:^|\n)\/\/\s*([@=]\S+)(.*)/g, function (_match, group1, group2) {
-      if (flag < 0 && group1 == '==UserScript==') {
-        // start meta
-        flag = 1;
-      } else if (flag > 0 && group1 == '==/UserScript==') {
-        // end meta
-        flag = 0;
-      }
-      if (flag == 1 && group1[0] == '@') {
-        var key = group1.slice(1);
-        var val = group2.replace(/^\s+|\s+$/g, '');
-        var value = meta[key];
-        // multiple values allowed
-        if (value && value.push) value.push(val);
-        // only first value will be stored
-        else if (!(key in meta)) meta[key] = val;
-      }
-    });
-    meta.resources = {};
-    meta.resource.forEach(function (line) {
-      var pair = line.match(/^(\w\S*)\s+(.*)/);
-      if (pair) meta.resources[pair[1]] = pair[2];
-    });
-    delete meta.resource;
-    // @homepageURL: compatible with @homepage
-    if (!meta.homepageURL && meta.homepage) meta.homepageURL = meta.homepage;
-    return meta;
-  },
-  newScript: function () {
-    var script = {
-      custom: {},
-      enabled: 1,
-      update: 1,
-      code: '// ==UserScript==\n// @name New Script\n// @namespace Violentmonkey Scripts\n// @grant none\n// ==/UserScript==\n',
-    };
-    script.meta = module.exports.parseMeta(script.code);
-    return script;
-  },
-  getScriptInfo: function (script) {
-    return {
-      id: script.id,
-      custom: script.custom,
-      meta: script.meta,
-      enabled: script.enabled,
-      update: script.update,
+    }
+    xhr.onloadend = () => {
+      (xhr.status > 300 ? reject : resolve)(xhr);
     };
-  },
-  getNameURI: function (script) {
-    var ns = script.meta.namespace || '';
-    var name = script.meta.name || '';
-    var nameURI = escape(ns) + ':' + escape(name) + ':';
-    if (!ns && !name) nameURI += script.id || '';
-    return nameURI;
-  },
-  compareVersion: function (ver1, ver2) {
-    ver1 = (ver1 || '').split('.');
-    ver2 = (ver2 || '').split('.');
-    var len1 = ver1.length, len2 = ver2.length;
-    for (var i = 0; i < len1 || i < len2; i ++) {
-      var delta = (parseInt(ver1[i], 10) || 0) - (parseInt(ver2[i], 10) || 0);
-      if (delta) return delta < 0 ? -1 : 1;
+    xhr.send();
+  });
+}
+
+export function parseMeta(code) {
+  // initialize meta, specify those with multiple values allowed
+  const meta = {
+    include: [],
+    exclude: [],
+    match: [],
+    require: [],
+    resource: [],
+    grant: [],
+  };
+  let flag = -1;
+  code.replace(/(?:^|\n)\/\/\s*([@=]\S+)(.*)/g, (_match, group1, group2) => {
+    if (flag < 0 && group1 === '==UserScript==') {
+      // start meta
+      flag = 1;
+    } else if (flag > 0 && group1 === '==/UserScript==') {
+      // end meta
+      flag = 0;
+    }
+    if (flag === 1 && group1[0] === '@') {
+      const key = group1.slice(1);
+      const val = group2.trim();
+      const data = meta[key];
+      // multiple values allowed
+      if (data && data.push) data.push(val);
+      // only first value will be stored
+      else if (!(key in meta)) meta[key] = val;
     }
-    return 0;
-  },
-};
+  });
+  meta.resources = {};
+  meta.resource.forEach(line => {
+    const pair = line.match(/^(\w\S*)\s+(.*)/);
+    if (pair) meta.resources[pair[1]] = pair[2];
+  });
+  delete meta.resource;
+  // @homepageURL: compatible with @homepage
+  if (!meta.homepageURL && meta.homepage) meta.homepageURL = meta.homepage;
+  return meta;
+}
+
+export function newScript() {
+  const script = {
+    custom: {},
+    enabled: 1,
+    update: 1,
+    code: '// ==UserScript==\n// @name New Script\n// @namespace Violentmonkey Scripts\n// @grant none\n// ==/UserScript==\n',
+  };
+  script.meta = parseMeta(script.code);
+  return script;
+}
+
+export function getScriptInfo(script) {
+  return {
+    id: script.id,
+    custom: script.custom,
+    meta: script.meta,
+    enabled: script.enabled,
+    update: script.update,
+  };
+}
+
+export function getNameURI(script) {
+  const ns = script.meta.namespace || '';
+  const name = script.meta.name || '';
+  let nameURI = `${escape(ns)}:${escape(name)}:`;
+  if (!ns && !name) nameURI += script.id || '';
+  return nameURI;
+}
+
+export function compareVersion(ver1, ver2) {
+  const parts1 = (ver1 || '').split('.');
+  const parts2 = (ver2 || '').split('.');
+  for (let i = 0; i < parts1.length || i < parts2.length; i += 1) {
+    const delta = (parseInt(ver1[i], 10) || 0) - (parseInt(ver2[i], 10) || 0);
+    if (delta) return delta < 0 ? -1 : 1;
+  }
+  return 0;
+}

src/background/utils/search.js

@@ -1,14 +1,13 @@
-module.exports = {
-  load: function (string) {
-    return string.split('&').reduce(function (data, piece) {
-      var parts = piece.split('=');
-      data[decodeURIComponent(parts[0])] = decodeURIComponent(parts[1]);
-      return data;
-    }, {});
-  },
-  dump: function (dict) {
-    return Object.keys(dict).map(function (key) {
-      return encodeURIComponent(key) + '=' + encodeURIComponent(dict[key]);
-    }).join('&');
-  },
-};
+export function loadQuery(string) {
+  return string.split('&').reduce((data, piece) => {
+    const parts = piece.split('=');
+    data[decodeURIComponent(parts[0])] = decodeURIComponent(parts[1]);
+    return data;
+  }, {});
+}
+
+export function dumpQuery(dict) {
+  return Object.keys(dict)
+  .map(key => `${encodeURIComponent(key)}=${encodeURIComponent(dict[key])}`)
+  .join('&');
+}

src/background/utils/sync-promise.js

@@ -1,175 +0,0 @@
-/**
- * @desc A synchronous Promise implementation.
- * @author Gerald <[email protected]>
- *
- * https://github.com/gera2ld/sync-promise-lite
- */
-!function (root, factory) {
-  if (typeof module === 'object' && module.exports)
-    module.exports = factory();
-  else
-    root.Promise = root.Promise || factory();
-}(typeof window !== 'undefined' ? window : this, function () {
-
-  var PENDING = 'pending';
-  var FULFILLED = 'fulfilled';
-  var REJECTED = 'rejected';
-
-  function syncCall(func, args) {
-    func.apply(null, args);
-  }
-  function thenFactory(isStatus, getValue, addHandler) {
-    return function (okHandler, errHandler) {
-      var pending = true;
-      var handle;
-      addHandler(function () {
-        pending = false;
-        handle && handle();
-      });
-      return new Promise(function (resolve, reject) {
-        handle = function () {
-          var result;
-          var resolved = isStatus(FULFILLED);
-          var handler = resolved ? okHandler : errHandler;
-          if (handler) {
-            try {
-              result = handler(getValue());
-            } catch (e) {
-              return reject(e);
-            }
-          } else {
-            result = getValue();
-            if (!resolved) return reject(result);
-          }
-          resolve(result);
-        }
-        pending || handle();
-      });
-    };
-  }
-
-  function Promise(resolver) {
-    var status = PENDING;
-    var value;
-    var handlers = [];
-    var uncaught = true;
-    var resolve = function (data) {
-      if (!isStatus(PENDING)) return;
-      if (data && typeof data.then === 'function') {
-        data.then(resolve, reject);
-      } else {
-        status = FULFILLED;
-        value = data;
-        then();
-      }
-    };
-    var reject = function (reason) {
-      if (!isStatus(PENDING)) return;
-      status = REJECTED;
-      value = reason;
-      setTimeout(function () {
-        uncaught && Promise.onUncaught(reason);
-      });
-      then();
-    };
-    var then = function () {
-      handlers.splice(0).forEach(function (func) {
-        syncCall(func);
-      });
-    };
-    var isStatus = function (_status) {
-      return status === _status;
-    };
-    var getValue = function () {
-      return value;
-    };
-    var addHandler = function (handler) {
-      uncaught = false;
-      if (isStatus(PENDING)) handlers.push(handler);
-      else syncCall(handler);
-    };
-    this.then = thenFactory(isStatus, getValue, addHandler);
-    syncCall(resolver, [resolve, reject]);
-  }
-
-  Promise.onUncaught = function (reason) {
-    console.error('Uncaught (in promise)', reason);
-  };
-
-  Promise.prototype.catch = function (errHandler) {
-    return this.then(null, errHandler);
-  };
-
-  Promise.resolve = function (data) {
-    return new Promise(function (resolve) {
-      resolve(data);
-    });
-  };
-
-  Promise.reject = function (data) {
-    return new Promise(function (resolve, reject) {
-      reject(data);
-    });
-  };
-
-  Promise.all = function (promises) {
-    return new Promise(function (resolve, reject) {
-      function rejectAll(reason) {
-        if (results) {
-          results = null;
-          reject(reason);
-        }
-      }
-      function resolveOne(data, i) {
-        if (results) {
-          results[i] = data;
-          pending --;
-          check();
-        }
-      }
-      function check() {
-        results && !pending && resolve(results);
-      }
-      var results = [];
-      var pending = promises.length;
-      promises.forEach(function (promise, i) {
-        if (promise instanceof Promise) {
-          promise.then(function (data) {
-            resolveOne(data, i);
-          }, rejectAll);
-        } else {
-          resolveOne(promise, i);
-        }
-      });
-      check();
-    });
-  };
-
-  Promise.race = function (promises) {
-    return new Promise(function (resolve, reject) {
-      function resolveAll(data) {
-        if (pending) {
-          pending = false;
-          resolve(data);
-        }
-      }
-      function rejectAll(reason) {
-        if (pending) {
-          pending = false;
-          reject(reason);
-        }
-      }
-      var pending = true;
-      promises.forEach(function (promise) {
-        if (promise instanceof Promise) {
-          promise.then(resolveAll, rejectAll);
-        } else {
-          resolveAll(promise);
-        }
-      });
-    });
-  };
-
-  return Promise;
-
-});

src/background/utils/tester.js

@@ -1,16 +1,17 @@
-var options = require('../options');
+import { getOption, hookOptions } from './options';
 
-function testScript(url, script) {
-  var custom = script.custom;
-  var meta = script.meta;
-  var inc = [], exc = [], mat = [];
+export function testScript(url, script) {
+  const { custom, meta } = script;
+  let inc = [];
+  let exc = [];
+  let mat = [];
   if (custom._match !== false && meta.match) mat = mat.concat(meta.match);
   if (custom.match) mat = mat.concat(custom.match);
   if (custom._include !== false && meta.include) inc = inc.concat(meta.include);
   if (custom.include) inc = inc.concat(custom.include);
   if (custom._exclude !== false && meta.exclude) exc = exc.concat(meta.exclude);
   if (custom.exclude) exc = exc.concat(custom.exclude);
-  var ok = !mat.length && !inc.length;
+  let ok = !mat.length && !inc.length;
   // @match
   ok = ok || testMatches(url, mat);
   // @include
@@ -21,45 +22,41 @@ function testScript(url, script) {
 }
 
 function testRules(url, rules) {
-  return rules.some(function (rule) {
-    return autoReg(rule).test(url);
-  });
+  return rules.some(rule => autoReg(rule).test(url));
 }
 function testMatches(url, rules) {
-  if (rules.length) {
-    var test = matchTester(url);
-    return rules.some(test);
-  }
-  return false;
+  return rules.length && rules.some(matchTester(url));
 }
 
 function str2RE(str) {
-  return RegExp('^' + str.replace(/([.?\/])/g, '\\$1').replace(/\*/g, '.*?') + '$');
+  const re = str.replace(/([.?/])/g, '\\$1').replace(/\*/g, '.*?');
+  return RegExp(`^${re}$`);
 }
 
 function autoReg(str) {
-  return str.length > 1 && str.charAt(0) === '/' && str.charAt(str.length - 1) === '/'
-    ? RegExp(str.slice(1, -1))  // Regular-expression
-    : str2RE(str);              // String with wildcards
+  if (str.length > 1 && str[0] === '/' && str[str.length - 1] === '/') {
+    return RegExp(str.slice(1, -1));  // Regular-expression
+  }
+  return str2RE(str);              // String with wildcards
 }
 
 function matchTester(url) {
   function matchScheme(rule, data) {
     // exact match
-    if (rule == data) return 1;
+    if (rule === data) return 1;
     // * = http | https
-    if (rule == '*' && /^https?$/i.test(data)) return 1;
+    if (rule === '*' && /^https?$/i.test(data)) return 1;
     return 0;
   }
   function matchHost(rule, data) {
     // * matches all
-    if (rule == '*') return 1;
+    if (rule === '*') return 1;
     // exact match
-    if (rule == data) return 1;
+    if (rule === data) return 1;
     // *.example.com
     if (/^\*\.[^*]*$/.test(rule)) {
       // matches the specified domain
-      if (rule.slice(2) == data) return 1;
+      if (rule.slice(2) === data) return 1;
       // matches subdomains
       if (str2RE(rule).test(data)) return 1;
     }
@@ -68,11 +65,11 @@ function matchTester(url) {
   function matchPath(rule, data) {
     return str2RE(rule).test(data);
   }
-  var RE = /(.*?):\/\/([^\/]*)\/(.*)/;
-  var urlParts = url.match(RE);
-  return function (str) {
-    if (str == '<all_urls>') return true;
-    var parts = str.match(RE);
+  const RE = /(.*?):\/\/([^/]*)\/(.*)/;
+  const urlParts = url.match(RE);
+  return str => {
+    if (str === '<all_urls>') return true;
+    const parts = str.match(RE);
     return !!parts
       && matchScheme(parts[1], urlParts[1])
       && matchHost(parts[2], urlParts[2])
@@ -80,25 +77,15 @@ function matchTester(url) {
   };
 }
 
-var testBlacklist = function () {
-  function testBlacklist(url) {
-    return blacklistRE.some(function (re) {
-      return re.test(url);
-    });
-  }
-  function reset(list) {
-    blacklistRE = (list || []).map(function (rule) {
-      return autoReg(rule);
-    });
-  }
-  var blacklistRE = [];
-  reset(options.get('blacklist'));
-  options.hook(function (changes) {
-    var blacklist = changes.blacklist;
-    blacklist && reset(blacklist);
-  });
-  return testBlacklist;
-}();
-
-exports.testScript = testScript;
-exports.testBlacklist = testBlacklist;
+let blacklistRE = [];
+resetBlacklist(getOption('blacklist'));
+hookOptions(changes => {
+  const { blacklist } = changes;
+  if (blacklist) resetBlacklist(blacklist);
+});
+export function testBlacklist(url) {
+  return blacklistRE.some(re => re.test(url));
+}
+function resetBlacklist(list) {
+  blacklistRE = (list || []).map(rule => autoReg(rule));
+}

src/background/utils/update.js

@@ -0,0 +1,82 @@
+import { i18n } from 'src/common';
+import { parseScript } from './db';
+import * as scriptUtils from './script';
+
+const processes = {};
+
+function doCheckUpdate(script) {
+  const res = {
+    cmd: 'UpdateScript',
+    data: {
+      id: script.id,
+      checking: true,
+    },
+  };
+  const downloadURL = (
+    script.custom.downloadURL
+    || script.meta.downloadURL
+    || script.custom.lastInstallURL
+  );
+  const updateURL = script.custom.updateURL || script.meta.updateURL || downloadURL;
+  const okHandler = xhr => {
+    const meta = scriptUtils.parseMeta(xhr.responseText);
+    if (scriptUtils.compareVersion(script.meta.version, meta.version) < 0) return Promise.resolve();
+    res.data.checking = false;
+    res.data.message = i18n('msgNoUpdate');
+    browser.runtime.sendMessage(res);
+    return Promise.reject();
+  };
+  const errHandler = () => {
+    res.data.checking = false;
+    res.data.message = i18n('msgErrorFetchingUpdateInfo');
+    browser.runtime.sendMessage(res);
+    return Promise.reject();
+  };
+  const update = () => {
+    if (!downloadURL) {
+      res.data.message = `<span class="new">${i18n('msgNewVersion')}</span>`;
+      browser.runtime.sendMessage(res);
+      return Promise.reject();
+    }
+    res.data.message = i18n('msgUpdating');
+    browser.runtime.sendMessage(res);
+    return scriptUtils.fetch(downloadURL)
+    .then(xhr => xhr.responseText, () => {
+      res.data.checking = false;
+      res.data.message = i18n('msgErrorFetchingScript');
+      browser.runtime.sendMessage(res);
+      return Promise.reject();
+    });
+  };
+  if (!updateURL) return Promise.reject();
+  res.data.message = i18n('msgCheckingForUpdate');
+  browser.runtime.sendMessage(res);
+  return scriptUtils.fetch(updateURL, null, {
+    Accept: 'text/x-userscript-meta',
+  })
+  .then(okHandler, errHandler)
+  .then(update);
+}
+
+export default function checkUpdate(script) {
+  let promise = processes[script.id];
+  if (!promise) {
+    promise = doCheckUpdate(script)
+    .then(code => {
+      delete processes[script.id];
+      return parseScript({
+        code,
+        id: script.id,
+      })
+      .then(res => {
+        res.data.checking = false;
+        browser.runtime.sendMessage(res);
+      });
+    }, () => {
+      delete processes[script.id];
+      // return Promise.reject();
+    });
+    processes[script.id] = promise;
+  }
+  return promise;
+}

src/options/index.html

@@ -1,19 +1,13 @@
 <!doctype html>
 <html>
 <head>
-  <meta charset="utf-8">
-  <title></title>
-  <link rel="shortcut icon" type="image/png" href="/public/images/icon16.png">
-  <link rel="stylesheet" href="style.css">
-  <script src="/public/lib/vue.min.js"></script>
-  <script src="/public/lib/zip.js/zip.js"></script>
-  <script src="/public/lib/define.js"></script>
-  <script src="/public/mylib/browser.js"></script>
-  <script src="/common.js"></script>
-  <script src="/cache.js"></script>
+<meta charset="utf-8">
+<title></title>
+<link rel="shortcut icon" type="image/png" href="/public/images/icon16.png">
+<script src="/public/lib/zip.js/zip.js"></script>
+<script src="/public/browser.js"></script>
 </head>
 <body>
-  <div id="app"></div>
-  <script src="app.js"></script>
+<div id="app"></div>
 </body>
 </html>

src/options/views/confirm.vue

@@ -93,7 +93,7 @@ export default {
         const length = script.require.length + urls.length;
         if (!length) return;
         let finished = 0;
-        let error = [];
+        const error = [];
         const updateStatus = () => {
           this.message = this.i18n('msgLoadingDependency', [finished, length]);
         };
@@ -107,7 +107,7 @@ export default {
         promises = promises.map(promise => promise.then(() => {
           finished += 1;
           updateStatus();
-        }, (url) => {
+        }, url => {
           error.push(url);
         }));
         return Promise.all(promises).then(() => {
@@ -127,8 +127,8 @@ export default {
       window.close();
     },
     getFile(url, isBlob) {
-      return new Promise((resolve, reject) {
-        const xhr = new XMLHttpRequest;
+      return new Promise((resolve, reject) => {
+        const xhr = new XMLHttpRequest();
         xhr.open('GET', url, true);
         if (isBlob) xhr.responseType = 'blob';
         xhr.onloadend = () => {
@@ -153,7 +153,7 @@ export default {
       })
       .then(text => text || Promise.reject())
       .catch(() => this.getFile(url))
-      .catch((url) => {
+      .catch(() => {
         this.message = this.i18n('msgErrorLoadingData');
         throw url;
       });

src/options/views/message.vue

@@ -2,7 +2,7 @@
   <transition-group tag="div" name="message">
     <div v-for="message in store.messages" class="message"
     :key="message" v-text="message.text"></div>
-  </transition>
+  </transition-group>
 </template>
 
 <script>

src/options/views/tab-installed.vue

@@ -20,7 +20,7 @@
 
 <script>
 import { i18n, sendMessage } from 'src/common';
-import Item from './script';
+import Item from './script-item';
 import Edit from './edit';
 import { store } from '../utils';
 

src/popup/app.js

@@ -1,57 +1,51 @@
-var _ = require('src/common');
-_.initOptions();
-var App = require('./views/app');
-var utils = require('./utils');
+import Vue from 'vue';
+import options from 'src/common/options';
+import { sendMessage } from 'src/common';
+import App from './views/app';
+import { store } from './utils';
 
 new Vue({
-  el: '#app',
-  render: function (h) {
-    return h(App);
-  },
-});
+  render: h => h(App),
+}).$mount('#app');
 
-function init() {
-  var currentTab = utils.store.currentTab;
-  browser.tabs.sendMessage(currentTab.id, {cmd: 'GetPopup'});
-  if (currentTab && /^https?:\/\//i.test(currentTab.url)) {
-    var matches = currentTab.url.match(/:\/\/(?:www\.)?([^\/]*)/);
-    var domain = matches[1];
-    var domains = domain.split('.').reduceRight(function (res, part) {
-      var last = res[0];
-      if (last) part += '.' + last;
-      res.unshift(part);
-      return res;
-    }, []);
-    domains.length > 1 && domains.pop();
-    utils.store.domains = domains;
-  }
-}
-
-var handlers = {
-  SetPopup: function (data, src, _callback) {
-    if (utils.store.currentTab.id !== src.tab.id) return;
-    utils.store.commands = data.menus;
-    _.sendMessage({
+const handlers = {
+  SetPopup(data, src) {
+    if (store.currentTab.id !== src.tab.id) return;
+    store.commands = data.menus;
+    sendMessage({
       cmd: 'GetMetas',
       data: data.ids,
-    }).then(function (scripts) {
-      utils.store.scripts = scripts;
+    })
+    .then(scripts => {
+      store.scripts = scripts;
     });
   },
-  UpdateOptions: function (data) {
-    _.options.update(data);
+  UpdateOptions(data) {
+    options.update(data);
   },
 };
-browser.runtime.onMessage.addListener(function (req, src, callback) {
-  var func = handlers[req.cmd];
+browser.runtime.onMessage.addListener((req, src, callback) => {
+  const func = handlers[req.cmd];
   if (func) func(req.data, src, callback);
 });
 
-browser.tabs.query({currentWindow: true, active: true})
-.then(function (tabs) {
-  utils.store.currentTab = {
+browser.tabs.query({ currentWindow: true, active: true })
+.then(tabs => {
+  const currentTab = {
     id: tabs[0].id,
     url: tabs[0].url,
   };
-  init();
+  store.currentTab = currentTab;
+  browser.tabs.sendMessage(currentTab.id, { cmd: 'GetPopup' });
+  if (currentTab && /^https?:\/\//i.test(currentTab.url)) {
+    const matches = currentTab.url.match(/:\/\/(?:www\.)?([^/]*)/);
+    const domain = matches[1];
+    const domains = domain.split('.').reduceRight((res, part) => {
+      const last = res[0];
+      res.unshift(last ? `${part}.${last}` : part);
+      return res;
+    }, []);
+    if (domains.length) domains.pop();
+    store.domains = domains;
+  }
 });

src/popup/index.html

@@ -1,17 +1,12 @@
 <!DOCTYPE html>
 <html>
 <head>
-  <meta charset="utf-8">
-  <title>Popup Menu - Violentmonkey</title>
-  <link rel="stylesheet" href="style.css">
-  <script src="/public/lib/vue.min.js"></script>
-  <script src="/public/lib/define.js"></script>
-  <script src="/public/mylib/browser.js"></script>
-  <script src="/common.js"></script>
-  <script src="/cache.js"></script>
+<meta charset="utf-8">
+<title>Popup Menu - Violentmonkey</title>
+<link rel="stylesheet" href="style.css">
+<script src="/public/mylib/browser.js"></script>
 </head>
 <body>
-  <div id="app"></div>
-  <script src="app.js"></script>
+<div id="app"></div>
 </body>
 </html>

src/popup/utils/index.js

@@ -1,4 +1,5 @@
-exports.store = {
+/* eslint-disable import/prefer-default-export */
+export const store = {
   scripts: [],
   commands: [],
   domains: [],

src/popup/views/app.vue

@@ -0,0 +1,165 @@
+<template>
+  <div id="app">
+    <div class="logo" :class="{disabled:!options.isApplied}">
+      <img src="/public/images/icon128.png">
+    </div>
+    <div class="menu-item" :class="{disabled:!options.isApplied}" @click="onToggle">
+      <icon :name="getSymbolCheck(options.isApplied)"></icon>
+      <span v-text="options.isApplied ? i18n('menuScriptEnabled') : i18n('menuScriptDisabled')"></span>
+    </div>
+    <div class="menu">
+      <div class="menu-item" @click="onManage">
+        <icon name="cog"></icon>
+        <span v-text="i18n('menuDashboard')"></span>
+      </div>
+    </div>
+    <div class="menu menu-domains" v-show="domains.length" :class="{collapse:activeMenu!=='domains'}">
+      <div class="menu-item" @click="toggleMenu('domains')">
+        <icon name="search"></icon>
+        <icon name="more" class="icon-right icon-collapse"></icon>
+        <span v-text="i18n('menuFindScripts')"></span>
+      </div>
+      <div class="submenu">
+        <div class="menu-item" v-for="item in domains" @click="onFindScripts(item)">
+          <span v-text="item.name"></span>
+        </div>
+      </div>
+    </div>
+    <div class="menu menu-commands" v-show="commands.length" :class="{collapse:activeMenu!=='commands'}">
+      <div class="menu-item" @click="toggleMenu('commands')">
+        <icon name="more" class="icon-right icon-collapse"></icon>
+        <span v-text="i18n('menuCommands')"></span>
+      </div>
+      <div class="submenu">
+        <div class="menu-item" v-for="item in commands" @click="onCommand(item)">
+          <span v-text="item.name"></span>
+        </div>
+      </div>
+    </div>
+    <div class="menu menu-scripts" v-show="scripts.length" :class="{collapse:activeMenu!=='scripts'}">
+      <div class="menu-item" @click="toggleMenu('scripts')">
+        <icon name="more" class="icon-right icon-collapse"></icon>
+        <span v-text="i18n('menuMatchedScripts')"></span>
+      </div>
+      <div class="submenu">
+        <div class="menu-item" v-for="item in scripts" @click="onToggleScript(item)" :class="{disabled:!item.data.enabled}">
+          <icon :name="getSymbolCheck(item.data.enabled)" class="icon-right"></icon>
+          <span v-text="item.name"></span>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+import options from 'src/common/options';
+import { getLocaleString, sendMessage } from 'src/common';
+import Icon from './icon';
+import { store } from '../utils';
+
+const optionsData = {
+  isApplied: options.get('isApplied'),
+};
+options.hook(changes => {
+  if ('isApplied' in changes) {
+    optionsData.isApplied = changes.isApplied;
+  }
+});
+
+export default {
+  components: {
+    Icon,
+  },
+  data() {
+    return {
+      store,
+      options: optionsData,
+      activeMenu: 'scripts',
+      collapse: {
+        domains: true,
+        commands: true,
+        scripts: false,
+      },
+    };
+  },
+  computed: {
+    domains() {
+      return this.store.domains.map(item => ({
+        name: item,
+        data: item,
+      }));
+    },
+    commands() {
+      return this.store.commands.map(item => ({
+        name: item[0],
+        data: item,
+      }));
+    },
+    scripts() {
+      return this.store.scripts.map(script => ({
+        name: script.custom.name || getLocaleString(script.meta, 'name'),
+        data: script,
+      }));
+    },
+  },
+  methods: {
+    toggleMenu(name) {
+      this.activeMenu = this.activeMenu === name ? null : name;
+    },
+    getSymbolCheck(bool) {
+      return bool ? 'check' : 'remove';
+    },
+    onToggle() {
+      options.set('isApplied', !this.options.isApplied);
+    },
+    onManage() {
+      const url = browser.runtime.getURL(browser.runtime.getManifest().options_page);
+      // Firefox: browser.tabs.query cannot filter tabs by URLs with custom
+      // schemes like `moz-extension:`
+      browser.tabs.query({
+        currentWindow: true,
+        // url: url,
+      })
+      .then(tabs => {
+        const optionsTab = tabs.find(tab => {
+          const [path, qs] = tab.url.split('#');
+          return path === url && (!qs || qs.startsWith('confirm/'));
+        });
+        if (optionsTab) browser.tabs.update(optionsTab.id, { active: true });
+        else browser.tabs.create({ url });
+      });
+    },
+    onFindScripts(item) {
+      let domain;
+      if (item) {
+        domain = item.name;
+      } else {
+        const matches = this.store.currentTab.url.match(/:\/\/(?:www\.)?([^/]*)/);
+        domain = matches[1];
+      }
+      browser.tabs.create({
+        url: `https://greasyfork.org/scripts/search?q=${encodeURIComponent(domain)}`,
+      });
+    },
+    onCommand(item) {
+      browser.tabs.sendMessage(this.store.currentTab.id, {
+        cmd: 'Command',
+        data: item.name,
+      });
+    },
+    onToggleScript(item) {
+      sendMessage({
+        cmd: 'UpdateScriptInfo',
+        data: {
+          id: item.data.id,
+          enabled: !item.data.enabled,
+        },
+      })
+      .then(() => {
+        item.data.enabled = !item.data.enabled;
+        if (options.get('autoReload')) browser.tabs.reload(this.store.currentTab.id);
+      });
+    },
+  },
+};
+</script>

src/popup/views/app/index.html

@@ -1,50 +0,0 @@
-<div id="app">
-  <div class="logo" :class="{disabled:!options.isApplied}">
-    <img src="/public/images/icon128.png">
-  </div>
-  <div class="menu-item" :class="{disabled:!options.isApplied}" @click="onToggle">
-    <icon :name="getSymbolCheck(options.isApplied)"></icon>
-    <span v-text="options.isApplied ? i18n('menuScriptEnabled') : i18n('menuScriptDisabled')"></span>
-  </div>
-  <div class="menu">
-    <div class="menu-item" @click="onManage">
-      <icon name="cog"></icon>
-      <span v-text="i18n('menuDashboard')"></span>
-    </div>
-  </div>
-  <div class="menu menu-domains" v-show="domains.length" :class="{collapse:activeMenu!=='domains'}">
-    <div class="menu-item" @click="toggleMenu('domains')">
-      <icon name="search"></icon>
-      <icon name="more" class="icon-right icon-collapse"></icon>
-      <span v-text="i18n('menuFindScripts')"></span>
-    </div>
-    <div class="submenu">
-      <div class="menu-item" v-for="item in domains" @click="onFindScripts(item)">
-        <span v-text="item.name"></span>
-      </div>
-    </div>
-  </div>
-  <div class="menu menu-commands" v-show="commands.length" :class="{collapse:activeMenu!=='commands'}">
-    <div class="menu-item" @click="toggleMenu('commands')">
-      <icon name="more" class="icon-right icon-collapse"></icon>
-      <span v-text="i18n('menuCommands')"></span>
-    </div>
-    <div class="submenu">
-      <div class="menu-item" v-for="item in commands" @click="onCommand(item)">
-        <span v-text="item.name"></span>
-      </div>
-    </div>
-  </div>
-  <div class="menu menu-scripts" v-show="scripts.length" :class="{collapse:activeMenu!=='scripts'}">
-    <div class="menu-item" @click="toggleMenu('scripts')">
-      <icon name="more" class="icon-right icon-collapse"></icon>
-      <span v-text="i18n('menuMatchedScripts')"></span>
-    </div>
-    <div class="submenu">
-      <div class="menu-item" v-for="item in scripts" @click="onToggleScript(item)" :class="{disabled:!item.data.enabled}">
-        <icon :name="getSymbolCheck(item.data.enabled)" class="icon-right"></icon>
-        <span v-text="item.name"></span>
-      </div>
-    </div>
-  </div>
-</div>

src/popup/views/app/index.js

@@ -1,118 +0,0 @@
-var _ = require('src/common');
-var cache = require('src/cache');
-var Icon = require('../icon');
-var utils = require('../../utils');
-
-var options = {
-  isApplied: _.options.get('isApplied'),
-};
-_.options.hook(function (changes) {
-  if ('isApplied' in changes) {
-    options.isApplied = changes.isApplied;
-  }
-});
-
-module.exports = {
-  template: cache.get('./index.html'),
-  components: {
-    Icon: Icon,
-  },
-  data: function () {
-    return {
-      options: options,
-      activeMenu: 'scripts',
-      store: utils.store,
-      collapse: {
-        domains: true,
-        commands: true,
-        scripts: false,
-      },
-    };
-  },
-  computed: {
-    domains: function () {
-      return this.store.domains.map(function (item) {
-        return {
-          name: item,
-          data: item,
-        };
-      });
-    },
-    commands: function () {
-      return this.store.commands.map(function (item) {
-        return {
-          name: item[0],
-          data: item,
-        };
-      });
-    },
-    scripts: function () {
-      return this.store.scripts.map(function (script) {
-        return {
-          name: script.custom.name || _.getLocaleString(script.meta, 'name'),
-          data: script,
-        };
-      });
-    },
-  },
-  methods: {
-    toggleMenu: function (name) {
-      this.activeMenu = this.activeMenu === name ? null : name;
-    },
-    getSymbolCheck: function (bool) {
-      return bool ? 'check' : 'remove';
-    },
-    onToggle: function () {
-      _.options.set('isApplied', !this.options.isApplied);
-    },
-    onManage: function () {
-      var url = browser.runtime.getURL(browser.runtime.getManifest().options_page);
-      // Firefox: browser.tabs.query cannot filter tabs by URLs with custom
-      // schemes like `moz-extension:`
-      browser.tabs.query({
-        currentWindow: true,
-        // url: url,
-      })
-      .then(function (tabs) {
-        var tab = tabs.find(function (tab) {
-          var parts = tab.url.split('#');
-          return parts[0] === url && (!parts[1] || parts[1].startsWith('confirm/'));
-        });
-        if (tab) browser.tabs.update(tab.id, {active: true});
-        else browser.tabs.create({url: url});
-      });
-    },
-    onFindScripts: function (item) {
-      var domain;
-      if (item) {
-        domain = item.name;
-      } else {
-        var matches = this.store.currentTab.url.match(/:\/\/(?:www\.)?([^\/]*)/);
-        domain = matches[1];
-      }
-      browser.tabs.create({
-        url: 'https://greasyfork.org/scripts/search?q=' + encodeURIComponent(domain),
-      });
-    },
-    onCommand: function (item) {
-      browser.tabs.sendMessage(this.store.currentTab.id, {
-        cmd: 'Command',
-        data: item.name,
-      });
-    },
-    onToggleScript: function (item) {
-      var _this = this;
-      _.sendMessage({
-        cmd: 'UpdateScriptInfo',
-        data: {
-          id: item.data.id,
-          enabled: !item.data.enabled,
-        },
-      })
-      .then(function () {
-        item.data.enabled = !item.data.enabled;
-        _.options.get('autoReload') && browser.tabs.reload(_this.store.currentTab.id);
-      });
-    },
-  },
-};

src/popup/views/icon.vue

@@ -0,0 +1,14 @@
+<template>
+  <svg class="icon"><use :xlink:href="iconName" /></svg>
+</template>
+
+<script>
+export default {
+  props: ['name'],
+  computed: {
+    iconName() {
+      return `#${this.name}`;
+    },
+  },
+};
+</script>

src/popup/views/icon/index.html

@@ -1 +0,0 @@
-<svg class="icon"><use :xlink:href="iconName" /></svg>

src/popup/views/icon/index.js

@@ -1,11 +0,0 @@
-var cache = require('src/cache');
-
-module.exports = {
-  props: ['name'],
-  template: cache.get('./index.html'),
-  computed: {
-    iconName: function () {
-      return '#' + this.name;
-    },
-  },
-};

src/public/lib/CodeMirror/addon/comment/continuecomment.js

@@ -1,85 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  var modes = ["clike", "css", "javascript"];
-
-  for (var i = 0; i < modes.length; ++i)
-    CodeMirror.extendMode(modes[i], {blockCommentContinue: " * "});
-
-  function continueComment(cm) {
-    if (cm.getOption("disableInput")) return CodeMirror.Pass;
-    var ranges = cm.listSelections(), mode, inserts = [];
-    for (var i = 0; i < ranges.length; i++) {
-      var pos = ranges[i].head, token = cm.getTokenAt(pos);
-      if (token.type != "comment") return CodeMirror.Pass;
-      var modeHere = CodeMirror.innerMode(cm.getMode(), token.state).mode;
-      if (!mode) mode = modeHere;
-      else if (mode != modeHere) return CodeMirror.Pass;
-
-      var insert = null;
-      if (mode.blockCommentStart && mode.blockCommentContinue) {
-        var end = token.string.indexOf(mode.blockCommentEnd);
-        var full = cm.getRange(CodeMirror.Pos(pos.line, 0), CodeMirror.Pos(pos.line, token.end)), found;
-        if (end != -1 && end == token.string.length - mode.blockCommentEnd.length && pos.ch >= end) {
-          // Comment ended, don't continue it
-        } else if (token.string.indexOf(mode.blockCommentStart) == 0) {
-          insert = full.slice(0, token.start);
-          if (!/^\s*$/.test(insert)) {
-            insert = "";
-            for (var j = 0; j < token.start; ++j) insert += " ";
-          }
-        } else if ((found = full.indexOf(mode.blockCommentContinue)) != -1 &&
-                   found + mode.blockCommentContinue.length > token.start &&
-                   /^\s*$/.test(full.slice(0, found))) {
-          insert = full.slice(0, found);
-        }
-        if (insert != null) insert += mode.blockCommentContinue;
-      }
-      if (insert == null && mode.lineComment && continueLineCommentEnabled(cm)) {
-        var line = cm.getLine(pos.line), found = line.indexOf(mode.lineComment);
-        if (found > -1) {
-          insert = line.slice(0, found);
-          if (/\S/.test(insert)) insert = null;
-          else insert += mode.lineComment + line.slice(found + mode.lineComment.length).match(/^\s*/)[0];
-        }
-      }
-      if (insert == null) return CodeMirror.Pass;
-      inserts[i] = "\n" + insert;
-    }
-
-    cm.operation(function() {
-      for (var i = ranges.length - 1; i >= 0; i--)
-        cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+insert");
-    });
-  }
-
-  function continueLineCommentEnabled(cm) {
-    var opt = cm.getOption("continueComments");
-    if (opt && typeof opt == "object")
-      return opt.continueLineComment !== false;
-    return true;
-  }
-
-  CodeMirror.defineOption("continueComments", null, function(cm, val, prev) {
-    if (prev && prev != CodeMirror.Init)
-      cm.removeKeyMap("continueComment");
-    if (val) {
-      var key = "Enter";
-      if (typeof val == "string")
-        key = val;
-      else if (typeof val == "object" && val.key)
-        key = val.key;
-      var map = {name: "continueComment"};
-      map[key] = continueComment;
-      cm.addKeyMap(map);
-    }
-  });
-});

src/public/lib/CodeMirror/addon/edit/closebrackets.js

@@ -1,202 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  var defaults = {
-    pairs: "()[]{}''\"\"",
-    triples: "",
-    explode: "[]{}"
-  };
-
-  var Pos = CodeMirror.Pos;
-
-  CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
-    if (old && old != CodeMirror.Init) {
-      cm.removeKeyMap(keyMap);
-      cm.state.closeBrackets = null;
-    }
-    if (val) {
-      cm.state.closeBrackets = val;
-      cm.addKeyMap(keyMap);
-    }
-  });
-
-  function getOption(conf, name) {
-    if (name == "pairs" && typeof conf == "string") return conf;
-    if (typeof conf == "object" && conf[name] != null) return conf[name];
-    return defaults[name];
-  }
-
-  var bind = defaults.pairs + "`";
-  var keyMap = {Backspace: handleBackspace, Enter: handleEnter};
-  for (var i = 0; i < bind.length; i++)
-    keyMap["'" + bind.charAt(i) + "'"] = handler(bind.charAt(i));
-
-  function handler(ch) {
-    return function(cm) { return handleChar(cm, ch); };
-  }
-
-  function getConfig(cm) {
-    var deflt = cm.state.closeBrackets;
-    if (!deflt || deflt.override) return deflt;
-    var mode = cm.getModeAt(cm.getCursor());
-    return mode.closeBrackets || deflt;
-  }
-
-  function handleBackspace(cm) {
-    var conf = getConfig(cm);
-    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;
-
-    var pairs = getOption(conf, "pairs");
-    var ranges = cm.listSelections();
-    for (var i = 0; i < ranges.length; i++) {
-      if (!ranges[i].empty()) return CodeMirror.Pass;
-      var around = charsAround(cm, ranges[i].head);
-      if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
-    }
-    for (var i = ranges.length - 1; i >= 0; i--) {
-      var cur = ranges[i].head;
-      cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete");
-    }
-  }
-
-  function handleEnter(cm) {
-    var conf = getConfig(cm);
-    var explode = conf && getOption(conf, "explode");
-    if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass;
-
-    var ranges = cm.listSelections();
-    for (var i = 0; i < ranges.length; i++) {
-      if (!ranges[i].empty()) return CodeMirror.Pass;
-      var around = charsAround(cm, ranges[i].head);
-      if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass;
-    }
-    cm.operation(function() {
-      cm.replaceSelection("\n\n", null);
-      cm.execCommand("goCharLeft");
-      ranges = cm.listSelections();
-      for (var i = 0; i < ranges.length; i++) {
-        var line = ranges[i].head.line;
-        cm.indentLine(line, null, true);
-        cm.indentLine(line + 1, null, true);
-      }
-    });
-  }
-
-  function contractSelection(sel) {
-    var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0;
-    return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)),
-            head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))};
-  }
-
-  function handleChar(cm, ch) {
-    var conf = getConfig(cm);
-    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;
-
-    var pairs = getOption(conf, "pairs");
-    var pos = pairs.indexOf(ch);
-    if (pos == -1) return CodeMirror.Pass;
-    var triples = getOption(conf, "triples");
-
-    var identical = pairs.charAt(pos + 1) == ch;
-    var ranges = cm.listSelections();
-    var opening = pos % 2 == 0;
-
-    var type;
-    for (var i = 0; i < ranges.length; i++) {
-      var range = ranges[i], cur = range.head, curType;
-      var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1));
-      if (opening && !range.empty()) {
-        curType = "surround";
-      } else if ((identical || !opening) && next == ch) {
-        if (identical && stringStartsAfter(cm, cur))
-          curType = "both";
-        else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch)
-          curType = "skipThree";
-        else
-          curType = "skip";
-      } else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 &&
-                 cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch &&
-                 (cur.ch <= 2 || cm.getRange(Pos(cur.line, cur.ch - 3), Pos(cur.line, cur.ch - 2)) != ch)) {
-        curType = "addFour";
-      } else if (identical) {
-        if (!CodeMirror.isWordChar(next) && enteringString(cm, cur, ch)) curType = "both";
-        else return CodeMirror.Pass;
-      } else if (opening && (cm.getLine(cur.line).length == cur.ch ||
-                             isClosingBracket(next, pairs) ||
-                             /\s/.test(next))) {
-        curType = "both";
-      } else {
-        return CodeMirror.Pass;
-      }
-      if (!type) type = curType;
-      else if (type != curType) return CodeMirror.Pass;
-    }
-
-    var left = pos % 2 ? pairs.charAt(pos - 1) : ch;
-    var right = pos % 2 ? ch : pairs.charAt(pos + 1);
-    cm.operation(function() {
-      if (type == "skip") {
-        cm.execCommand("goCharRight");
-      } else if (type == "skipThree") {
-        for (var i = 0; i < 3; i++)
-          cm.execCommand("goCharRight");
-      } else if (type == "surround") {
-        var sels = cm.getSelections();
-        for (var i = 0; i < sels.length; i++)
-          sels[i] = left + sels[i] + right;
-        cm.replaceSelections(sels, "around");
-        sels = cm.listSelections().slice();
-        for (var i = 0; i < sels.length; i++)
-          sels[i] = contractSelection(sels[i]);
-        cm.setSelections(sels);
-      } else if (type == "both") {
-        cm.replaceSelection(left + right, null);
-        cm.triggerElectric(left + right);
-        cm.execCommand("goCharLeft");
-      } else if (type == "addFour") {
-        cm.replaceSelection(left + left + left + left, "before");
-        cm.execCommand("goCharRight");
-      }
-    });
-  }
-
-  function isClosingBracket(ch, pairs) {
-    var pos = pairs.lastIndexOf(ch);
-    return pos > -1 && pos % 2 == 1;
-  }
-
-  function charsAround(cm, pos) {
-    var str = cm.getRange(Pos(pos.line, pos.ch - 1),
-                          Pos(pos.line, pos.ch + 1));
-    return str.length == 2 ? str : null;
-  }
-
-  // Project the token type that will exists after the given char is
-  // typed, and use it to determine whether it would cause the start
-  // of a string token.
-  function enteringString(cm, pos, ch) {
-    var line = cm.getLine(pos.line);
-    var token = cm.getTokenAt(pos);
-    if (/\bstring2?\b/.test(token.type)) return false;
-    var stream = new CodeMirror.StringStream(line.slice(0, pos.ch) + ch + line.slice(pos.ch), 4);
-    stream.pos = stream.start = token.start;
-    for (;;) {
-      var type1 = cm.getMode().token(stream, token.state);
-      if (stream.pos >= pos.ch + 1) return /\bstring2?\b/.test(type1);
-      stream.start = stream.pos;
-    }
-  }
-
-  function stringStartsAfter(cm, pos) {
-    var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1))
-    return /\bstring/.test(token.type) && token.start == pos.ch
-  }
-});

src/public/lib/CodeMirror/addon/edit/matchbrackets.js

@@ -1,122 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  var ie_lt8 = /MSIE \d/.test(navigator.userAgent) &&
-    (document.documentMode == null || document.documentMode < 8);
-
-  var Pos = CodeMirror.Pos;
-
-  var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
-
-  function findMatchingBracket(cm, where, strict, config) {
-    var line = cm.getLineHandle(where.line), pos = where.ch - 1;
-    var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
-    if (!match) return null;
-    var dir = match.charAt(1) == ">" ? 1 : -1;
-    if (strict && (dir > 0) != (pos == where.ch)) return null;
-    var style = cm.getTokenTypeAt(Pos(where.line, pos + 1));
-
-    var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style || null, config);
-    if (found == null) return null;
-    return {from: Pos(where.line, pos), to: found && found.pos,
-            match: found && found.ch == match.charAt(0), forward: dir > 0};
-  }
-
-  // bracketRegex is used to specify which type of bracket to scan
-  // should be a regexp, e.g. /[[\]]/
-  //
-  // Note: If "where" is on an open bracket, then this bracket is ignored.
-  //
-  // Returns false when no bracket was found, null when it reached
-  // maxScanLines and gave up
-  function scanForBracket(cm, where, dir, style, config) {
-    var maxScanLen = (config && config.maxScanLineLength) || 10000;
-    var maxScanLines = (config && config.maxScanLines) || 1000;
-
-    var stack = [];
-    var re = config && config.bracketRegex ? config.bracketRegex : /[(){}[\]]/;
-    var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1)
-                          : Math.max(cm.firstLine() - 1, where.line - maxScanLines);
-    for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) {
-      var line = cm.getLine(lineNo);
-      if (!line) continue;
-      var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1;
-      if (line.length > maxScanLen) continue;
-      if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0);
-      for (; pos != end; pos += dir) {
-        var ch = line.charAt(pos);
-        if (re.test(ch) && (style === undefined || cm.getTokenTypeAt(Pos(lineNo, pos + 1)) == style)) {
-          var match = matching[ch];
-          if ((match.charAt(1) == ">") == (dir > 0)) stack.push(ch);
-          else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch};
-          else stack.pop();
-        }
-      }
-    }
-    return lineNo - dir == (dir > 0 ? cm.lastLine() : cm.firstLine()) ? false : null;
-  }
-
-  function matchBrackets(cm, autoclear, config) {
-    // Disable brace matching in long lines, since it'll cause hugely slow updates
-    var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000;
-    var marks = [], ranges = cm.listSelections();
-    for (var i = 0; i < ranges.length; i++) {
-      var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, false, config);
-      if (match && cm.getLine(match.from.line).length <= maxHighlightLen) {
-        var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
-        marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style}));
-        if (match.to && cm.getLine(match.to.line).length <= maxHighlightLen)
-          marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style}));
-      }
-    }
-
-    if (marks.length) {
-      // Kludge to work around the IE bug from issue #1193, where text
-      // input stops going to the textare whever this fires.
-      if (ie_lt8 && cm.state.focused) cm.focus();
-
-      var clear = function() {
-        cm.operation(function() {
-          for (var i = 0; i < marks.length; i++) marks[i].clear();
-        });
-      };
-      if (autoclear) setTimeout(clear, 800);
-      else return clear;
-    }
-  }
-
-  var currentlyHighlighted = null;
-  function doMatchBrackets(cm) {
-    cm.operation(function() {
-      if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;}
-      currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets);
-    });
-  }
-
-  CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) {
-    if (old && old != CodeMirror.Init) {
-      cm.off("cursorActivity", doMatchBrackets);
-      if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;}
-    }
-    if (val) {
-      cm.state.matchBrackets = typeof val == "object" ? val : {};
-      cm.on("cursorActivity", doMatchBrackets);
-    }
-  });
-
-  CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);});
-  CodeMirror.defineExtension("findMatchingBracket", function(pos, strict, config){
-    return findMatchingBracket(this, pos, strict, config);
-  });
-  CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){
-    return scanForBracket(this, pos, dir, style, config);
-  });
-});

src/public/lib/CodeMirror/addon/fold/brace-fold.js

@@ -1,105 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-CodeMirror.registerHelper("fold", "brace", function(cm, start) {
-  var line = start.line, lineText = cm.getLine(line);
-  var tokenType;
-
-  function findOpening(openCh) {
-    for (var at = start.ch, pass = 0;;) {
-      var found = at <= 0 ? -1 : lineText.lastIndexOf(openCh, at - 1);
-      if (found == -1) {
-        if (pass == 1) break;
-        pass = 1;
-        at = lineText.length;
-        continue;
-      }
-      if (pass == 1 && found < start.ch) break;
-      tokenType = cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1));
-      if (!/^(comment|string)/.test(tokenType)) return found + 1;
-      at = found - 1;
-    }
-  }
-
-  var startToken = "{", endToken = "}", startCh = findOpening("{");
-  if (startCh == null) {
-    startToken = "[", endToken = "]";
-    startCh = findOpening("[");
-  }
-
-  if (startCh == null) return;
-  var count = 1, lastLine = cm.lastLine(), end, endCh;
-  outer: for (var i = line; i <= lastLine; ++i) {
-    var text = cm.getLine(i), pos = i == line ? startCh : 0;
-    for (;;) {
-      var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
-      if (nextOpen < 0) nextOpen = text.length;
-      if (nextClose < 0) nextClose = text.length;
-      pos = Math.min(nextOpen, nextClose);
-      if (pos == text.length) break;
-      if (cm.getTokenTypeAt(CodeMirror.Pos(i, pos + 1)) == tokenType) {
-        if (pos == nextOpen) ++count;
-        else if (!--count) { end = i; endCh = pos; break outer; }
-      }
-      ++pos;
-    }
-  }
-  if (end == null || line == end && endCh == startCh) return;
-  return {from: CodeMirror.Pos(line, startCh),
-          to: CodeMirror.Pos(end, endCh)};
-});
-
-CodeMirror.registerHelper("fold", "import", function(cm, start) {
-  function hasImport(line) {
-    if (line < cm.firstLine() || line > cm.lastLine()) return null;
-    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
-    if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
-    if (start.type != "keyword" || start.string != "import") return null;
-    // Now find closing semicolon, return its position
-    for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {
-      var text = cm.getLine(i), semi = text.indexOf(";");
-      if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};
-    }
-  }
-
-  var startLine = start.line, has = hasImport(startLine), prev;
-  if (!has || hasImport(startLine - 1) || ((prev = hasImport(startLine - 2)) && prev.end.line == startLine - 1))
-    return null;
-  for (var end = has.end;;) {
-    var next = hasImport(end.line + 1);
-    if (next == null) break;
-    end = next.end;
-  }
-  return {from: cm.clipPos(CodeMirror.Pos(startLine, has.startCh + 1)), to: end};
-});
-
-CodeMirror.registerHelper("fold", "include", function(cm, start) {
-  function hasInclude(line) {
-    if (line < cm.firstLine() || line > cm.lastLine()) return null;
-    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
-    if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
-    if (start.type == "meta" && start.string.slice(0, 8) == "#include") return start.start + 8;
-  }
-
-  var startLine = start.line, has = hasInclude(startLine);
-  if (has == null || hasInclude(startLine - 1) != null) return null;
-  for (var end = startLine;;) {
-    var next = hasInclude(end + 1);
-    if (next == null) break;
-    ++end;
-  }
-  return {from: CodeMirror.Pos(startLine, has + 1),
-          to: cm.clipPos(CodeMirror.Pos(end))};
-});
-
-});

src/public/lib/CodeMirror/addon/fold/comment-fold.js

@@ -1,59 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-CodeMirror.registerGlobalHelper("fold", "comment", function(mode) {
-  return mode.blockCommentStart && mode.blockCommentEnd;
-}, function(cm, start) {
-  var mode = cm.getModeAt(start), startToken = mode.blockCommentStart, endToken = mode.blockCommentEnd;
-  if (!startToken || !endToken) return;
-  var line = start.line, lineText = cm.getLine(line);
-
-  var startCh;
-  for (var at = start.ch, pass = 0;;) {
-    var found = at <= 0 ? -1 : lineText.lastIndexOf(startToken, at - 1);
-    if (found == -1) {
-      if (pass == 1) return;
-      pass = 1;
-      at = lineText.length;
-      continue;
-    }
-    if (pass == 1 && found < start.ch) return;
-    if (/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1))) &&
-        (found == 0 || lineText.slice(found - endToken.length, found) == endToken ||
-         !/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found))))) {
-      startCh = found + startToken.length;
-      break;
-    }
-    at = found - 1;
-  }
-
-  var depth = 1, lastLine = cm.lastLine(), end, endCh;
-  outer: for (var i = line; i <= lastLine; ++i) {
-    var text = cm.getLine(i), pos = i == line ? startCh : 0;
-    for (;;) {
-      var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
-      if (nextOpen < 0) nextOpen = text.length;
-      if (nextClose < 0) nextClose = text.length;
-      pos = Math.min(nextOpen, nextClose);
-      if (pos == text.length) break;
-      if (pos == nextOpen) ++depth;
-      else if (!--depth) { end = i; endCh = pos; break outer; }
-      ++pos;
-    }
-  }
-  if (end == null || line == end && endCh == startCh) return;
-  return {from: CodeMirror.Pos(line, startCh),
-          to: CodeMirror.Pos(end, endCh)};
-});
-
-});

src/public/lib/CodeMirror/addon/fold/foldcode.js

@@ -1,150 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  function doFold(cm, pos, options, force) {
-    if (options && options.call) {
-      var finder = options;
-      options = null;
-    } else {
-      var finder = getOption(cm, options, "rangeFinder");
-    }
-    if (typeof pos == "number") pos = CodeMirror.Pos(pos, 0);
-    var minSize = getOption(cm, options, "minFoldSize");
-
-    function getRange(allowFolded) {
-      var range = finder(cm, pos);
-      if (!range || range.to.line - range.from.line < minSize) return null;
-      var marks = cm.findMarksAt(range.from);
-      for (var i = 0; i < marks.length; ++i) {
-        if (marks[i].__isFold && force !== "fold") {
-          if (!allowFolded) return null;
-          range.cleared = true;
-          marks[i].clear();
-        }
-      }
-      return range;
-    }
-
-    var range = getRange(true);
-    if (getOption(cm, options, "scanUp")) while (!range && pos.line > cm.firstLine()) {
-      pos = CodeMirror.Pos(pos.line - 1, 0);
-      range = getRange(false);
-    }
-    if (!range || range.cleared || force === "unfold") return;
-
-    var myWidget = makeWidget(cm, options);
-    CodeMirror.on(myWidget, "mousedown", function(e) {
-      myRange.clear();
-      CodeMirror.e_preventDefault(e);
-    });
-    var myRange = cm.markText(range.from, range.to, {
-      replacedWith: myWidget,
-      clearOnEnter: getOption(cm, options, "clearOnEnter"),
-      __isFold: true
-    });
-    myRange.on("clear", function(from, to) {
-      CodeMirror.signal(cm, "unfold", cm, from, to);
-    });
-    CodeMirror.signal(cm, "fold", cm, range.from, range.to);
-  }
-
-  function makeWidget(cm, options) {
-    var widget = getOption(cm, options, "widget");
-    if (typeof widget == "string") {
-      var text = document.createTextNode(widget);
-      widget = document.createElement("span");
-      widget.appendChild(text);
-      widget.className = "CodeMirror-foldmarker";
-    }
-    return widget;
-  }
-
-  // Clumsy backwards-compatible interface
-  CodeMirror.newFoldFunction = function(rangeFinder, widget) {
-    return function(cm, pos) { doFold(cm, pos, {rangeFinder: rangeFinder, widget: widget}); };
-  };
-
-  // New-style interface
-  CodeMirror.defineExtension("foldCode", function(pos, options, force) {
-    doFold(this, pos, options, force);
-  });
-
-  CodeMirror.defineExtension("isFolded", function(pos) {
-    var marks = this.findMarksAt(pos);
-    for (var i = 0; i < marks.length; ++i)
-      if (marks[i].__isFold) return true;
-  });
-
-  CodeMirror.commands.toggleFold = function(cm) {
-    cm.foldCode(cm.getCursor());
-  };
-  CodeMirror.commands.fold = function(cm) {
-    cm.foldCode(cm.getCursor(), null, "fold");
-  };
-  CodeMirror.commands.unfold = function(cm) {
-    cm.foldCode(cm.getCursor(), null, "unfold");
-  };
-  CodeMirror.commands.foldAll = function(cm) {
-    cm.operation(function() {
-      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
-        cm.foldCode(CodeMirror.Pos(i, 0), null, "fold");
-    });
-  };
-  CodeMirror.commands.unfoldAll = function(cm) {
-    cm.operation(function() {
-      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
-        cm.foldCode(CodeMirror.Pos(i, 0), null, "unfold");
-    });
-  };
-
-  CodeMirror.registerHelper("fold", "combine", function() {
-    var funcs = Array.prototype.slice.call(arguments, 0);
-    return function(cm, start) {
-      for (var i = 0; i < funcs.length; ++i) {
-        var found = funcs[i](cm, start);
-        if (found) return found;
-      }
-    };
-  });
-
-  CodeMirror.registerHelper("fold", "auto", function(cm, start) {
-    var helpers = cm.getHelpers(start, "fold");
-    for (var i = 0; i < helpers.length; i++) {
-      var cur = helpers[i](cm, start);
-      if (cur) return cur;
-    }
-  });
-
-  var defaultOptions = {
-    rangeFinder: CodeMirror.fold.auto,
-    widget: "\u2194",
-    minFoldSize: 0,
-    scanUp: false,
-    clearOnEnter: true
-  };
-
-  CodeMirror.defineOption("foldOptions", null);
-
-  function getOption(cm, options, name) {
-    if (options && options[name] !== undefined)
-      return options[name];
-    var editorOptions = cm.options.foldOptions;
-    if (editorOptions && editorOptions[name] !== undefined)
-      return editorOptions[name];
-    return defaultOptions[name];
-  }
-
-  CodeMirror.defineExtension("foldOption", function(options, name) {
-    return getOption(this, options, name);
-  });
-});

src/public/lib/CodeMirror/addon/fold/foldgutter.js

@@ -1,146 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"), require("./foldcode"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror", "./foldcode"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  CodeMirror.defineOption("foldGutter", false, function(cm, val, old) {
-    if (old && old != CodeMirror.Init) {
-      cm.clearGutter(cm.state.foldGutter.options.gutter);
-      cm.state.foldGutter = null;
-      cm.off("gutterClick", onGutterClick);
-      cm.off("change", onChange);
-      cm.off("viewportChange", onViewportChange);
-      cm.off("fold", onFold);
-      cm.off("unfold", onFold);
-      cm.off("swapDoc", onChange);
-    }
-    if (val) {
-      cm.state.foldGutter = new State(parseOptions(val));
-      updateInViewport(cm);
-      cm.on("gutterClick", onGutterClick);
-      cm.on("change", onChange);
-      cm.on("viewportChange", onViewportChange);
-      cm.on("fold", onFold);
-      cm.on("unfold", onFold);
-      cm.on("swapDoc", onChange);
-    }
-  });
-
-  var Pos = CodeMirror.Pos;
-
-  function State(options) {
-    this.options = options;
-    this.from = this.to = 0;
-  }
-
-  function parseOptions(opts) {
-    if (opts === true) opts = {};
-    if (opts.gutter == null) opts.gutter = "CodeMirror-foldgutter";
-    if (opts.indicatorOpen == null) opts.indicatorOpen = "CodeMirror-foldgutter-open";
-    if (opts.indicatorFolded == null) opts.indicatorFolded = "CodeMirror-foldgutter-folded";
-    return opts;
-  }
-
-  function isFolded(cm, line) {
-    var marks = cm.findMarks(Pos(line, 0), Pos(line + 1, 0));
-    for (var i = 0; i < marks.length; ++i)
-      if (marks[i].__isFold && marks[i].find().from.line == line) return marks[i];
-  }
-
-  function marker(spec) {
-    if (typeof spec == "string") {
-      var elt = document.createElement("div");
-      elt.className = spec + " CodeMirror-guttermarker-subtle";
-      return elt;
-    } else {
-      return spec.cloneNode(true);
-    }
-  }
-
-  function updateFoldInfo(cm, from, to) {
-    var opts = cm.state.foldGutter.options, cur = from;
-    var minSize = cm.foldOption(opts, "minFoldSize");
-    var func = cm.foldOption(opts, "rangeFinder");
-    cm.eachLine(from, to, function(line) {
-      var mark = null;
-      if (isFolded(cm, cur)) {
-        mark = marker(opts.indicatorFolded);
-      } else {
-        var pos = Pos(cur, 0);
-        var range = func && func(cm, pos);
-        if (range && range.to.line - range.from.line >= minSize)
-          mark = marker(opts.indicatorOpen);
-      }
-      cm.setGutterMarker(line, opts.gutter, mark);
-      ++cur;
-    });
-  }
-
-  function updateInViewport(cm) {
-    var vp = cm.getViewport(), state = cm.state.foldGutter;
-    if (!state) return;
-    cm.operation(function() {
-      updateFoldInfo(cm, vp.from, vp.to);
-    });
-    state.from = vp.from; state.to = vp.to;
-  }
-
-  function onGutterClick(cm, line, gutter) {
-    var state = cm.state.foldGutter;
-    if (!state) return;
-    var opts = state.options;
-    if (gutter != opts.gutter) return;
-    var folded = isFolded(cm, line);
-    if (folded) folded.clear();
-    else cm.foldCode(Pos(line, 0), opts.rangeFinder);
-  }
-
-  function onChange(cm) {
-    var state = cm.state.foldGutter;
-    if (!state) return;
-    var opts = state.options;
-    state.from = state.to = 0;
-    clearTimeout(state.changeUpdate);
-    state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);
-  }
-
-  function onViewportChange(cm) {
-    var state = cm.state.foldGutter;
-    if (!state) return;
-    var opts = state.options;
-    clearTimeout(state.changeUpdate);
-    state.changeUpdate = setTimeout(function() {
-      var vp = cm.getViewport();
-      if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
-        updateInViewport(cm);
-      } else {
-        cm.operation(function() {
-          if (vp.from < state.from) {
-            updateFoldInfo(cm, vp.from, state.from);
-            state.from = vp.from;
-          }
-          if (vp.to > state.to) {
-            updateFoldInfo(cm, state.to, vp.to);
-            state.to = vp.to;
-          }
-        });
-      }
-    }, opts.updateViewportTimeSpan || 400);
-  }
-
-  function onFold(cm, from) {
-    var state = cm.state.foldGutter;
-    if (!state) return;
-    var line = from.line;
-    if (line >= state.from && line < state.to)
-      updateFoldInfo(cm, line, line + 1);
-  }
-});

src/public/lib/CodeMirror/addon/search/match-highlighter.js

@@ -1,165 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-// Highlighting text that matches the selection
-//
-// Defines an option highlightSelectionMatches, which, when enabled,
-// will style strings that match the selection throughout the
-// document.
-//
-// The option can be set to true to simply enable it, or to a
-// {minChars, style, wordsOnly, showToken, delay} object to explicitly
-// configure it. minChars is the minimum amount of characters that should be
-// selected for the behavior to occur, and style is the token style to
-// apply to the matches. This will be prefixed by "cm-" to create an
-// actual CSS class name. If wordsOnly is enabled, the matches will be
-// highlighted only if the selected text is a word. showToken, when enabled,
-// will cause the current token to be highlighted when nothing is selected.
-// delay is used to specify how much time to wait, in milliseconds, before
-// highlighting the matches. If annotateScrollbar is enabled, the occurences
-// will be highlighted on the scrollbar via the matchesonscrollbar addon.
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"), require("./matchesonscrollbar"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror", "./matchesonscrollbar"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  var defaults = {
-    style: "matchhighlight",
-    minChars: 2,
-    delay: 100,
-    wordsOnly: false,
-    annotateScrollbar: false,
-    showToken: false,
-    trim: true
-  }
-
-  function State(options) {
-    this.options = {}
-    for (var name in defaults)
-      this.options[name] = (options && options.hasOwnProperty(name) ? options : defaults)[name]
-    this.overlay = this.timeout = null;
-    this.matchesonscroll = null;
-    this.active = false;
-  }
-
-  CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
-    if (old && old != CodeMirror.Init) {
-      removeOverlay(cm);
-      clearTimeout(cm.state.matchHighlighter.timeout);
-      cm.state.matchHighlighter = null;
-      cm.off("cursorActivity", cursorActivity);
-      cm.off("focus", onFocus)
-    }
-    if (val) {
-      var state = cm.state.matchHighlighter = new State(val);
-      if (cm.hasFocus()) {
-        state.active = true
-        highlightMatches(cm)
-      } else {
-        cm.on("focus", onFocus)
-      }
-      cm.on("cursorActivity", cursorActivity);
-    }
-  });
-
-  function cursorActivity(cm) {
-    var state = cm.state.matchHighlighter;
-    if (state.active || cm.hasFocus()) scheduleHighlight(cm, state)
-  }
-
-  function onFocus(cm) {
-    var state = cm.state.matchHighlighter
-    if (!state.active) {
-      state.active = true
-      scheduleHighlight(cm, state)
-    }
-  }
-
-  function scheduleHighlight(cm, state) {
-    clearTimeout(state.timeout);
-    state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
-  }
-
-  function addOverlay(cm, query, hasBoundary, style) {
-    var state = cm.state.matchHighlighter;
-    cm.addOverlay(state.overlay = makeOverlay(query, hasBoundary, style));
-    if (state.options.annotateScrollbar && cm.showMatchesOnScrollbar) {
-      var searchFor = hasBoundary ? new RegExp("\\b" + query + "\\b") : query;
-      state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, false,
-        {className: "CodeMirror-selection-highlight-scrollbar"});
-    }
-  }
-
-  function removeOverlay(cm) {
-    var state = cm.state.matchHighlighter;
-    if (state.overlay) {
-      cm.removeOverlay(state.overlay);
-      state.overlay = null;
-      if (state.matchesonscroll) {
-        state.matchesonscroll.clear();
-        state.matchesonscroll = null;
-      }
-    }
-  }
-
-  function highlightMatches(cm) {
-    cm.operation(function() {
-      var state = cm.state.matchHighlighter;
-      removeOverlay(cm);
-      if (!cm.somethingSelected() && state.options.showToken) {
-        var re = state.options.showToken === true ? /[\w$]/ : state.options.showToken;
-        var cur = cm.getCursor(), line = cm.getLine(cur.line), start = cur.ch, end = start;
-        while (start && re.test(line.charAt(start - 1))) --start;
-        while (end < line.length && re.test(line.charAt(end))) ++end;
-        if (start < end)
-          addOverlay(cm, line.slice(start, end), re, state.options.style);
-        return;
-      }
-      var from = cm.getCursor("from"), to = cm.getCursor("to");
-      if (from.line != to.line) return;
-      if (state.options.wordsOnly && !isWord(cm, from, to)) return;
-      var selection = cm.getRange(from, to)
-      if (state.options.trim) selection = selection.replace(/^\s+|\s+$/g, "")
-      if (selection.length >= state.options.minChars)
-        addOverlay(cm, selection, false, state.options.style);
-    });
-  }
-
-  function isWord(cm, from, to) {
-    var str = cm.getRange(from, to);
-    if (str.match(/^\w+$/) !== null) {
-        if (from.ch > 0) {
-            var pos = {line: from.line, ch: from.ch - 1};
-            var chr = cm.getRange(pos, from);
-            if (chr.match(/\W/) === null) return false;
-        }
-        if (to.ch < cm.getLine(from.line).length) {
-            var pos = {line: to.line, ch: to.ch + 1};
-            var chr = cm.getRange(to, pos);
-            if (chr.match(/\W/) === null) return false;
-        }
-        return true;
-    } else return false;
-  }
-
-  function boundariesAround(stream, re) {
-    return (!stream.start || !re.test(stream.string.charAt(stream.start - 1))) &&
-      (stream.pos == stream.string.length || !re.test(stream.string.charAt(stream.pos)));
-  }
-
-  function makeOverlay(query, hasBoundary, style) {
-    return {token: function(stream) {
-      if (stream.match(query) &&
-          (!hasBoundary || boundariesAround(stream, hasBoundary)))
-        return style;
-      stream.next();
-      stream.skipTo(query.charAt(0)) || stream.skipToEnd();
-    }};
-  }
-});

src/public/lib/CodeMirror/addon/search/search.js

@@ -1,252 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-// Define search commands. Depends on dialog.js or another
-// implementation of the openDialog method.
-
-// Replace works a little oddly -- it will do the replace on the next
-// Ctrl-G (or whatever is bound to findNext) press. You prevent a
-// replace by making sure the match is no longer selected when hitting
-// Ctrl-G.
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"), require("./searchcursor"), require("../dialog/dialog"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror", "./searchcursor", "../dialog/dialog"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  function searchOverlay(query, caseInsensitive) {
-    if (typeof query == "string")
-      query = new RegExp(query.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&"), caseInsensitive ? "gi" : "g");
-    else if (!query.global)
-      query = new RegExp(query.source, query.ignoreCase ? "gi" : "g");
-
-    return {token: function(stream) {
-      query.lastIndex = stream.pos;
-      var match = query.exec(stream.string);
-      if (match && match.index == stream.pos) {
-        stream.pos += match[0].length || 1;
-        return "searching";
-      } else if (match) {
-        stream.pos = match.index;
-      } else {
-        stream.skipToEnd();
-      }
-    }};
-  }
-
-  function SearchState() {
-    this.posFrom = this.posTo = this.lastQuery = this.query = null;
-    this.overlay = null;
-  }
-
-  function getSearchState(cm) {
-    return cm.state.search || (cm.state.search = new SearchState());
-  }
-
-  function queryCaseInsensitive(query) {
-    return typeof query == "string" && query == query.toLowerCase();
-  }
-
-  function getSearchCursor(cm, query, pos) {
-    // Heuristic: if the query string is all lowercase, do a case insensitive search.
-    return cm.getSearchCursor(query, pos, queryCaseInsensitive(query));
-  }
-
-  function persistentDialog(cm, text, deflt, onEnter, onKeyDown) {
-    cm.openDialog(text, onEnter, {
-      value: deflt,
-      selectValueOnOpen: true,
-      closeOnEnter: false,
-      onClose: function() { clearSearch(cm); },
-      onKeyDown: onKeyDown
-    });
-  }
-
-  function dialog(cm, text, shortText, deflt, f) {
-    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true});
-    else f(prompt(shortText, deflt));
-  }
-
-  function confirmDialog(cm, text, shortText, fs) {
-    if (cm.openConfirm) cm.openConfirm(text, fs);
-    else if (confirm(shortText)) fs[0]();
-  }
-
-  function parseString(string) {
-    return string.replace(/\\(.)/g, function(_, ch) {
-      if (ch == "n") return "\n"
-      if (ch == "r") return "\r"
-      return ch
-    })
-  }
-
-  function parseQuery(query) {
-    var isRE = query.match(/^\/(.*)\/([a-z]*)$/);
-    if (isRE) {
-      try { query = new RegExp(isRE[1], isRE[2].indexOf("i") == -1 ? "" : "i"); }
-      catch(e) {} // Not a regular expression after all, do a string search
-    } else {
-      query = parseString(query)
-    }
-    if (typeof query == "string" ? query == "" : query.test(""))
-      query = /x^/;
-    return query;
-  }
-
-  var queryDialog =
-    'Search: <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">(Use /re/ syntax for regexp search)</span>';
-
-  function startSearch(cm, state, query) {
-    state.queryText = query;
-    state.query = parseQuery(query);
-    cm.removeOverlay(state.overlay, queryCaseInsensitive(state.query));
-    state.overlay = searchOverlay(state.query, queryCaseInsensitive(state.query));
-    cm.addOverlay(state.overlay);
-    if (cm.showMatchesOnScrollbar) {
-      if (state.annotate) { state.annotate.clear(); state.annotate = null; }
-      state.annotate = cm.showMatchesOnScrollbar(state.query, queryCaseInsensitive(state.query));
-    }
-  }
-
-  function doSearch(cm, rev, persistent, immediate) {
-    var state = getSearchState(cm);
-    if (state.query) return findNext(cm, rev);
-    var q = cm.getSelection() || state.lastQuery;
-    if (persistent && cm.openDialog) {
-      var hiding = null
-      var searchNext = function(query, event) {
-        CodeMirror.e_stop(event);
-        if (!query) return;
-        if (query != state.queryText) {
-          startSearch(cm, state, query);
-          state.posFrom = state.posTo = cm.getCursor();
-        }
-        if (hiding) hiding.style.opacity = 1
-        findNext(cm, event.shiftKey, function(_, to) {
-          var dialog
-          if (to.line < 3 && document.querySelector &&
-              (dialog = cm.display.wrapper.querySelector(".CodeMirror-dialog")) &&
-              dialog.getBoundingClientRect().bottom - 4 > cm.cursorCoords(to, "window").top)
-            (hiding = dialog).style.opacity = .4
-        })
-      };
-      persistentDialog(cm, queryDialog, q, searchNext, function(event, query) {
-        var keyName = CodeMirror.keyName(event)
-        var cmd = CodeMirror.keyMap[cm.getOption("keyMap")][keyName]
-        if (!cmd) cmd = cm.getOption('extraKeys')[keyName]
-        if (cmd == "findNext" || cmd == "findPrev" ||
-          cmd == "findPersistentNext" || cmd == "findPersistentPrev") {
-          CodeMirror.e_stop(event);
-          startSearch(cm, getSearchState(cm), query);
-          cm.execCommand(cmd);
-        } else if (cmd == "find" || cmd == "findPersistent") {
-          CodeMirror.e_stop(event);
-          searchNext(query, event);
-        }
-      });
-      if (immediate && q) {
-        startSearch(cm, state, q);
-        findNext(cm, rev);
-      }
-    } else {
-      dialog(cm, queryDialog, "Search for:", q, function(query) {
-        if (query && !state.query) cm.operation(function() {
-          startSearch(cm, state, query);
-          state.posFrom = state.posTo = cm.getCursor();
-          findNext(cm, rev);
-        });
-      });
-    }
-  }
-
-  function findNext(cm, rev, callback) {cm.operation(function() {
-    var state = getSearchState(cm);
-    var cursor = getSearchCursor(cm, state.query, rev ? state.posFrom : state.posTo);
-    if (!cursor.find(rev)) {
-      cursor = getSearchCursor(cm, state.query, rev ? CodeMirror.Pos(cm.lastLine()) : CodeMirror.Pos(cm.firstLine(), 0));
-      if (!cursor.find(rev)) return;
-    }
-    cm.setSelection(cursor.from(), cursor.to());
-    cm.scrollIntoView({from: cursor.from(), to: cursor.to()}, 20);
-    state.posFrom = cursor.from(); state.posTo = cursor.to();
-    if (callback) callback(cursor.from(), cursor.to())
-  });}
-
-  function clearSearch(cm) {cm.operation(function() {
-    var state = getSearchState(cm);
-    state.lastQuery = state.query;
-    if (!state.query) return;
-    state.query = state.queryText = null;
-    cm.removeOverlay(state.overlay);
-    if (state.annotate) { state.annotate.clear(); state.annotate = null; }
-  });}
-
-  var replaceQueryDialog =
-    ' <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">(Use /re/ syntax for regexp search)</span>';
-  var replacementQueryDialog = 'With: <input type="text" style="width: 10em" class="CodeMirror-search-field"/>';
-  var doReplaceConfirm = "Replace? <button>Yes</button> <button>No</button> <button>All</button> <button>Stop</button>";
-
-  function replaceAll(cm, query, text) {
-    cm.operation(function() {
-      for (var cursor = getSearchCursor(cm, query); cursor.findNext();) {
-        if (typeof query != "string") {
-          var match = cm.getRange(cursor.from(), cursor.to()).match(query);
-          cursor.replace(text.replace(/\$(\d)/g, function(_, i) {return match[i];}));
-        } else cursor.replace(text);
-      }
-    });
-  }
-
-  function replace(cm, all) {
-    if (cm.getOption("readOnly")) return;
-    var query = cm.getSelection() || getSearchState(cm).lastQuery;
-    var dialogText = all ? "Replace all:" : "Replace:"
-    dialog(cm, dialogText + replaceQueryDialog, dialogText, query, function(query) {
-      if (!query) return;
-      query = parseQuery(query);
-      dialog(cm, replacementQueryDialog, "Replace with:", "", function(text) {
-        text = parseString(text)
-        if (all) {
-          replaceAll(cm, query, text)
-        } else {
-          clearSearch(cm);
-          var cursor = getSearchCursor(cm, query, cm.getCursor("from"));
-          var advance = function() {
-            var start = cursor.from(), match;
-            if (!(match = cursor.findNext())) {
-              cursor = getSearchCursor(cm, query);
-              if (!(match = cursor.findNext()) ||
-                  (start && cursor.from().line == start.line && cursor.from().ch == start.ch)) return;
-            }
-            cm.setSelection(cursor.from(), cursor.to());
-            cm.scrollIntoView({from: cursor.from(), to: cursor.to()});
-            confirmDialog(cm, doReplaceConfirm, "Replace?",
-                          [function() {doReplace(match);}, advance,
-                           function() {replaceAll(cm, query, text)}]);
-          };
-          var doReplace = function(match) {
-            cursor.replace(typeof query == "string" ? text :
-                           text.replace(/\$(\d)/g, function(_, i) {return match[i];}));
-            advance();
-          };
-          advance();
-        }
-      });
-    });
-  }
-
-  CodeMirror.commands.find = function(cm) {clearSearch(cm); doSearch(cm);};
-  CodeMirror.commands.findPersistent = function(cm) {clearSearch(cm); doSearch(cm, false, true);};
-  CodeMirror.commands.findPersistentNext = function(cm) {doSearch(cm, false, true, true);};
-  CodeMirror.commands.findPersistentPrev = function(cm) {doSearch(cm, true, true, true);};
-  CodeMirror.commands.findNext = doSearch;
-  CodeMirror.commands.findPrev = function(cm) {doSearch(cm, true);};
-  CodeMirror.commands.clearSearch = clearSearch;
-  CodeMirror.commands.replace = replace;
-  CodeMirror.commands.replaceAll = function(cm) {replace(cm, true);};
-});

src/public/lib/CodeMirror/addon/search/searchcursor.js

@@ -1,189 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-  var Pos = CodeMirror.Pos;
-
-  function SearchCursor(doc, query, pos, caseFold) {
-    this.atOccurrence = false; this.doc = doc;
-    if (caseFold == null && typeof query == "string") caseFold = false;
-
-    pos = pos ? doc.clipPos(pos) : Pos(0, 0);
-    this.pos = {from: pos, to: pos};
-
-    // The matches method is filled in based on the type of query.
-    // It takes a position and a direction, and returns an object
-    // describing the next occurrence of the query, or null if no
-    // more matches were found.
-    if (typeof query != "string") { // Regexp match
-      if (!query.global) query = new RegExp(query.source, query.ignoreCase ? "ig" : "g");
-      this.matches = function(reverse, pos) {
-        if (reverse) {
-          query.lastIndex = 0;
-          var line = doc.getLine(pos.line).slice(0, pos.ch), cutOff = 0, match, start;
-          for (;;) {
-            query.lastIndex = cutOff;
-            var newMatch = query.exec(line);
-            if (!newMatch) break;
-            match = newMatch;
-            start = match.index;
-            cutOff = match.index + (match[0].length || 1);
-            if (cutOff == line.length) break;
-          }
-          var matchLen = (match && match[0].length) || 0;
-          if (!matchLen) {
-            if (start == 0 && line.length == 0) {match = undefined;}
-            else if (start != doc.getLine(pos.line).length) {
-              matchLen++;
-            }
-          }
-        } else {
-          query.lastIndex = pos.ch;
-          var line = doc.getLine(pos.line), match = query.exec(line);
-          var matchLen = (match && match[0].length) || 0;
-          var start = match && match.index;
-          if (start + matchLen != line.length && !matchLen) matchLen = 1;
-        }
-        if (match && matchLen)
-          return {from: Pos(pos.line, start),
-                  to: Pos(pos.line, start + matchLen),
-                  match: match};
-      };
-    } else { // String query
-      var origQuery = query;
-      if (caseFold) query = query.toLowerCase();
-      var fold = caseFold ? function(str){return str.toLowerCase();} : function(str){return str;};
-      var target = query.split("\n");
-      // Different methods for single-line and multi-line queries
-      if (target.length == 1) {
-        if (!query.length) {
-          // Empty string would match anything and never progress, so
-          // we define it to match nothing instead.
-          this.matches = function() {};
-        } else {
-          this.matches = function(reverse, pos) {
-            if (reverse) {
-              var orig = doc.getLine(pos.line).slice(0, pos.ch), line = fold(orig);
-              var match = line.lastIndexOf(query);
-              if (match > -1) {
-                match = adjustPos(orig, line, match);
-                return {from: Pos(pos.line, match), to: Pos(pos.line, match + origQuery.length)};
-              }
-             } else {
-               var orig = doc.getLine(pos.line).slice(pos.ch), line = fold(orig);
-               var match = line.indexOf(query);
-               if (match > -1) {
-                 match = adjustPos(orig, line, match) + pos.ch;
-                 return {from: Pos(pos.line, match), to: Pos(pos.line, match + origQuery.length)};
-               }
-            }
-          };
-        }
-      } else {
-        var origTarget = origQuery.split("\n");
-        this.matches = function(reverse, pos) {
-          var last = target.length - 1;
-          if (reverse) {
-            if (pos.line - (target.length - 1) < doc.firstLine()) return;
-            if (fold(doc.getLine(pos.line).slice(0, origTarget[last].length)) != target[target.length - 1]) return;
-            var to = Pos(pos.line, origTarget[last].length);
-            for (var ln = pos.line - 1, i = last - 1; i >= 1; --i, --ln)
-              if (target[i] != fold(doc.getLine(ln))) return;
-            var line = doc.getLine(ln), cut = line.length - origTarget[0].length;
-            if (fold(line.slice(cut)) != target[0]) return;
-            return {from: Pos(ln, cut), to: to};
-          } else {
-            if (pos.line + (target.length - 1) > doc.lastLine()) return;
-            var line = doc.getLine(pos.line), cut = line.length - origTarget[0].length;
-            if (fold(line.slice(cut)) != target[0]) return;
-            var from = Pos(pos.line, cut);
-            for (var ln = pos.line + 1, i = 1; i < last; ++i, ++ln)
-              if (target[i] != fold(doc.getLine(ln))) return;
-            if (fold(doc.getLine(ln).slice(0, origTarget[last].length)) != target[last]) return;
-            return {from: from, to: Pos(ln, origTarget[last].length)};
-          }
-        };
-      }
-    }
-  }
-
-  SearchCursor.prototype = {
-    findNext: function() {return this.find(false);},
-    findPrevious: function() {return this.find(true);},
-
-    find: function(reverse) {
-      var self = this, pos = this.doc.clipPos(reverse ? this.pos.from : this.pos.to);
-      function savePosAndFail(line) {
-        var pos = Pos(line, 0);
-        self.pos = {from: pos, to: pos};
-        self.atOccurrence = false;
-        return false;
-      }
-
-      for (;;) {
-        if (this.pos = this.matches(reverse, pos)) {
-          this.atOccurrence = true;
-          return this.pos.match || true;
-        }
-        if (reverse) {
-          if (!pos.line) return savePosAndFail(0);
-          pos = Pos(pos.line-1, this.doc.getLine(pos.line-1).length);
-        }
-        else {
-          var maxLine = this.doc.lineCount();
-          if (pos.line == maxLine - 1) return savePosAndFail(maxLine);
-          pos = Pos(pos.line + 1, 0);
-        }
-      }
-    },
-
-    from: function() {if (this.atOccurrence) return this.pos.from;},
-    to: function() {if (this.atOccurrence) return this.pos.to;},
-
-    replace: function(newText, origin) {
-      if (!this.atOccurrence) return;
-      var lines = CodeMirror.splitLines(newText);
-      this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin);
-      this.pos.to = Pos(this.pos.from.line + lines.length - 1,
-                        lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0));
-    }
-  };
-
-  // Maps a position in a case-folded line back to a position in the original line
-  // (compensating for codepoints increasing in number during folding)
-  function adjustPos(orig, folded, pos) {
-    if (orig.length == folded.length) return pos;
-    for (var pos1 = Math.min(pos, orig.length);;) {
-      var len1 = orig.slice(0, pos1).toLowerCase().length;
-      if (len1 < pos) ++pos1;
-      else if (len1 > pos) --pos1;
-      else return pos1;
-    }
-  }
-
-  CodeMirror.defineExtension("getSearchCursor", function(query, pos, caseFold) {
-    return new SearchCursor(this.doc, query, pos, caseFold);
-  });
-  CodeMirror.defineDocExtension("getSearchCursor", function(query, pos, caseFold) {
-    return new SearchCursor(this, query, pos, caseFold);
-  });
-
-  CodeMirror.defineExtension("selectMatches", function(query, caseFold) {
-    var ranges = [];
-    var cur = this.getSearchCursor(query, this.getCursor("from"), caseFold);
-    while (cur.findNext()) {
-      if (CodeMirror.cmpPos(cur.to(), this.getCursor("to")) > 0) break;
-      ranges.push({anchor: cur.from(), head: cur.to()});
-    }
-    if (ranges.length)
-      this.setSelections(ranges, 0);
-  });
-});

src/public/lib/CodeMirror/addon/selection/active-line.js

@@ -1,72 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-  var WRAP_CLASS = "CodeMirror-activeline";
-  var BACK_CLASS = "CodeMirror-activeline-background";
-  var GUTT_CLASS = "CodeMirror-activeline-gutter";
-
-  CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) {
-    var prev = old == CodeMirror.Init ? false : old;
-    if (val == prev) return
-    if (prev) {
-      cm.off("beforeSelectionChange", selectionChange);
-      clearActiveLines(cm);
-      delete cm.state.activeLines;
-    }
-    if (val) {
-      cm.state.activeLines = [];
-      updateActiveLines(cm, cm.listSelections());
-      cm.on("beforeSelectionChange", selectionChange);
-    }
-  });
-
-  function clearActiveLines(cm) {
-    for (var i = 0; i < cm.state.activeLines.length; i++) {
-      cm.removeLineClass(cm.state.activeLines[i], "wrap", WRAP_CLASS);
-      cm.removeLineClass(cm.state.activeLines[i], "background", BACK_CLASS);
-      cm.removeLineClass(cm.state.activeLines[i], "gutter", GUTT_CLASS);
-    }
-  }
-
-  function sameArray(a, b) {
-    if (a.length != b.length) return false;
-    for (var i = 0; i < a.length; i++)
-      if (a[i] != b[i]) return false;
-    return true;
-  }
-
-  function updateActiveLines(cm, ranges) {
-    var active = [];
-    for (var i = 0; i < ranges.length; i++) {
-      var range = ranges[i];
-      var option = cm.getOption("styleActiveLine");
-      if (typeof option == "object" && option.nonEmpty ? range.anchor.line != range.head.line : !range.empty())
-        continue
-      var line = cm.getLineHandleVisualStart(range.head.line);
-      if (active[active.length - 1] != line) active.push(line);
-    }
-    if (sameArray(cm.state.activeLines, active)) return;
-    cm.operation(function() {
-      clearActiveLines(cm);
-      for (var i = 0; i < active.length; i++) {
-        cm.addLineClass(active[i], "wrap", WRAP_CLASS);
-        cm.addLineClass(active[i], "background", BACK_CLASS);
-        cm.addLineClass(active[i], "gutter", GUTT_CLASS);
-      }
-      cm.state.activeLines = active;
-    });
-  }
-
-  function selectionChange(cm, sel) {
-    updateActiveLines(cm, sel.ranges);
-  }
-});

src/public/lib/CodeMirror/lib/codemirror.css

@@ -1,341 +0,0 @@
-/* BASICS */
-
-.CodeMirror {
-  /* Set height, width, borders, and global font properties here */
-  font-family: monospace;
-  height: 300px;
-  color: black;
-}
-
-/* PADDING */
-
-.CodeMirror-lines {
-  padding: 4px 0; /* Vertical padding around content */
-}
-.CodeMirror pre {
-  padding: 0 4px; /* Horizontal padding of content */
-}
-
-.CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
-  background-color: white; /* The little square between H and V scrollbars */
-}
-
-/* GUTTER */
-
-.CodeMirror-gutters {
-  border-right: 1px solid #ddd;
-  background-color: #f7f7f7;
-  white-space: nowrap;
-}
-.CodeMirror-linenumbers {}
-.CodeMirror-linenumber {
-  padding: 0 3px 0 5px;
-  min-width: 20px;
-  text-align: right;
-  color: #999;
-  white-space: nowrap;
-}
-
-.CodeMirror-guttermarker { color: black; }
-.CodeMirror-guttermarker-subtle { color: #999; }
-
-/* CURSOR */
-
-.CodeMirror-cursor {
-  border-left: 1px solid black;
-  border-right: none;
-  width: 0;
-}
-/* Shown when moving in bi-directional text */
-.CodeMirror div.CodeMirror-secondarycursor {
-  border-left: 1px solid silver;
-}
-.cm-fat-cursor .CodeMirror-cursor {
-  width: auto;
-  border: 0 !important;
-  background: #7e7;
-}
-.cm-fat-cursor div.CodeMirror-cursors {
-  z-index: 1;
-}
-
-.cm-animate-fat-cursor {
-  width: auto;
-  border: 0;
-  -webkit-animation: blink 1.06s steps(1) infinite;
-  -moz-animation: blink 1.06s steps(1) infinite;
-  animation: blink 1.06s steps(1) infinite;
-  background-color: #7e7;
-}
-@-moz-keyframes blink {
-  0% {}
-  50% { background-color: transparent; }
-  100% {}
-}
-@-webkit-keyframes blink {
-  0% {}
-  50% { background-color: transparent; }
-  100% {}
-}
-@keyframes blink {
-  0% {}
-  50% { background-color: transparent; }
-  100% {}
-}
-
-/* Can style cursor different in overwrite (non-insert) mode */
-.CodeMirror-overwrite .CodeMirror-cursor {}
-
-.cm-tab { display: inline-block; text-decoration: inherit; }
-
-.CodeMirror-rulers {
-  position: absolute;
-  left: 0; right: 0; top: -50px; bottom: -20px;
-  overflow: hidden;
-}
-.CodeMirror-ruler {
-  border-left: 1px solid #ccc;
-  top: 0; bottom: 0;
-  position: absolute;
-}
-
-/* DEFAULT THEME */
-
-.cm-s-default .cm-header {color: blue;}
-.cm-s-default .cm-quote {color: #090;}
-.cm-negative {color: #d44;}
-.cm-positive {color: #292;}
-.cm-header, .cm-strong {font-weight: bold;}
-.cm-em {font-style: italic;}
-.cm-link {text-decoration: underline;}
-.cm-strikethrough {text-decoration: line-through;}
-
-.cm-s-default .cm-keyword {color: #708;}
-.cm-s-default .cm-atom {color: #219;}
-.cm-s-default .cm-number {color: #164;}
-.cm-s-default .cm-def {color: #00f;}
-.cm-s-default .cm-variable,
-.cm-s-default .cm-punctuation,
-.cm-s-default .cm-property,
-.cm-s-default .cm-operator {}
-.cm-s-default .cm-variable-2 {color: #05a;}
-.cm-s-default .cm-variable-3 {color: #085;}
-.cm-s-default .cm-comment {color: #a50;}
-.cm-s-default .cm-string {color: #a11;}
-.cm-s-default .cm-string-2 {color: #f50;}
-.cm-s-default .cm-meta {color: #555;}
-.cm-s-default .cm-qualifier {color: #555;}
-.cm-s-default .cm-builtin {color: #30a;}
-.cm-s-default .cm-bracket {color: #997;}
-.cm-s-default .cm-tag {color: #170;}
-.cm-s-default .cm-attribute {color: #00c;}
-.cm-s-default .cm-hr {color: #999;}
-.cm-s-default .cm-link {color: #00c;}
-
-.cm-s-default .cm-error {color: #f00;}
-.cm-invalidchar {color: #f00;}
-
-.CodeMirror-composing { border-bottom: 2px solid; }
-
-/* Default styles for common addons */
-
-div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
-div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
-.CodeMirror-matchingtag { background: rgba(255, 150, 0, .3); }
-.CodeMirror-activeline-background {background: #e8f2ff;}
-
-/* STOP */
-
-/* The rest of this file contains styles related to the mechanics of
-   the editor. You probably shouldn't touch them. */
-
-.CodeMirror {
-  position: relative;
-  overflow: hidden;
-  background: white;
-}
-
-.CodeMirror-scroll {
-  overflow: scroll !important; /* Things will break if this is overridden */
-  /* 30px is the magic margin used to hide the element's real scrollbars */
-  /* See overflow: hidden in .CodeMirror */
-  margin-bottom: -30px; margin-right: -30px;
-  padding-bottom: 30px;
-  height: 100%;
-  outline: none; /* Prevent dragging from highlighting the element */
-  position: relative;
-}
-.CodeMirror-sizer {
-  position: relative;
-  border-right: 30px solid transparent;
-}
-
-/* The fake, visible scrollbars. Used to force redraw during scrolling
-   before actual scrolling happens, thus preventing shaking and
-   flickering artifacts. */
-.CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
-  position: absolute;
-  z-index: 6;
-  display: none;
-}
-.CodeMirror-vscrollbar {
-  right: 0; top: 0;
-  overflow-x: hidden;
-  overflow-y: scroll;
-}
-.CodeMirror-hscrollbar {
-  bottom: 0; left: 0;
-  overflow-y: hidden;
-  overflow-x: scroll;
-}
-.CodeMirror-scrollbar-filler {
-  right: 0; bottom: 0;
-}
-.CodeMirror-gutter-filler {
-  left: 0; bottom: 0;
-}
-
-.CodeMirror-gutters {
-  position: absolute; left: 0; top: 0;
-  min-height: 100%;
-  z-index: 3;
-}
-.CodeMirror-gutter {
-  white-space: normal;
-  height: 100%;
-  display: inline-block;
-  vertical-align: top;
-  margin-bottom: -30px;
-}
-.CodeMirror-gutter-wrapper {
-  position: absolute;
-  z-index: 4;
-  background: none !important;
-  border: none !important;
-}
-.CodeMirror-gutter-background {
-  position: absolute;
-  top: 0; bottom: 0;
-  z-index: 4;
-}
-.CodeMirror-gutter-elt {
-  position: absolute;
-  cursor: default;
-  z-index: 4;
-}
-.CodeMirror-gutter-wrapper {
-  -webkit-user-select: none;
-  -moz-user-select: none;
-  user-select: none;
-}
-
-.CodeMirror-lines {
-  cursor: text;
-  min-height: 1px; /* prevents collapsing before first draw */
-}
-.CodeMirror pre {
-  /* Reset some styles that the rest of the page might have set */
-  -moz-border-radius: 0; -webkit-border-radius: 0; border-radius: 0;
-  border-width: 0;
-  background: transparent;
-  font-family: inherit;
-  font-size: inherit;
-  margin: 0;
-  white-space: pre;
-  word-wrap: normal;
-  line-height: inherit;
-  color: inherit;
-  z-index: 2;
-  position: relative;
-  overflow: visible;
-  -webkit-tap-highlight-color: transparent;
-  -webkit-font-variant-ligatures: contextual;
-  font-variant-ligatures: contextual;
-}
-.CodeMirror-wrap pre {
-  word-wrap: break-word;
-  white-space: pre-wrap;
-  word-break: normal;
-}
-
-.CodeMirror-linebackground {
-  position: absolute;
-  left: 0; right: 0; top: 0; bottom: 0;
-  z-index: 0;
-}
-
-.CodeMirror-linewidget {
-  position: relative;
-  z-index: 2;
-  overflow: auto;
-}
-
-.CodeMirror-widget {}
-
-.CodeMirror-code {
-  outline: none;
-}
-
-/* Force content-box sizing for the elements where we expect it */
-.CodeMirror-scroll,
-.CodeMirror-sizer,
-.CodeMirror-gutter,
-.CodeMirror-gutters,
-.CodeMirror-linenumber {
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
-}
-
-.CodeMirror-measure {
-  position: absolute;
-  width: 100%;
-  height: 0;
-  overflow: hidden;
-  visibility: hidden;
-}
-
-.CodeMirror-cursor {
-  position: absolute;
-  pointer-events: none;
-}
-.CodeMirror-measure pre { position: static; }
-
-div.CodeMirror-cursors {
-  visibility: hidden;
-  position: relative;
-  z-index: 3;
-}
-div.CodeMirror-dragcursors {
-  visibility: visible;
-}
-
-.CodeMirror-focused div.CodeMirror-cursors {
-  visibility: visible;
-}
-
-.CodeMirror-selected { background: #d9d9d9; }
-.CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; }
-.CodeMirror-crosshair { cursor: crosshair; }
-.CodeMirror-line::selection, .CodeMirror-line > span::selection, .CodeMirror-line > span > span::selection { background: #d7d4f0; }
-.CodeMirror-line::-moz-selection, .CodeMirror-line > span::-moz-selection, .CodeMirror-line > span > span::-moz-selection { background: #d7d4f0; }
-
-.cm-searching {
-  background: #ffa;
-  background: rgba(255, 255, 0, .4);
-}
-
-/* Used to force a border model for a node */
-.cm-force-border { padding-right: .1px; }
-
-@media print {
-  /* Hide the cursor when printing */
-  .CodeMirror div.CodeMirror-cursors {
-    visibility: hidden;
-  }
-}
-
-/* See issue #2901 */
-.cm-tab-wrap-hack:after { content: ''; }
-
-/* Help users use markselection to safely style text background */
-span.CodeMirror-selectedtext { background: none; }

src/public/lib/CodeMirror/lib/codemirror.js

@@ -1,9113 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-// This is CodeMirror (http://codemirror.net), a code editor
-// implemented in JavaScript on top of the browser's DOM.
-//
-// You can find some technical background for some of the code below
-// at http://marijnhaverbeke.nl/blog/#cm-internals .
-
-(function (global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
-  typeof define === 'function' && define.amd ? define(factory) :
-  (global.CodeMirror = factory());
-}(this, (function () { 'use strict';
-
-// Kludges for bugs and behavior differences that can't be feature
-// detected are enabled based on userAgent etc sniffing.
-var userAgent = navigator.userAgent
-var platform = navigator.platform
-
-var gecko = /gecko\/\d/i.test(userAgent)
-var ie_upto10 = /MSIE \d/.test(userAgent)
-var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent)
-var ie = ie_upto10 || ie_11up
-var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1])
-var webkit = /WebKit\//.test(userAgent)
-var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent)
-var chrome = /Chrome\//.test(userAgent)
-var presto = /Opera\//.test(userAgent)
-var safari = /Apple Computer/.test(navigator.vendor)
-var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent)
-var phantom = /PhantomJS/.test(userAgent)
-
-var ios = /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent)
-// This is woefully incomplete. Suggestions for alternative methods welcome.
-var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent)
-var mac = ios || /Mac/.test(platform)
-var chromeOS = /\bCrOS\b/.test(userAgent)
-var windows = /win/i.test(platform)
-
-var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/)
-if (presto_version) { presto_version = Number(presto_version[1]) }
-if (presto_version && presto_version >= 15) { presto = false; webkit = true }
-// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
-var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11))
-var captureRightClick = gecko || (ie && ie_version >= 9)
-
-function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }
-
-var rmClass = function(node, cls) {
-  var current = node.className
-  var match = classTest(cls).exec(current)
-  if (match) {
-    var after = current.slice(match.index + match[0].length)
-    node.className = current.slice(0, match.index) + (after ? match[1] + after : "")
-  }
-}
-
-function removeChildren(e) {
-  for (var count = e.childNodes.length; count > 0; --count)
-    { e.removeChild(e.firstChild) }
-  return e
-}
-
-function removeChildrenAndAdd(parent, e) {
-  return removeChildren(parent).appendChild(e)
-}
-
-function elt(tag, content, className, style) {
-  var e = document.createElement(tag)
-  if (className) { e.className = className }
-  if (style) { e.style.cssText = style }
-  if (typeof content == "string") { e.appendChild(document.createTextNode(content)) }
-  else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]) } }
-  return e
-}
-
-var range
-if (document.createRange) { range = function(node, start, end, endNode) {
-  var r = document.createRange()
-  r.setEnd(endNode || node, end)
-  r.setStart(node, start)
-  return r
-} }
-else { range = function(node, start, end) {
-  var r = document.body.createTextRange()
-  try { r.moveToElementText(node.parentNode) }
-  catch(e) { return r }
-  r.collapse(true)
-  r.moveEnd("character", end)
-  r.moveStart("character", start)
-  return r
-} }
-
-function contains(parent, child) {
-  if (child.nodeType == 3) // Android browser always returns false when child is a textnode
-    { child = child.parentNode }
-  if (parent.contains)
-    { return parent.contains(child) }
-  do {
-    if (child.nodeType == 11) { child = child.host }
-    if (child == parent) { return true }
-  } while (child = child.parentNode)
-}
-
-function activeElt() {
-  // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement.
-  // IE < 10 will throw when accessed while the page is loading or in an iframe.
-  // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.
-  var activeElement
-  try {
-    activeElement = document.activeElement
-  } catch(e) {
-    activeElement = document.body || null
-  }
-  while (activeElement && activeElement.root && activeElement.root.activeElement)
-    { activeElement = activeElement.root.activeElement }
-  return activeElement
-}
-
-function addClass(node, cls) {
-  var current = node.className
-  if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls }
-}
-function joinClasses(a, b) {
-  var as = a.split(" ")
-  for (var i = 0; i < as.length; i++)
-    { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i] } }
-  return b
-}
-
-var selectInput = function(node) { node.select() }
-if (ios) // Mobile Safari apparently has a bug where select() is broken.
-  { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } }
-else if (ie) // Suppress mysterious IE10 errors
-  { selectInput = function(node) { try { node.select() } catch(_e) {} } }
-
-function bind(f) {
-  var args = Array.prototype.slice.call(arguments, 1)
-  return function(){return f.apply(null, args)}
-}
-
-function copyObj(obj, target, overwrite) {
-  if (!target) { target = {} }
-  for (var prop in obj)
-    { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
-      { target[prop] = obj[prop] } }
-  return target
-}
-
-// Counts the column offset in a string, taking tabs into account.
-// Used mostly to find indentation.
-function countColumn(string, end, tabSize, startIndex, startValue) {
-  if (end == null) {
-    end = string.search(/[^\s\u00a0]/)
-    if (end == -1) { end = string.length }
-  }
-  for (var i = startIndex || 0, n = startValue || 0;;) {
-    var nextTab = string.indexOf("\t", i)
-    if (nextTab < 0 || nextTab >= end)
-      { return n + (end - i) }
-    n += nextTab - i
-    n += tabSize - (n % tabSize)
-    i = nextTab + 1
-  }
-}
-
-function Delayed() {this.id = null}
-Delayed.prototype.set = function(ms, f) {
-  clearTimeout(this.id)
-  this.id = setTimeout(f, ms)
-}
-
-function indexOf(array, elt) {
-  for (var i = 0; i < array.length; ++i)
-    { if (array[i] == elt) { return i } }
-  return -1
-}
-
-// Number of pixels added to scroller and sizer to hide scrollbar
-var scrollerGap = 30
-
-// Returned or thrown by various protocols to signal 'I'm not
-// handling this'.
-var Pass = {toString: function(){return "CodeMirror.Pass"}}
-
-// Reused option objects for setSelection & friends
-var sel_dontScroll = {scroll: false};
-var sel_mouse = {origin: "*mouse"};
-var sel_move = {origin: "+move"};
-// The inverse of countColumn -- find the offset that corresponds to
-// a particular column.
-function findColumn(string, goal, tabSize) {
-  for (var pos = 0, col = 0;;) {
-    var nextTab = string.indexOf("\t", pos)
-    if (nextTab == -1) { nextTab = string.length }
-    var skipped = nextTab - pos
-    if (nextTab == string.length || col + skipped >= goal)
-      { return pos + Math.min(skipped, goal - col) }
-    col += nextTab - pos
-    col += tabSize - (col % tabSize)
-    pos = nextTab + 1
-    if (col >= goal) { return pos }
-  }
-}
-
-var spaceStrs = [""]
-function spaceStr(n) {
-  while (spaceStrs.length <= n)
-    { spaceStrs.push(lst(spaceStrs) + " ") }
-  return spaceStrs[n]
-}
-
-function lst(arr) { return arr[arr.length-1] }
-
-function map(array, f) {
-  var out = []
-  for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i) }
-  return out
-}
-
-function insertSorted(array, value, score) {
-  var pos = 0, priority = score(value)
-  while (pos < array.length && score(array[pos]) <= priority) { pos++ }
-  array.splice(pos, 0, value)
-}
-
-function nothing() {}
-
-function createObj(base, props) {
-  var inst
-  if (Object.create) {
-    inst = Object.create(base)
-  } else {
-    nothing.prototype = base
-    inst = new nothing()
-  }
-  if (props) { copyObj(props, inst) }
-  return inst
-}
-
-var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/
-function isWordCharBasic(ch) {
-  return /\w/.test(ch) || ch > "\x80" &&
-    (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))
-}
-function isWordChar(ch, helper) {
-  if (!helper) { return isWordCharBasic(ch) }
-  if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true }
-  return helper.test(ch)
-}
-
-function isEmpty(obj) {
-  for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }
-  return true
-}
-
-// Extending unicode characters. A series of a non-extending char +
-// any number of extending chars is treated as a single unit as far
-// as editing and measuring is concerned. This is not fully correct,
-// since some scripts/fonts/browsers also treat other configurations
-// of code points as a group.
-var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/
-function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }
-
-// The display handles the DOM integration, both for input reading
-// and content drawing. It holds references to DOM nodes and
-// display-related state.
-
-function Display(place, doc, input) {
-  var d = this
-  this.input = input
-
-  // Covers bottom-right square when both scrollbars are present.
-  d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler")
-  d.scrollbarFiller.setAttribute("cm-not-content", "true")
-  // Covers bottom of gutter when coverGutterNextToScrollbar is on
-  // and h scrollbar is present.
-  d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler")
-  d.gutterFiller.setAttribute("cm-not-content", "true")
-  // Will contain the actual code, positioned to cover the viewport.
-  d.lineDiv = elt("div", null, "CodeMirror-code")
-  // Elements are added to these to represent selection and cursors.
-  d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1")
-  d.cursorDiv = elt("div", null, "CodeMirror-cursors")
-  // A visibility: hidden element used to find the size of things.
-  d.measure = elt("div", null, "CodeMirror-measure")
-  // When lines outside of the viewport are measured, they are drawn in this.
-  d.lineMeasure = elt("div", null, "CodeMirror-measure")
-  // Wraps everything that needs to exist inside the vertically-padded coordinate system
-  d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
-                    null, "position: relative; outline: none")
-  // Moved around its parent to cover visible view.
-  d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative")
-  // Set to the height of the document, allowing scrolling.
-  d.sizer = elt("div", [d.mover], "CodeMirror-sizer")
-  d.sizerWidth = null
-  // Behavior of elts with overflow: auto and padding is
-  // inconsistent across browsers. This is used to ensure the
-  // scrollable area is big enough.
-  d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;")
-  // Will contain the gutters, if any.
-  d.gutters = elt("div", null, "CodeMirror-gutters")
-  d.lineGutter = null
-  // Actual scrollable element.
-  d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll")
-  d.scroller.setAttribute("tabIndex", "-1")
-  // The element in which the editor lives.
-  d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror")
-
-  // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
-  if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 }
-  if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true }
-
-  if (place) {
-    if (place.appendChild) { place.appendChild(d.wrapper) }
-    else { place(d.wrapper) }
-  }
-
-  // Current rendered range (may be bigger than the view window).
-  d.viewFrom = d.viewTo = doc.first
-  d.reportedViewFrom = d.reportedViewTo = doc.first
-  // Information about the rendered lines.
-  d.view = []
-  d.renderedView = null
-  // Holds info about a single rendered line when it was rendered
-  // for measurement, while not in view.
-  d.externalMeasured = null
-  // Empty space (in pixels) above the view
-  d.viewOffset = 0
-  d.lastWrapHeight = d.lastWrapWidth = 0
-  d.updateLineNumbers = null
-
-  d.nativeBarWidth = d.barHeight = d.barWidth = 0
-  d.scrollbarsClipped = false
-
-  // Used to only resize the line number gutter when necessary (when
-  // the amount of lines crosses a boundary that makes its width change)
-  d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null
-  // Set to true when a non-horizontal-scrolling line widget is
-  // added. As an optimization, line widget aligning is skipped when
-  // this is false.
-  d.alignWidgets = false
-
-  d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null
-
-  // Tracks the maximum line length so that the horizontal scrollbar
-  // can be kept static when scrolling.
-  d.maxLine = null
-  d.maxLineLength = 0
-  d.maxLineChanged = false
-
-  // Used for measuring wheel scrolling granularity
-  d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null
-
-  // True when shift is held down.
-  d.shift = false
-
-  // Used to track whether anything happened since the context menu
-  // was opened.
-  d.selForContextMenu = null
-
-  d.activeTouch = null
-
-  input.init(d)
-}
-
-// Find the line object corresponding to the given line number.
-function getLine(doc, n) {
-  n -= doc.first
-  if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") }
-  var chunk = doc
-  while (!chunk.lines) {
-    for (var i = 0;; ++i) {
-      var child = chunk.children[i], sz = child.chunkSize()
-      if (n < sz) { chunk = child; break }
-      n -= sz
-    }
-  }
-  return chunk.lines[n]
-}
-
-// Get the part of a document between two positions, as an array of
-// strings.
-function getBetween(doc, start, end) {
-  var out = [], n = start.line
-  doc.iter(start.line, end.line + 1, function (line) {
-    var text = line.text
-    if (n == end.line) { text = text.slice(0, end.ch) }
-    if (n == start.line) { text = text.slice(start.ch) }
-    out.push(text)
-    ++n
-  })
-  return out
-}
-// Get the lines between from and to, as array of strings.
-function getLines(doc, from, to) {
-  var out = []
-  doc.iter(from, to, function (line) { out.push(line.text) }) // iter aborts when callback returns truthy value
-  return out
-}
-
-// Update the height of a line, propagating the height change
-// upwards to parent nodes.
-function updateLineHeight(line, height) {
-  var diff = height - line.height
-  if (diff) { for (var n = line; n; n = n.parent) { n.height += diff } }
-}
-
-// Given a line object, find its line number by walking up through
-// its parent links.
-function lineNo(line) {
-  if (line.parent == null) { return null }
-  var cur = line.parent, no = indexOf(cur.lines, line)
-  for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
-    for (var i = 0;; ++i) {
-      if (chunk.children[i] == cur) { break }
-      no += chunk.children[i].chunkSize()
-    }
-  }
-  return no + cur.first
-}
-
-// Find the line at the given vertical position, using the height
-// information in the document tree.
-function lineAtHeight(chunk, h) {
-  var n = chunk.first
-  outer: do {
-    for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {
-      var child = chunk.children[i$1], ch = child.height
-      if (h < ch) { chunk = child; continue outer }
-      h -= ch
-      n += child.chunkSize()
-    }
-    return n
-  } while (!chunk.lines)
-  var i = 0
-  for (; i < chunk.lines.length; ++i) {
-    var line = chunk.lines[i], lh = line.height
-    if (h < lh) { break }
-    h -= lh
-  }
-  return n + i
-}
-
-function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}
-
-function lineNumberFor(options, i) {
-  return String(options.lineNumberFormatter(i + options.firstLineNumber))
-}
-
-// A Pos instance represents a position within the text.
-function Pos (line, ch) {
-  if (!(this instanceof Pos)) { return new Pos(line, ch) }
-  this.line = line; this.ch = ch
-}
-
-// Compare two positions, return 0 if they are the same, a negative
-// number when a is less, and a positive number otherwise.
-function cmp(a, b) { return a.line - b.line || a.ch - b.ch }
-
-function copyPos(x) {return Pos(x.line, x.ch)}
-function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }
-function minPos(a, b) { return cmp(a, b) < 0 ? a : b }
-
-// Most of the external API clips given positions to make sure they
-// actually exist within the document.
-function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}
-function clipPos(doc, pos) {
-  if (pos.line < doc.first) { return Pos(doc.first, 0) }
-  var last = doc.first + doc.size - 1
-  if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }
-  return clipToLen(pos, getLine(doc, pos.line).text.length)
-}
-function clipToLen(pos, linelen) {
-  var ch = pos.ch
-  if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }
-  else if (ch < 0) { return Pos(pos.line, 0) }
-  else { return pos }
-}
-function clipPosArray(doc, array) {
-  var out = []
-  for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]) }
-  return out
-}
-
-// Optimize some code when these features are not used.
-var sawReadOnlySpans = false;
-var sawCollapsedSpans = false;
-function seeReadOnlySpans() {
-  sawReadOnlySpans = true
-}
-
-function seeCollapsedSpans() {
-  sawCollapsedSpans = true
-}
-
-// TEXTMARKER SPANS
-
-function MarkedSpan(marker, from, to) {
-  this.marker = marker
-  this.from = from; this.to = to
-}
-
-// Search an array of spans for a span matching the given marker.
-function getMarkedSpanFor(spans, marker) {
-  if (spans) { for (var i = 0; i < spans.length; ++i) {
-    var span = spans[i]
-    if (span.marker == marker) { return span }
-  } }
-}
-// Remove a span from an array, returning undefined if no spans are
-// left (we don't store arrays for lines without spans).
-function removeMarkedSpan(spans, span) {
-  var r
-  for (var i = 0; i < spans.length; ++i)
-    { if (spans[i] != span) { (r || (r = [])).push(spans[i]) } }
-  return r
-}
-// Add a span to a line.
-function addMarkedSpan(line, span) {
-  line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]
-  span.marker.attachLine(line)
-}
-
-// Used for the algorithm that adjusts markers for a change in the
-// document. These functions cut an array of spans at a given
-// character position, returning an array of remaining chunks (or
-// undefined if nothing remains).
-function markedSpansBefore(old, startCh, isInsert) {
-  var nw
-  if (old) { for (var i = 0; i < old.length; ++i) {
-    var span = old[i], marker = span.marker
-    var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh)
-    if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
-      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)
-      ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to))
-    }
-  } }
-  return nw
-}
-function markedSpansAfter(old, endCh, isInsert) {
-  var nw
-  if (old) { for (var i = 0; i < old.length; ++i) {
-    var span = old[i], marker = span.marker
-    var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh)
-    if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
-      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)
-      ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
-                                            span.to == null ? null : span.to - endCh))
-    }
-  } }
-  return nw
-}
-
-// Given a change object, compute the new set of marker spans that
-// cover the line in which the change took place. Removes spans
-// entirely within the change, reconnects spans belonging to the
-// same marker that appear on both sides of the change, and cuts off
-// spans partially within the change. Returns an array of span
-// arrays with one element for each line in (after) the change.
-function stretchSpansOverChange(doc, change) {
-  if (change.full) { return null }
-  var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans
-  var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans
-  if (!oldFirst && !oldLast) { return null }
-
-  var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0
-  // Get the spans that 'stick out' on both sides
-  var first = markedSpansBefore(oldFirst, startCh, isInsert)
-  var last = markedSpansAfter(oldLast, endCh, isInsert)
-
-  // Next, merge those two ends
-  var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0)
-  if (first) {
-    // Fix up .to properties of first
-    for (var i = 0; i < first.length; ++i) {
-      var span = first[i]
-      if (span.to == null) {
-        var found = getMarkedSpanFor(last, span.marker)
-        if (!found) { span.to = startCh }
-        else if (sameLine) { span.to = found.to == null ? null : found.to + offset }
-      }
-    }
-  }
-  if (last) {
-    // Fix up .from in last (or move them into first in case of sameLine)
-    for (var i$1 = 0; i$1 < last.length; ++i$1) {
-      var span$1 = last[i$1]
-      if (span$1.to != null) { span$1.to += offset }
-      if (span$1.from == null) {
-        var found$1 = getMarkedSpanFor(first, span$1.marker)
-        if (!found$1) {
-          span$1.from = offset
-          if (sameLine) { (first || (first = [])).push(span$1) }
-        }
-      } else {
-        span$1.from += offset
-        if (sameLine) { (first || (first = [])).push(span$1) }
-      }
-    }
-  }
-  // Make sure we didn't create any zero-length spans
-  if (first) { first = clearEmptySpans(first) }
-  if (last && last != first) { last = clearEmptySpans(last) }
-
-  var newMarkers = [first]
-  if (!sameLine) {
-    // Fill gap with whole-line-spans
-    var gap = change.text.length - 2, gapMarkers
-    if (gap > 0 && first)
-      { for (var i$2 = 0; i$2 < first.length; ++i$2)
-        { if (first[i$2].to == null)
-          { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)) } } }
-    for (var i$3 = 0; i$3 < gap; ++i$3)
-      { newMarkers.push(gapMarkers) }
-    newMarkers.push(last)
-  }
-  return newMarkers
-}
-
-// Remove spans that are empty and don't have a clearWhenEmpty
-// option of false.
-function clearEmptySpans(spans) {
-  for (var i = 0; i < spans.length; ++i) {
-    var span = spans[i]
-    if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
-      { spans.splice(i--, 1) }
-  }
-  if (!spans.length) { return null }
-  return spans
-}
-
-// Used to 'clip' out readOnly ranges when making a change.
-function removeReadOnlyRanges(doc, from, to) {
-  var markers = null
-  doc.iter(from.line, to.line + 1, function (line) {
-    if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
-      var mark = line.markedSpans[i].marker
-      if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
-        { (markers || (markers = [])).push(mark) }
-    } }
-  })
-  if (!markers) { return null }
-  var parts = [{from: from, to: to}]
-  for (var i = 0; i < markers.length; ++i) {
-    var mk = markers[i], m = mk.find(0)
-    for (var j = 0; j < parts.length; ++j) {
-      var p = parts[j]
-      if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }
-      var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to)
-      if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
-        { newParts.push({from: p.from, to: m.from}) }
-      if (dto > 0 || !mk.inclusiveRight && !dto)
-        { newParts.push({from: m.to, to: p.to}) }
-      parts.splice.apply(parts, newParts)
-      j += newParts.length - 1
-    }
-  }
-  return parts
-}
-
-// Connect or disconnect spans from a line.
-function detachMarkedSpans(line) {
-  var spans = line.markedSpans
-  if (!spans) { return }
-  for (var i = 0; i < spans.length; ++i)
-    { spans[i].marker.detachLine(line) }
-  line.markedSpans = null
-}
-function attachMarkedSpans(line, spans) {
-  if (!spans) { return }
-  for (var i = 0; i < spans.length; ++i)
-    { spans[i].marker.attachLine(line) }
-  line.markedSpans = spans
-}
-
-// Helpers used when computing which overlapping collapsed span
-// counts as the larger one.
-function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }
-function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }
-
-// Returns a number indicating which of two overlapping collapsed
-// spans is larger (and thus includes the other). Falls back to
-// comparing ids when the spans cover exactly the same range.
-function compareCollapsedMarkers(a, b) {
-  var lenDiff = a.lines.length - b.lines.length
-  if (lenDiff != 0) { return lenDiff }
-  var aPos = a.find(), bPos = b.find()
-  var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b)
-  if (fromCmp) { return -fromCmp }
-  var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b)
-  if (toCmp) { return toCmp }
-  return b.id - a.id
-}
-
-// Find out whether a line ends or starts in a collapsed span. If
-// so, return the marker for that span.
-function collapsedSpanAtSide(line, start) {
-  var sps = sawCollapsedSpans && line.markedSpans, found
-  if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
-    sp = sps[i]
-    if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
-        (!found || compareCollapsedMarkers(found, sp.marker) < 0))
-      { found = sp.marker }
-  } }
-  return found
-}
-function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }
-function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }
-
-// Test whether there exists a collapsed span that partially
-// overlaps (covers the start or end, but not both) of a new span.
-// Such overlap is not allowed.
-function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
-  var line = getLine(doc, lineNo)
-  var sps = sawCollapsedSpans && line.markedSpans
-  if (sps) { for (var i = 0; i < sps.length; ++i) {
-    var sp = sps[i]
-    if (!sp.marker.collapsed) { continue }
-    var found = sp.marker.find(0)
-    var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker)
-    var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker)
-    if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }
-    if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||
-        fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))
-      { return true }
-  } }
-}
-
-// A visual line is a line as drawn on the screen. Folding, for
-// example, can cause multiple logical lines to appear on the same
-// visual line. This finds the start of the visual line that the
-// given line is part of (usually that is the line itself).
-function visualLine(line) {
-  var merged
-  while (merged = collapsedSpanAtStart(line))
-    { line = merged.find(-1, true).line }
-  return line
-}
-
-// Returns an array of logical lines that continue the visual line
-// started by the argument, or undefined if there are no such lines.
-function visualLineContinued(line) {
-  var merged, lines
-  while (merged = collapsedSpanAtEnd(line)) {
-    line = merged.find(1, true).line
-    ;(lines || (lines = [])).push(line)
-  }
-  return lines
-}
-
-// Get the line number of the start of the visual line that the
-// given line number is part of.
-function visualLineNo(doc, lineN) {
-  var line = getLine(doc, lineN), vis = visualLine(line)
-  if (line == vis) { return lineN }
-  return lineNo(vis)
-}
-
-// Get the line number of the start of the next visual line after
-// the given line.
-function visualLineEndNo(doc, lineN) {
-  if (lineN > doc.lastLine()) { return lineN }
-  var line = getLine(doc, lineN), merged
-  if (!lineIsHidden(doc, line)) { return lineN }
-  while (merged = collapsedSpanAtEnd(line))
-    { line = merged.find(1, true).line }
-  return lineNo(line) + 1
-}
-
-// Compute whether a line is hidden. Lines count as hidden when they
-// are part of a visual line that starts with another line, or when
-// they are entirely covered by collapsed, non-widget span.
-function lineIsHidden(doc, line) {
-  var sps = sawCollapsedSpans && line.markedSpans
-  if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
-    sp = sps[i]
-    if (!sp.marker.collapsed) { continue }
-    if (sp.from == null) { return true }
-    if (sp.marker.widgetNode) { continue }
-    if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
-      { return true }
-  } }
-}
-function lineIsHiddenInner(doc, line, span) {
-  if (span.to == null) {
-    var end = span.marker.find(1, true)
-    return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))
-  }
-  if (span.marker.inclusiveRight && span.to == line.text.length)
-    { return true }
-  for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {
-    sp = line.markedSpans[i]
-    if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
-        (sp.to == null || sp.to != span.from) &&
-        (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
-        lineIsHiddenInner(doc, line, sp)) { return true }
-  }
-}
-
-// Find the height above the given line.
-function heightAtLine(lineObj) {
-  lineObj = visualLine(lineObj)
-
-  var h = 0, chunk = lineObj.parent
-  for (var i = 0; i < chunk.lines.length; ++i) {
-    var line = chunk.lines[i]
-    if (line == lineObj) { break }
-    else { h += line.height }
-  }
-  for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
-    for (var i$1 = 0; i$1 < p.children.length; ++i$1) {
-      var cur = p.children[i$1]
-      if (cur == chunk) { break }
-      else { h += cur.height }
-    }
-  }
-  return h
-}
-
-// Compute the character length of a line, taking into account
-// collapsed ranges (see markText) that might hide parts, and join
-// other lines onto it.
-function lineLength(line) {
-  if (line.height == 0) { return 0 }
-  var len = line.text.length, merged, cur = line
-  while (merged = collapsedSpanAtStart(cur)) {
-    var found = merged.find(0, true)
-    cur = found.from.line
-    len += found.from.ch - found.to.ch
-  }
-  cur = line
-  while (merged = collapsedSpanAtEnd(cur)) {
-    var found$1 = merged.find(0, true)
-    len -= cur.text.length - found$1.from.ch
-    cur = found$1.to.line
-    len += cur.text.length - found$1.to.ch
-  }
-  return len
-}
-
-// Find the longest line in the document.
-function findMaxLine(cm) {
-  var d = cm.display, doc = cm.doc
-  d.maxLine = getLine(doc, doc.first)
-  d.maxLineLength = lineLength(d.maxLine)
-  d.maxLineChanged = true
-  doc.iter(function (line) {
-    var len = lineLength(line)
-    if (len > d.maxLineLength) {
-      d.maxLineLength = len
-      d.maxLine = line
-    }
-  })
-}
-
-// BIDI HELPERS
-
-function iterateBidiSections(order, from, to, f) {
-  if (!order) { return f(from, to, "ltr") }
-  var found = false
-  for (var i = 0; i < order.length; ++i) {
-    var part = order[i]
-    if (part.from < to && part.to > from || from == to && part.to == from) {
-      f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr")
-      found = true
-    }
-  }
-  if (!found) { f(from, to, "ltr") }
-}
-
-function bidiLeft(part) { return part.level % 2 ? part.to : part.from }
-function bidiRight(part) { return part.level % 2 ? part.from : part.to }
-
-function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0 }
-function lineRight(line) {
-  var order = getOrder(line)
-  if (!order) { return line.text.length }
-  return bidiRight(lst(order))
-}
-
-function compareBidiLevel(order, a, b) {
-  var linedir = order[0].level
-  if (a == linedir) { return true }
-  if (b == linedir) { return false }
-  return a < b
-}
-
-var bidiOther = null
-function getBidiPartAt(order, pos) {
-  var found
-  bidiOther = null
-  for (var i = 0; i < order.length; ++i) {
-    var cur = order[i]
-    if (cur.from < pos && cur.to > pos) { return i }
-    if ((cur.from == pos || cur.to == pos)) {
-      if (found == null) {
-        found = i
-      } else if (compareBidiLevel(order, cur.level, order[found].level)) {
-        if (cur.from != cur.to) { bidiOther = found }
-        return i
-      } else {
-        if (cur.from != cur.to) { bidiOther = i }
-        return found
-      }
-    }
-  }
-  return found
-}
-
-function moveInLine(line, pos, dir, byUnit) {
-  if (!byUnit) { return pos + dir }
-  do { pos += dir }
-  while (pos > 0 && isExtendingChar(line.text.charAt(pos)))
-  return pos
-}
-
-// This is needed in order to move 'visually' through bi-directional
-// text -- i.e., pressing left should make the cursor go left, even
-// when in RTL text. The tricky part is the 'jumps', where RTL and
-// LTR text touch each other. This often requires the cursor offset
-// to move more than one unit, in order to visually move one unit.
-function moveVisually(line, start, dir, byUnit) {
-  var bidi = getOrder(line)
-  if (!bidi) { return moveLogically(line, start, dir, byUnit) }
-  var pos = getBidiPartAt(bidi, start), part = bidi[pos]
-  var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit)
-
-  for (;;) {
-    if (target > part.from && target < part.to) { return target }
-    if (target == part.from || target == part.to) {
-      if (getBidiPartAt(bidi, target) == pos) { return target }
-      part = bidi[pos += dir]
-      return (dir > 0) == part.level % 2 ? part.to : part.from
-    } else {
-      part = bidi[pos += dir]
-      if (!part) { return null }
-      if ((dir > 0) == part.level % 2)
-        { target = moveInLine(line, part.to, -1, byUnit) }
-      else
-        { target = moveInLine(line, part.from, 1, byUnit) }
-    }
-  }
-}
-
-function moveLogically(line, start, dir, byUnit) {
-  var target = start + dir
-  if (byUnit) { while (target > 0 && isExtendingChar(line.text.charAt(target))) { target += dir } }
-  return target < 0 || target > line.text.length ? null : target
-}
-
-// Bidirectional ordering algorithm
-// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
-// that this (partially) implements.
-
-// One-char codes used for character types:
-// L (L):   Left-to-Right
-// R (R):   Right-to-Left
-// r (AL):  Right-to-Left Arabic
-// 1 (EN):  European Number
-// + (ES):  European Number Separator
-// % (ET):  European Number Terminator
-// n (AN):  Arabic Number
-// , (CS):  Common Number Separator
-// m (NSM): Non-Spacing Mark
-// b (BN):  Boundary Neutral
-// s (B):   Paragraph Separator
-// t (S):   Segment Separator
-// w (WS):  Whitespace
-// N (ON):  Other Neutrals
-
-// Returns null if characters are ordered as they appear
-// (left-to-right), or an array of sections ({from, to, level}
-// objects) in the order in which they occur visually.
-var bidiOrdering = (function() {
-  // Character types for codepoints 0 to 0xff
-  var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"
-  // Character types for codepoints 0x600 to 0x6f9
-  var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111"
-  function charType(code) {
-    if (code <= 0xf7) { return lowTypes.charAt(code) }
-    else if (0x590 <= code && code <= 0x5f4) { return "R" }
-    else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }
-    else if (0x6ee <= code && code <= 0x8ac) { return "r" }
-    else if (0x2000 <= code && code <= 0x200b) { return "w" }
-    else if (code == 0x200c) { return "b" }
-    else { return "L" }
-  }
-
-  var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/
-  var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/
-  // Browsers seem to always treat the boundaries of block elements as being L.
-  var outerType = "L"
-
-  function BidiSpan(level, from, to) {
-    this.level = level
-    this.from = from; this.to = to
-  }
-
-  return function(str) {
-    if (!bidiRE.test(str)) { return false }
-    var len = str.length, types = []
-    for (var i = 0; i < len; ++i)
-      { types.push(charType(str.charCodeAt(i))) }
-
-    // W1. Examine each non-spacing mark (NSM) in the level run, and
-    // change the type of the NSM to the type of the previous
-    // character. If the NSM is at the start of the level run, it will
-    // get the type of sor.
-    for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {
-      var type = types[i$1]
-      if (type == "m") { types[i$1] = prev }
-      else { prev = type }
-    }
-
-    // W2. Search backwards from each instance of a European number
-    // until the first strong type (R, L, AL, or sor) is found. If an
-    // AL is found, change the type of the European number to Arabic
-    // number.
-    // W3. Change all ALs to R.
-    for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {
-      var type$1 = types[i$2]
-      if (type$1 == "1" && cur == "r") { types[i$2] = "n" }
-      else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R" } }
-    }
-
-    // W4. A single European separator between two European numbers
-    // changes to a European number. A single common separator between
-    // two numbers of the same type changes to that type.
-    for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {
-      var type$2 = types[i$3]
-      if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1" }
-      else if (type$2 == "," && prev$1 == types[i$3+1] &&
-               (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1 }
-      prev$1 = type$2
-    }
-
-    // W5. A sequence of European terminators adjacent to European
-    // numbers changes to all European numbers.
-    // W6. Otherwise, separators and terminators change to Other
-    // Neutral.
-    for (var i$4 = 0; i$4 < len; ++i$4) {
-      var type$3 = types[i$4]
-      if (type$3 == ",") { types[i$4] = "N" }
-      else if (type$3 == "%") {
-        var end = (void 0)
-        for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {}
-        var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"
-        for (var j = i$4; j < end; ++j) { types[j] = replace }
-        i$4 = end - 1
-      }
-    }
-
-    // W7. Search backwards from each instance of a European number
-    // until the first strong type (R, L, or sor) is found. If an L is
-    // found, then change the type of the European number to L.
-    for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {
-      var type$4 = types[i$5]
-      if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L" }
-      else if (isStrong.test(type$4)) { cur$1 = type$4 }
-    }
-
-    // N1. A sequence of neutrals takes the direction of the
-    // surrounding strong text if the text on both sides has the same
-    // direction. European and Arabic numbers act as if they were R in
-    // terms of their influence on neutrals. Start-of-level-run (sor)
-    // and end-of-level-run (eor) are used at level run boundaries.
-    // N2. Any remaining neutrals take the embedding direction.
-    for (var i$6 = 0; i$6 < len; ++i$6) {
-      if (isNeutral.test(types[i$6])) {
-        var end$1 = (void 0)
-        for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}
-        var before = (i$6 ? types[i$6-1] : outerType) == "L"
-        var after = (end$1 < len ? types[end$1] : outerType) == "L"
-        var replace$1 = before || after ? "L" : "R"
-        for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1 }
-        i$6 = end$1 - 1
-      }
-    }
-
-    // Here we depart from the documented algorithm, in order to avoid
-    // building up an actual levels array. Since there are only three
-    // levels (0, 1, 2) in an implementation that doesn't take
-    // explicit embedding into account, we can build up the order on
-    // the fly, without following the level-based algorithm.
-    var order = [], m
-    for (var i$7 = 0; i$7 < len;) {
-      if (countsAsLeft.test(types[i$7])) {
-        var start = i$7
-        for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}
-        order.push(new BidiSpan(0, start, i$7))
-      } else {
-        var pos = i$7, at = order.length
-        for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {}
-        for (var j$2 = pos; j$2 < i$7;) {
-          if (countsAsNum.test(types[j$2])) {
-            if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)) }
-            var nstart = j$2
-            for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}
-            order.splice(at, 0, new BidiSpan(2, nstart, j$2))
-            pos = j$2
-          } else { ++j$2 }
-        }
-        if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)) }
-      }
-    }
-    if (order[0].level == 1 && (m = str.match(/^\s+/))) {
-      order[0].from = m[0].length
-      order.unshift(new BidiSpan(0, 0, m[0].length))
-    }
-    if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
-      lst(order).to -= m[0].length
-      order.push(new BidiSpan(0, len - m[0].length, len))
-    }
-    if (order[0].level == 2)
-      { order.unshift(new BidiSpan(1, order[0].to, order[0].to)) }
-    if (order[0].level != lst(order).level)
-      { order.push(new BidiSpan(order[0].level, len, len)) }
-
-    return order
-  }
-})()
-
-// Get the bidi ordering for the given line (and cache it). Returns
-// false for lines that are fully left-to-right, and an array of
-// BidiSpan objects otherwise.
-function getOrder(line) {
-  var order = line.order
-  if (order == null) { order = line.order = bidiOrdering(line.text) }
-  return order
-}
-
-// EVENT HANDLING
-
-// Lightweight event framework. on/off also work on DOM nodes,
-// registering native DOM handlers.
-
-var noHandlers = []
-
-var on = function(emitter, type, f) {
-  if (emitter.addEventListener) {
-    emitter.addEventListener(type, f, false)
-  } else if (emitter.attachEvent) {
-    emitter.attachEvent("on" + type, f)
-  } else {
-    var map = emitter._handlers || (emitter._handlers = {})
-    map[type] = (map[type] || noHandlers).concat(f)
-  }
-}
-
-function getHandlers(emitter, type) {
-  return emitter._handlers && emitter._handlers[type] || noHandlers
-}
-
-function off(emitter, type, f) {
-  if (emitter.removeEventListener) {
-    emitter.removeEventListener(type, f, false)
-  } else if (emitter.detachEvent) {
-    emitter.detachEvent("on" + type, f)
-  } else {
-    var map = emitter._handlers, arr = map && map[type]
-    if (arr) {
-      var index = indexOf(arr, f)
-      if (index > -1)
-        { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)) }
-    }
-  }
-}
-
-function signal(emitter, type /*, values...*/) {
-  var handlers = getHandlers(emitter, type)
-  if (!handlers.length) { return }
-  var args = Array.prototype.slice.call(arguments, 2)
-  for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args) }
-}
-
-// The DOM events that CodeMirror handles can be overridden by
-// registering a (non-DOM) handler on the editor for the event name,
-// and preventDefault-ing the event in that handler.
-function signalDOMEvent(cm, e, override) {
-  if (typeof e == "string")
-    { e = {type: e, preventDefault: function() { this.defaultPrevented = true }} }
-  signal(cm, override || e.type, cm, e)
-  return e_defaultPrevented(e) || e.codemirrorIgnore
-}
-
-function signalCursorActivity(cm) {
-  var arr = cm._handlers && cm._handlers.cursorActivity
-  if (!arr) { return }
-  var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = [])
-  for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)
-    { set.push(arr[i]) } }
-}
-
-function hasHandler(emitter, type) {
-  return getHandlers(emitter, type).length > 0
-}
-
-// Add on and off methods to a constructor's prototype, to make
-// registering events on such objects more convenient.
-function eventMixin(ctor) {
-  ctor.prototype.on = function(type, f) {on(this, type, f)}
-  ctor.prototype.off = function(type, f) {off(this, type, f)}
-}
-
-// Due to the fact that we still support jurassic IE versions, some
-// compatibility wrappers are needed.
-
-function e_preventDefault(e) {
-  if (e.preventDefault) { e.preventDefault() }
-  else { e.returnValue = false }
-}
-function e_stopPropagation(e) {
-  if (e.stopPropagation) { e.stopPropagation() }
-  else { e.cancelBubble = true }
-}
-function e_defaultPrevented(e) {
-  return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false
-}
-function e_stop(e) {e_preventDefault(e); e_stopPropagation(e)}
-
-function e_target(e) {return e.target || e.srcElement}
-function e_button(e) {
-  var b = e.which
-  if (b == null) {
-    if (e.button & 1) { b = 1 }
-    else if (e.button & 2) { b = 3 }
-    else if (e.button & 4) { b = 2 }
-  }
-  if (mac && e.ctrlKey && b == 1) { b = 3 }
-  return b
-}
-
-// Detect drag-and-drop
-var dragAndDrop = function() {
-  // There is *some* kind of drag-and-drop support in IE6-8, but I
-  // couldn't get it to work yet.
-  if (ie && ie_version < 9) { return false }
-  var div = elt('div')
-  return "draggable" in div || "dragDrop" in div
-}()
-
-var zwspSupported
-function zeroWidthElement(measure) {
-  if (zwspSupported == null) {
-    var test = elt("span", "\u200b")
-    removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]))
-    if (measure.firstChild.offsetHeight != 0)
-      { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8) }
-  }
-  var node = zwspSupported ? elt("span", "\u200b") :
-    elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px")
-  node.setAttribute("cm-text", "")
-  return node
-}
-
-// Feature-detect IE's crummy client rect reporting for bidi text
-var badBidiRects
-function hasBadBidiRects(measure) {
-  if (badBidiRects != null) { return badBidiRects }
-  var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"))
-  var r0 = range(txt, 0, 1).getBoundingClientRect()
-  var r1 = range(txt, 1, 2).getBoundingClientRect()
-  removeChildren(measure)
-  if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)
-  return badBidiRects = (r1.right - r0.right < 3)
-}
-
-// See if "".split is the broken IE version, if so, provide an
-// alternative way to split lines.
-var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) {
-  var pos = 0, result = [], l = string.length
-  while (pos <= l) {
-    var nl = string.indexOf("\n", pos)
-    if (nl == -1) { nl = string.length }
-    var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl)
-    var rt = line.indexOf("\r")
-    if (rt != -1) {
-      result.push(line.slice(0, rt))
-      pos += rt + 1
-    } else {
-      result.push(line)
-      pos = nl + 1
-    }
-  }
-  return result
-} : function (string) { return string.split(/\r\n?|\n/); }
-
-var hasSelection = window.getSelection ? function (te) {
-  try { return te.selectionStart != te.selectionEnd }
-  catch(e) { return false }
-} : function (te) {
-  var range
-  try {range = te.ownerDocument.selection.createRange()}
-  catch(e) {}
-  if (!range || range.parentElement() != te) { return false }
-  return range.compareEndPoints("StartToEnd", range) != 0
-}
-
-var hasCopyEvent = (function () {
-  var e = elt("div")
-  if ("oncopy" in e) { return true }
-  e.setAttribute("oncopy", "return;")
-  return typeof e.oncopy == "function"
-})()
-
-var badZoomedRects = null
-function hasBadZoomedRects(measure) {
-  if (badZoomedRects != null) { return badZoomedRects }
-  var node = removeChildrenAndAdd(measure, elt("span", "x"))
-  var normal = node.getBoundingClientRect()
-  var fromRange = range(node, 0, 1).getBoundingClientRect()
-  return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1
-}
-
-var modes = {};
-var mimeModes = {};
-// Extra arguments are stored as the mode's dependencies, which is
-// used by (legacy) mechanisms like loadmode.js to automatically
-// load a mode. (Preferred mechanism is the require/define calls.)
-function defineMode(name, mode) {
-  if (arguments.length > 2)
-    { mode.dependencies = Array.prototype.slice.call(arguments, 2) }
-  modes[name] = mode
-}
-
-function defineMIME(mime, spec) {
-  mimeModes[mime] = spec
-}
-
-// Given a MIME type, a {name, ...options} config object, or a name
-// string, return a mode config object.
-function resolveMode(spec) {
-  if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
-    spec = mimeModes[spec]
-  } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
-    var found = mimeModes[spec.name]
-    if (typeof found == "string") { found = {name: found} }
-    spec = createObj(found, spec)
-    spec.name = found.name
-  } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
-    return resolveMode("application/xml")
-  } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
-    return resolveMode("application/json")
-  }
-  if (typeof spec == "string") { return {name: spec} }
-  else { return spec || {name: "null"} }
-}
-
-// Given a mode spec (anything that resolveMode accepts), find and
-// initialize an actual mode object.
-function getMode(options, spec) {
-  spec = resolveMode(spec)
-  var mfactory = modes[spec.name]
-  if (!mfactory) { return getMode(options, "text/plain") }
-  var modeObj = mfactory(options, spec)
-  if (modeExtensions.hasOwnProperty(spec.name)) {
-    var exts = modeExtensions[spec.name]
-    for (var prop in exts) {
-      if (!exts.hasOwnProperty(prop)) { continue }
-      if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop] }
-      modeObj[prop] = exts[prop]
-    }
-  }
-  modeObj.name = spec.name
-  if (spec.helperType) { modeObj.helperType = spec.helperType }
-  if (spec.modeProps) { for (var prop$1 in spec.modeProps)
-    { modeObj[prop$1] = spec.modeProps[prop$1] } }
-
-  return modeObj
-}
-
-// This can be used to attach properties to mode objects from
-// outside the actual mode definition.
-var modeExtensions = {}
-function extendMode(mode, properties) {
-  var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {})
-  copyObj(properties, exts)
-}
-
-function copyState(mode, state) {
-  if (state === true) { return state }
-  if (mode.copyState) { return mode.copyState(state) }
-  var nstate = {}
-  for (var n in state) {
-    var val = state[n]
-    if (val instanceof Array) { val = val.concat([]) }
-    nstate[n] = val
-  }
-  return nstate
-}
-
-// Given a mode and a state (for that mode), find the inner mode and
-// state at the position that the state refers to.
-function innerMode(mode, state) {
-  var info
-  while (mode.innerMode) {
-    info = mode.innerMode(state)
-    if (!info || info.mode == mode) { break }
-    state = info.state
-    mode = info.mode
-  }
-  return info || {mode: mode, state: state}
-}
-
-function startState(mode, a1, a2) {
-  return mode.startState ? mode.startState(a1, a2) : true
-}
-
-// STRING STREAM
-
-// Fed to the mode parsers, provides helper functions to make
-// parsers more succinct.
-
-var StringStream = function(string, tabSize) {
-  this.pos = this.start = 0
-  this.string = string
-  this.tabSize = tabSize || 8
-  this.lastColumnPos = this.lastColumnValue = 0
-  this.lineStart = 0
-}
-
-StringStream.prototype = {
-  eol: function() {return this.pos >= this.string.length},
-  sol: function() {return this.pos == this.lineStart},
-  peek: function() {return this.string.charAt(this.pos) || undefined},
-  next: function() {
-    if (this.pos < this.string.length)
-      { return this.string.charAt(this.pos++) }
-  },
-  eat: function(match) {
-    var ch = this.string.charAt(this.pos)
-    var ok
-    if (typeof match == "string") { ok = ch == match }
-    else { ok = ch && (match.test ? match.test(ch) : match(ch)) }
-    if (ok) {++this.pos; return ch}
-  },
-  eatWhile: function(match) {
-    var start = this.pos
-    while (this.eat(match)){}
-    return this.pos > start
-  },
-  eatSpace: function() {
-    var this$1 = this;
-
-    var start = this.pos
-    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos }
-    return this.pos > start
-  },
-  skipToEnd: function() {this.pos = this.string.length},
-  skipTo: function(ch) {
-    var found = this.string.indexOf(ch, this.pos)
-    if (found > -1) {this.pos = found; return true}
-  },
-  backUp: function(n) {this.pos -= n},
-  column: function() {
-    if (this.lastColumnPos < this.start) {
-      this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue)
-      this.lastColumnPos = this.start
-    }
-    return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
-  },
-  indentation: function() {
-    return countColumn(this.string, null, this.tabSize) -
-      (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
-  },
-  match: function(pattern, consume, caseInsensitive) {
-    if (typeof pattern == "string") {
-      var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; }
-      var substr = this.string.substr(this.pos, pattern.length)
-      if (cased(substr) == cased(pattern)) {
-        if (consume !== false) { this.pos += pattern.length }
-        return true
-      }
-    } else {
-      var match = this.string.slice(this.pos).match(pattern)
-      if (match && match.index > 0) { return null }
-      if (match && consume !== false) { this.pos += match[0].length }
-      return match
-    }
-  },
-  current: function(){return this.string.slice(this.start, this.pos)},
-  hideFirstChars: function(n, inner) {
-    this.lineStart += n
-    try { return inner() }
-    finally { this.lineStart -= n }
-  }
-}
-
-// Compute a style array (an array starting with a mode generation
-// -- for invalidation -- followed by pairs of end positions and
-// style strings), which is used to highlight the tokens on the
-// line.
-function highlightLine(cm, line, state, forceToEnd) {
-  // A styles array always starts with a number identifying the
-  // mode/overlays that it is based on (for easy invalidation).
-  var st = [cm.state.modeGen], lineClasses = {}
-  // Compute the base array of styles
-  runMode(cm, line.text, cm.doc.mode, state, function (end, style) { return st.push(end, style); },
-    lineClasses, forceToEnd)
-
-  // Run overlays, adjust style array.
-  var loop = function ( o ) {
-    var overlay = cm.state.overlays[o], i = 1, at = 0
-    runMode(cm, line.text, overlay.mode, true, function (end, style) {
-      var start = i
-      // Ensure there's a token end at the current position, and that i points at it
-      while (at < end) {
-        var i_end = st[i]
-        if (i_end > end)
-          { st.splice(i, 1, end, st[i+1], i_end) }
-        i += 2
-        at = Math.min(end, i_end)
-      }
-      if (!style) { return }
-      if (overlay.opaque) {
-        st.splice(start, i - start, end, "overlay " + style)
-        i = start + 2
-      } else {
-        for (; start < i; start += 2) {
-          var cur = st[start+1]
-          st[start+1] = (cur ? cur + " " : "") + "overlay " + style
-        }
-      }
-    }, lineClasses)
-  };
-
-  for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );
-
-  return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}
-}
-
-function getLineStyles(cm, line, updateFrontier) {
-  if (!line.styles || line.styles[0] != cm.state.modeGen) {
-    var state = getStateBefore(cm, lineNo(line))
-    var result = highlightLine(cm, line, line.text.length > cm.options.maxHighlightLength ? copyState(cm.doc.mode, state) : state)
-    line.stateAfter = state
-    line.styles = result.styles
-    if (result.classes) { line.styleClasses = result.classes }
-    else if (line.styleClasses) { line.styleClasses = null }
-    if (updateFrontier === cm.doc.frontier) { cm.doc.frontier++ }
-  }
-  return line.styles
-}
-
-function getStateBefore(cm, n, precise) {
-  var doc = cm.doc, display = cm.display
-  if (!doc.mode.startState) { return true }
-  var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter
-  if (!state) { state = startState(doc.mode) }
-  else { state = copyState(doc.mode, state) }
-  doc.iter(pos, n, function (line) {
-    processLine(cm, line.text, state)
-    var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo
-    line.stateAfter = save ? copyState(doc.mode, state) : null
-    ++pos
-  })
-  if (precise) { doc.frontier = pos }
-  return state
-}
-
-// Lightweight form of highlight -- proceed over this line and
-// update state, but don't save a style array. Used for lines that
-// aren't currently visible.
-function processLine(cm, text, state, startAt) {
-  var mode = cm.doc.mode
-  var stream = new StringStream(text, cm.options.tabSize)
-  stream.start = stream.pos = startAt || 0
-  if (text == "") { callBlankLine(mode, state) }
-  while (!stream.eol()) {
-    readToken(mode, stream, state)
-    stream.start = stream.pos
-  }
-}
-
-function callBlankLine(mode, state) {
-  if (mode.blankLine) { return mode.blankLine(state) }
-  if (!mode.innerMode) { return }
-  var inner = innerMode(mode, state)
-  if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }
-}
-
-function readToken(mode, stream, state, inner) {
-  for (var i = 0; i < 10; i++) {
-    if (inner) { inner[0] = innerMode(mode, state).mode }
-    var style = mode.token(stream, state)
-    if (stream.pos > stream.start) { return style }
-  }
-  throw new Error("Mode " + mode.name + " failed to advance stream.")
-}
-
-// Utility for getTokenAt and getLineTokens
-function takeToken(cm, pos, precise, asArray) {
-  var getObj = function (copy) { return ({
-    start: stream.start, end: stream.pos,
-    string: stream.current(),
-    type: style || null,
-    state: copy ? copyState(doc.mode, state) : state
-  }); }
-
-  var doc = cm.doc, mode = doc.mode, style
-  pos = clipPos(doc, pos)
-  var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise)
-  var stream = new StringStream(line.text, cm.options.tabSize), tokens
-  if (asArray) { tokens = [] }
-  while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
-    stream.start = stream.pos
-    style = readToken(mode, stream, state)
-    if (asArray) { tokens.push(getObj(true)) }
-  }
-  return asArray ? tokens : getObj()
-}
-
-function extractLineClasses(type, output) {
-  if (type) { for (;;) {
-    var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/)
-    if (!lineClass) { break }
-    type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length)
-    var prop = lineClass[1] ? "bgClass" : "textClass"
-    if (output[prop] == null)
-      { output[prop] = lineClass[2] }
-    else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
-      { output[prop] += " " + lineClass[2] }
-  } }
-  return type
-}
-
-// Run the given mode's parser over a line, calling f for each token.
-function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
-  var flattenSpans = mode.flattenSpans
-  if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans }
-  var curStart = 0, curStyle = null
-  var stream = new StringStream(text, cm.options.tabSize), style
-  var inner = cm.options.addModeClass && [null]
-  if (text == "") { extractLineClasses(callBlankLine(mode, state), lineClasses) }
-  while (!stream.eol()) {
-    if (stream.pos > cm.options.maxHighlightLength) {
-      flattenSpans = false
-      if (forceToEnd) { processLine(cm, text, state, stream.pos) }
-      stream.pos = text.length
-      style = null
-    } else {
-      style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses)
-    }
-    if (inner) {
-      var mName = inner[0].name
-      if (mName) { style = "m-" + (style ? mName + " " + style : mName) }
-    }
-    if (!flattenSpans || curStyle != style) {
-      while (curStart < stream.start) {
-        curStart = Math.min(stream.start, curStart + 5000)
-        f(curStart, curStyle)
-      }
-      curStyle = style
-    }
-    stream.start = stream.pos
-  }
-  while (curStart < stream.pos) {
-    // Webkit seems to refuse to render text nodes longer than 57444
-    // characters, and returns inaccurate measurements in nodes
-    // starting around 5000 chars.
-    var pos = Math.min(stream.pos, curStart + 5000)
-    f(pos, curStyle)
-    curStart = pos
-  }
-}
-
-// Finds the line to start with when starting a parse. Tries to
-// find a line with a stateAfter, so that it can start with a
-// valid state. If that fails, it returns the line with the
-// smallest indentation, which tends to need the least context to
-// parse correctly.
-function findStartLine(cm, n, precise) {
-  var minindent, minline, doc = cm.doc
-  var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100)
-  for (var search = n; search > lim; --search) {
-    if (search <= doc.first) { return doc.first }
-    var line = getLine(doc, search - 1)
-    if (line.stateAfter && (!precise || search <= doc.frontier)) { return search }
-    var indented = countColumn(line.text, null, cm.options.tabSize)
-    if (minline == null || minindent > indented) {
-      minline = search - 1
-      minindent = indented
-    }
-  }
-  return minline
-}
-
-// LINE DATA STRUCTURE
-
-// Line objects. These hold state related to a line, including
-// highlighting info (the styles array).
-function Line(text, markedSpans, estimateHeight) {
-  this.text = text
-  attachMarkedSpans(this, markedSpans)
-  this.height = estimateHeight ? estimateHeight(this) : 1
-}
-eventMixin(Line)
-Line.prototype.lineNo = function() { return lineNo(this) }
-
-// Change the content (text, markers) of a line. Automatically
-// invalidates cached information and tries to re-estimate the
-// line's height.
-function updateLine(line, text, markedSpans, estimateHeight) {
-  line.text = text
-  if (line.stateAfter) { line.stateAfter = null }
-  if (line.styles) { line.styles = null }
-  if (line.order != null) { line.order = null }
-  detachMarkedSpans(line)
-  attachMarkedSpans(line, markedSpans)
-  var estHeight = estimateHeight ? estimateHeight(line) : 1
-  if (estHeight != line.height) { updateLineHeight(line, estHeight) }
-}
-
-// Detach a line from the document tree and its markers.
-function cleanUpLine(line) {
-  line.parent = null
-  detachMarkedSpans(line)
-}
-
-// Convert a style as returned by a mode (either null, or a string
-// containing one or more styles) to a CSS style. This is cached,
-// and also looks for line-wide styles.
-var styleToClassCache = {};
-var styleToClassCacheWithMode = {};
-function interpretTokenStyle(style, options) {
-  if (!style || /^\s*$/.test(style)) { return null }
-  var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache
-  return cache[style] ||
-    (cache[style] = style.replace(/\S+/g, "cm-$&"))
-}
-
-// Render the DOM representation of the text of a line. Also builds
-// up a 'line map', which points at the DOM nodes that represent
-// specific stretches of text, and is used by the measuring code.
-// The returned object contains the DOM node, this map, and
-// information about line-wide styles that were set by the mode.
-function buildLineContent(cm, lineView) {
-  // The padding-right forces the element to have a 'border', which
-  // is needed on Webkit to be able to get line-level bounding
-  // rectangles for it (in measureChar).
-  var content = elt("span", null, null, webkit ? "padding-right: .1px" : null)
-  var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
-                 col: 0, pos: 0, cm: cm,
-                 trailingSpace: false,
-                 splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")}
-  // hide from accessibility tree
-  content.setAttribute("role", "presentation")
-  builder.pre.setAttribute("role", "presentation")
-  lineView.measure = {}
-
-  // Iterate over the logical lines that make up this visual line.
-  for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
-    var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0)
-    builder.pos = 0
-    builder.addToken = buildToken
-    // Optionally wire in some hacks into the token-rendering
-    // algorithm, to deal with browser quirks.
-    if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
-      { builder.addToken = buildTokenBadBidi(builder.addToken, order) }
-    builder.map = []
-    var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line)
-    insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate))
-    if (line.styleClasses) {
-      if (line.styleClasses.bgClass)
-        { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "") }
-      if (line.styleClasses.textClass)
-        { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "") }
-    }
-
-    // Ensure at least a single node is present, for measuring.
-    if (builder.map.length == 0)
-      { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))) }
-
-    // Store the map and a cache object for the current logical line
-    if (i == 0) {
-      lineView.measure.map = builder.map
-      lineView.measure.cache = {}
-    } else {
-      ;(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)
-      ;(lineView.measure.caches || (lineView.measure.caches = [])).push({})
-    }
-  }
-
-  // See issue #2901
-  if (webkit) {
-    var last = builder.content.lastChild
-    if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab")))
-      { builder.content.className = "cm-tab-wrap-hack" }
-  }
-
-  signal(cm, "renderLine", cm, lineView.line, builder.pre)
-  if (builder.pre.className)
-    { builder.textClass = joinClasses(builder.pre.className, builder.textClass || "") }
-
-  return builder
-}
-
-function defaultSpecialCharPlaceholder(ch) {
-  var token = elt("span", "\u2022", "cm-invalidchar")
-  token.title = "\\u" + ch.charCodeAt(0).toString(16)
-  token.setAttribute("aria-label", token.title)
-  return token
-}
-
-// Build up the DOM representation for a single token, and add it to
-// the line map. Takes care to render special characters separately.
-function buildToken(builder, text, style, startStyle, endStyle, title, css) {
-  if (!text) { return }
-  var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text
-  var special = builder.cm.state.specialChars, mustWrap = false
-  var content
-  if (!special.test(text)) {
-    builder.col += text.length
-    content = document.createTextNode(displayText)
-    builder.map.push(builder.pos, builder.pos + text.length, content)
-    if (ie && ie_version < 9) { mustWrap = true }
-    builder.pos += text.length
-  } else {
-    content = document.createDocumentFragment()
-    var pos = 0
-    while (true) {
-      special.lastIndex = pos
-      var m = special.exec(text)
-      var skipped = m ? m.index - pos : text.length - pos
-      if (skipped) {
-        var txt = document.createTextNode(displayText.slice(pos, pos + skipped))
-        if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])) }
-        else { content.appendChild(txt) }
-        builder.map.push(builder.pos, builder.pos + skipped, txt)
-        builder.col += skipped
-        builder.pos += skipped
-      }
-      if (!m) { break }
-      pos += skipped + 1
-      var txt$1 = (void 0)
-      if (m[0] == "\t") {
-        var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize
-        txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"))
-        txt$1.setAttribute("role", "presentation")
-        txt$1.setAttribute("cm-text", "\t")
-        builder.col += tabWidth
-      } else if (m[0] == "\r" || m[0] == "\n") {
-        txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"))
-        txt$1.setAttribute("cm-text", m[0])
-        builder.col += 1
-      } else {
-        txt$1 = builder.cm.options.specialCharPlaceholder(m[0])
-        txt$1.setAttribute("cm-text", m[0])
-        if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])) }
-        else { content.appendChild(txt$1) }
-        builder.col += 1
-      }
-      builder.map.push(builder.pos, builder.pos + 1, txt$1)
-      builder.pos++
-    }
-  }
-  builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32
-  if (style || startStyle || endStyle || mustWrap || css) {
-    var fullStyle = style || ""
-    if (startStyle) { fullStyle += startStyle }
-    if (endStyle) { fullStyle += endStyle }
-    var token = elt("span", [content], fullStyle, css)
-    if (title) { token.title = title }
-    return builder.content.appendChild(token)
-  }
-  builder.content.appendChild(content)
-}
-
-function splitSpaces(text, trailingBefore) {
-  if (text.length > 1 && !/  /.test(text)) { return text }
-  var spaceBefore = trailingBefore, result = ""
-  for (var i = 0; i < text.length; i++) {
-    var ch = text.charAt(i)
-    if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))
-      { ch = "\u00a0" }
-    result += ch
-    spaceBefore = ch == " "
-  }
-  return result
-}
-
-// Work around nonsense dimensions being reported for stretches of
-// right-to-left text.
-function buildTokenBadBidi(inner, order) {
-  return function (builder, text, style, startStyle, endStyle, title, css) {
-    style = style ? style + " cm-force-border" : "cm-force-border"
-    var start = builder.pos, end = start + text.length
-    for (;;) {
-      // Find the part that overlaps with the start of this text
-      var part = (void 0)
-      for (var i = 0; i < order.length; i++) {
-        part = order[i]
-        if (part.to > start && part.from <= start) { break }
-      }
-      if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, title, css) }
-      inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css)
-      startStyle = null
-      text = text.slice(part.to - start)
-      start = part.to
-    }
-  }
-}
-
-function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
-  var widget = !ignoreWidget && marker.widgetNode
-  if (widget) { builder.map.push(builder.pos, builder.pos + size, widget) }
-  if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
-    if (!widget)
-      { widget = builder.content.appendChild(document.createElement("span")) }
-    widget.setAttribute("cm-marker", marker.id)
-  }
-  if (widget) {
-    builder.cm.display.input.setUneditable(widget)
-    builder.content.appendChild(widget)
-  }
-  builder.pos += size
-  builder.trailingSpace = false
-}
-
-// Outputs a number of spans to make up a line, taking highlighting
-// and marked text into account.
-function insertLineContent(line, builder, styles) {
-  var spans = line.markedSpans, allText = line.text, at = 0
-  if (!spans) {
-    for (var i$1 = 1; i$1 < styles.length; i$1+=2)
-      { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)) }
-    return
-  }
-
-  var len = allText.length, pos = 0, i = 1, text = "", style, css
-  var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed
-  for (;;) {
-    if (nextChange == pos) { // Update current marker set
-      spanStyle = spanEndStyle = spanStartStyle = title = css = ""
-      collapsed = null; nextChange = Infinity
-      var foundBookmarks = [], endStyles = (void 0)
-      for (var j = 0; j < spans.length; ++j) {
-        var sp = spans[j], m = sp.marker
-        if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
-          foundBookmarks.push(m)
-        } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
-          if (sp.to != null && sp.to != pos && nextChange > sp.to) {
-            nextChange = sp.to
-            spanEndStyle = ""
-          }
-          if (m.className) { spanStyle += " " + m.className }
-          if (m.css) { css = (css ? css + ";" : "") + m.css }
-          if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle }
-          if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to) }
-          if (m.title && !title) { title = m.title }
-          if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
-            { collapsed = sp }
-        } else if (sp.from > pos && nextChange > sp.from) {
-          nextChange = sp.from
-        }
-      }
-      if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)
-        { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1] } } }
-
-      if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)
-        { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]) } }
-      if (collapsed && (collapsed.from || 0) == pos) {
-        buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
-                           collapsed.marker, collapsed.from == null)
-        if (collapsed.to == null) { return }
-        if (collapsed.to == pos) { collapsed = false }
-      }
-    }
-    if (pos >= len) { break }
-
-    var upto = Math.min(len, nextChange)
-    while (true) {
-      if (text) {
-        var end = pos + text.length
-        if (!collapsed) {
-          var tokenText = end > upto ? text.slice(0, upto - pos) : text
-          builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
-                           spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css)
-        }
-        if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}
-        pos = end
-        spanStartStyle = ""
-      }
-      text = allText.slice(at, at = styles[i++])
-      style = interpretTokenStyle(styles[i++], builder.cm.options)
-    }
-  }
-}
-
-
-// These objects are used to represent the visible (currently drawn)
-// part of the document. A LineView may correspond to multiple
-// logical lines, if those are connected by collapsed ranges.
-function LineView(doc, line, lineN) {
-  // The starting line
-  this.line = line
-  // Continuing lines, if any
-  this.rest = visualLineContinued(line)
-  // Number of logical lines in this visual line
-  this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1
-  this.node = this.text = null
-  this.hidden = lineIsHidden(doc, line)
-}
-
-// Create a range of LineView objects for the given lines.
-function buildViewArray(cm, from, to) {
-  var array = [], nextPos
-  for (var pos = from; pos < to; pos = nextPos) {
-    var view = new LineView(cm.doc, getLine(cm.doc, pos), pos)
-    nextPos = pos + view.size
-    array.push(view)
-  }
-  return array
-}
-
-var operationGroup = null
-
-function pushOperation(op) {
-  if (operationGroup) {
-    operationGroup.ops.push(op)
-  } else {
-    op.ownsGroup = operationGroup = {
-      ops: [op],
-      delayedCallbacks: []
-    }
-  }
-}
-
-function fireCallbacksForOps(group) {
-  // Calls delayed callbacks and cursorActivity handlers until no
-  // new ones appear
-  var callbacks = group.delayedCallbacks, i = 0
-  do {
-    for (; i < callbacks.length; i++)
-      { callbacks[i].call(null) }
-    for (var j = 0; j < group.ops.length; j++) {
-      var op = group.ops[j]
-      if (op.cursorActivityHandlers)
-        { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
-          { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm) } }
-    }
-  } while (i < callbacks.length)
-}
-
-function finishOperation(op, endCb) {
-  var group = op.ownsGroup
-  if (!group) { return }
-
-  try { fireCallbacksForOps(group) }
-  finally {
-    operationGroup = null
-    endCb(group)
-  }
-}
-
-var orphanDelayedCallbacks = null
-
-// Often, we want to signal events at a point where we are in the
-// middle of some work, but don't want the handler to start calling
-// other methods on the editor, which might be in an inconsistent
-// state or simply not expect any other events to happen.
-// signalLater looks whether there are any handlers, and schedules
-// them to be executed when the last operation ends, or, if no
-// operation is active, when a timeout fires.
-function signalLater(emitter, type /*, values...*/) {
-  var arr = getHandlers(emitter, type)
-  if (!arr.length) { return }
-  var args = Array.prototype.slice.call(arguments, 2), list
-  if (operationGroup) {
-    list = operationGroup.delayedCallbacks
-  } else if (orphanDelayedCallbacks) {
-    list = orphanDelayedCallbacks
-  } else {
-    list = orphanDelayedCallbacks = []
-    setTimeout(fireOrphanDelayed, 0)
-  }
-  var loop = function ( i ) {
-    list.push(function () { return arr[i].apply(null, args); })
-  };
-
-  for (var i = 0; i < arr.length; ++i)
-    loop( i );
-}
-
-function fireOrphanDelayed() {
-  var delayed = orphanDelayedCallbacks
-  orphanDelayedCallbacks = null
-  for (var i = 0; i < delayed.length; ++i) { delayed[i]() }
-}
-
-// When an aspect of a line changes, a string is added to
-// lineView.changes. This updates the relevant part of the line's
-// DOM structure.
-function updateLineForChanges(cm, lineView, lineN, dims) {
-  for (var j = 0; j < lineView.changes.length; j++) {
-    var type = lineView.changes[j]
-    if (type == "text") { updateLineText(cm, lineView) }
-    else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims) }
-    else if (type == "class") { updateLineClasses(lineView) }
-    else if (type == "widget") { updateLineWidgets(cm, lineView, dims) }
-  }
-  lineView.changes = null
-}
-
-// Lines with gutter elements, widgets or a background class need to
-// be wrapped, and have the extra elements added to the wrapper div
-function ensureLineWrapped(lineView) {
-  if (lineView.node == lineView.text) {
-    lineView.node = elt("div", null, null, "position: relative")
-    if (lineView.text.parentNode)
-      { lineView.text.parentNode.replaceChild(lineView.node, lineView.text) }
-    lineView.node.appendChild(lineView.text)
-    if (ie && ie_version < 8) { lineView.node.style.zIndex = 2 }
-  }
-  return lineView.node
-}
-
-function updateLineBackground(lineView) {
-  var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass
-  if (cls) { cls += " CodeMirror-linebackground" }
-  if (lineView.background) {
-    if (cls) { lineView.background.className = cls }
-    else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null }
-  } else if (cls) {
-    var wrap = ensureLineWrapped(lineView)
-    lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild)
-  }
-}
-
-// Wrapper around buildLineContent which will reuse the structure
-// in display.externalMeasured when possible.
-function getLineContent(cm, lineView) {
-  var ext = cm.display.externalMeasured
-  if (ext && ext.line == lineView.line) {
-    cm.display.externalMeasured = null
-    lineView.measure = ext.measure
-    return ext.built
-  }
-  return buildLineContent(cm, lineView)
-}
-
-// Redraw the line's text. Interacts with the background and text
-// classes because the mode may output tokens that influence these
-// classes.
-function updateLineText(cm, lineView) {
-  var cls = lineView.text.className
-  var built = getLineContent(cm, lineView)
-  if (lineView.text == lineView.node) { lineView.node = built.pre }
-  lineView.text.parentNode.replaceChild(built.pre, lineView.text)
-  lineView.text = built.pre
-  if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
-    lineView.bgClass = built.bgClass
-    lineView.textClass = built.textClass
-    updateLineClasses(lineView)
-  } else if (cls) {
-    lineView.text.className = cls
-  }
-}
-
-function updateLineClasses(lineView) {
-  updateLineBackground(lineView)
-  if (lineView.line.wrapClass)
-    { ensureLineWrapped(lineView).className = lineView.line.wrapClass }
-  else if (lineView.node != lineView.text)
-    { lineView.node.className = "" }
-  var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass
-  lineView.text.className = textClass || ""
-}
-
-function updateLineGutter(cm, lineView, lineN, dims) {
-  if (lineView.gutter) {
-    lineView.node.removeChild(lineView.gutter)
-    lineView.gutter = null
-  }
-  if (lineView.gutterBackground) {
-    lineView.node.removeChild(lineView.gutterBackground)
-    lineView.gutterBackground = null
-  }
-  if (lineView.line.gutterClass) {
-    var wrap = ensureLineWrapped(lineView)
-    lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
-                                    ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px"))
-    wrap.insertBefore(lineView.gutterBackground, lineView.text)
-  }
-  var markers = lineView.line.gutterMarkers
-  if (cm.options.lineNumbers || markers) {
-    var wrap$1 = ensureLineWrapped(lineView)
-    var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"))
-    cm.display.input.setUneditable(gutterWrap)
-    wrap$1.insertBefore(gutterWrap, lineView.text)
-    if (lineView.line.gutterClass)
-      { gutterWrap.className += " " + lineView.line.gutterClass }
-    if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
-      { lineView.lineNumber = gutterWrap.appendChild(
-        elt("div", lineNumberFor(cm.options, lineN),
-            "CodeMirror-linenumber CodeMirror-gutter-elt",
-            ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))) }
-    if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) {
-      var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]
-      if (found)
-        { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt",
-                                   ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))) }
-    } }
-  }
-}
-
-function updateLineWidgets(cm, lineView, dims) {
-  if (lineView.alignable) { lineView.alignable = null }
-  for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
-    next = node.nextSibling
-    if (node.className == "CodeMirror-linewidget")
-      { lineView.node.removeChild(node) }
-  }
-  insertLineWidgets(cm, lineView, dims)
-}
-
-// Build a line's DOM representation from scratch
-function buildLineElement(cm, lineView, lineN, dims) {
-  var built = getLineContent(cm, lineView)
-  lineView.text = lineView.node = built.pre
-  if (built.bgClass) { lineView.bgClass = built.bgClass }
-  if (built.textClass) { lineView.textClass = built.textClass }
-
-  updateLineClasses(lineView)
-  updateLineGutter(cm, lineView, lineN, dims)
-  insertLineWidgets(cm, lineView, dims)
-  return lineView.node
-}
-
-// A lineView may contain multiple logical lines (when merged by
-// collapsed spans). The widgets for all of them need to be drawn.
-function insertLineWidgets(cm, lineView, dims) {
-  insertLineWidgetsFor(cm, lineView.line, lineView, dims, true)
-  if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
-    { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false) } }
-}
-
-function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
-  if (!line.widgets) { return }
-  var wrap = ensureLineWrapped(lineView)
-  for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
-    var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget")
-    if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true") }
-    positionLineWidget(widget, node, lineView, dims)
-    cm.display.input.setUneditable(node)
-    if (allowAbove && widget.above)
-      { wrap.insertBefore(node, lineView.gutter || lineView.text) }
-    else
-      { wrap.appendChild(node) }
-    signalLater(widget, "redraw")
-  }
-}
-
-function positionLineWidget(widget, node, lineView, dims) {
-  if (widget.noHScroll) {
-    ;(lineView.alignable || (lineView.alignable = [])).push(node)
-    var width = dims.wrapperWidth
-    node.style.left = dims.fixedPos + "px"
-    if (!widget.coverGutter) {
-      width -= dims.gutterTotalWidth
-      node.style.paddingLeft = dims.gutterTotalWidth + "px"
-    }
-    node.style.width = width + "px"
-  }
-  if (widget.coverGutter) {
-    node.style.zIndex = 5
-    node.style.position = "relative"
-    if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px" }
-  }
-}
-
-function widgetHeight(widget) {
-  if (widget.height != null) { return widget.height }
-  var cm = widget.doc.cm
-  if (!cm) { return 0 }
-  if (!contains(document.body, widget.node)) {
-    var parentStyle = "position: relative;"
-    if (widget.coverGutter)
-      { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;" }
-    if (widget.noHScroll)
-      { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;" }
-    removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle))
-  }
-  return widget.height = widget.node.parentNode.offsetHeight
-}
-
-// Return true when the given mouse event happened in a widget
-function eventInWidget(display, e) {
-  for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
-    if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
-        (n.parentNode == display.sizer && n != display.mover))
-      { return true }
-  }
-}
-
-// POSITION MEASUREMENT
-
-function paddingTop(display) {return display.lineSpace.offsetTop}
-function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}
-function paddingH(display) {
-  if (display.cachedPaddingH) { return display.cachedPaddingH }
-  var e = removeChildrenAndAdd(display.measure, elt("pre", "x"))
-  var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle
-  var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}
-  if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data }
-  return data
-}
-
-function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }
-function displayWidth(cm) {
-  return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth
-}
-function displayHeight(cm) {
-  return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight
-}
-
-// Ensure the lineView.wrapping.heights array is populated. This is
-// an array of bottom offsets for the lines that make up a drawn
-// line. When lineWrapping is on, there might be more than one
-// height.
-function ensureLineHeights(cm, lineView, rect) {
-  var wrapping = cm.options.lineWrapping
-  var curWidth = wrapping && displayWidth(cm)
-  if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
-    var heights = lineView.measure.heights = []
-    if (wrapping) {
-      lineView.measure.width = curWidth
-      var rects = lineView.text.firstChild.getClientRects()
-      for (var i = 0; i < rects.length - 1; i++) {
-        var cur = rects[i], next = rects[i + 1]
-        if (Math.abs(cur.bottom - next.bottom) > 2)
-          { heights.push((cur.bottom + next.top) / 2 - rect.top) }
-      }
-    }
-    heights.push(rect.bottom - rect.top)
-  }
-}
-
-// Find a line map (mapping character offsets to text nodes) and a
-// measurement cache for the given line number. (A line view might
-// contain multiple lines when collapsed ranges are present.)
-function mapFromLineView(lineView, line, lineN) {
-  if (lineView.line == line)
-    { return {map: lineView.measure.map, cache: lineView.measure.cache} }
-  for (var i = 0; i < lineView.rest.length; i++)
-    { if (lineView.rest[i] == line)
-      { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }
-  for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)
-    { if (lineNo(lineView.rest[i$1]) > lineN)
-      { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }
-}
-
-// Render a line into the hidden node display.externalMeasured. Used
-// when measurement is needed for a line that's not in the viewport.
-function updateExternalMeasurement(cm, line) {
-  line = visualLine(line)
-  var lineN = lineNo(line)
-  var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN)
-  view.lineN = lineN
-  var built = view.built = buildLineContent(cm, view)
-  view.text = built.pre
-  removeChildrenAndAdd(cm.display.lineMeasure, built.pre)
-  return view
-}
-
-// Get a {top, bottom, left, right} box (in line-local coordinates)
-// for a given character.
-function measureChar(cm, line, ch, bias) {
-  return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)
-}
-
-// Find a line view that corresponds to the given line number.
-function findViewForLine(cm, lineN) {
-  if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
-    { return cm.display.view[findViewIndex(cm, lineN)] }
-  var ext = cm.display.externalMeasured
-  if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
-    { return ext }
-}
-
-// Measurement can be split in two steps, the set-up work that
-// applies to the whole line, and the measurement of the actual
-// character. Functions like coordsChar, that need to do a lot of
-// measurements in a row, can thus ensure that the set-up work is
-// only done once.
-function prepareMeasureForLine(cm, line) {
-  var lineN = lineNo(line)
-  var view = findViewForLine(cm, lineN)
-  if (view && !view.text) {
-    view = null
-  } else if (view && view.changes) {
-    updateLineForChanges(cm, view, lineN, getDimensions(cm))
-    cm.curOp.forceUpdate = true
-  }
-  if (!view)
-    { view = updateExternalMeasurement(cm, line) }
-
-  var info = mapFromLineView(view, line, lineN)
-  return {
-    line: line, view: view, rect: null,
-    map: info.map, cache: info.cache, before: info.before,
-    hasHeights: false
-  }
-}
-
-// Given a prepared measurement object, measures the position of an
-// actual character (or fetches it from the cache).
-function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
-  if (prepared.before) { ch = -1 }
-  var key = ch + (bias || ""), found
-  if (prepared.cache.hasOwnProperty(key)) {
-    found = prepared.cache[key]
-  } else {
-    if (!prepared.rect)
-      { prepared.rect = prepared.view.text.getBoundingClientRect() }
-    if (!prepared.hasHeights) {
-      ensureLineHeights(cm, prepared.view, prepared.rect)
-      prepared.hasHeights = true
-    }
-    found = measureCharInner(cm, prepared, ch, bias)
-    if (!found.bogus) { prepared.cache[key] = found }
-  }
-  return {left: found.left, right: found.right,
-          top: varHeight ? found.rtop : found.top,
-          bottom: varHeight ? found.rbottom : found.bottom}
-}
-
-var nullRect = {left: 0, right: 0, top: 0, bottom: 0}
-
-function nodeAndOffsetInLineMap(map, ch, bias) {
-  var node, start, end, collapse, mStart, mEnd
-  // First, search the line map for the text node corresponding to,
-  // or closest to, the target character.
-  for (var i = 0; i < map.length; i += 3) {
-    mStart = map[i]
-    mEnd = map[i + 1]
-    if (ch < mStart) {
-      start = 0; end = 1
-      collapse = "left"
-    } else if (ch < mEnd) {
-      start = ch - mStart
-      end = start + 1
-    } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
-      end = mEnd - mStart
-      start = end - 1
-      if (ch >= mEnd) { collapse = "right" }
-    }
-    if (start != null) {
-      node = map[i + 2]
-      if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
-        { collapse = bias }
-      if (bias == "left" && start == 0)
-        { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
-          node = map[(i -= 3) + 2]
-          collapse = "left"
-        } }
-      if (bias == "right" && start == mEnd - mStart)
-        { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
-          node = map[(i += 3) + 2]
-          collapse = "right"
-        } }
-      break
-    }
-  }
-  return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}
-}
-
-function getUsefulRect(rects, bias) {
-  var rect = nullRect
-  if (bias == "left") { for (var i = 0; i < rects.length; i++) {
-    if ((rect = rects[i]).left != rect.right) { break }
-  } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {
-    if ((rect = rects[i$1]).left != rect.right) { break }
-  } }
-  return rect
-}
-
-function measureCharInner(cm, prepared, ch, bias) {
-  var place = nodeAndOffsetInLineMap(prepared.map, ch, bias)
-  var node = place.node, start = place.start, end = place.end, collapse = place.collapse
-
-  var rect
-  if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
-    for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned
-      while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start }
-      while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end }
-      if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)
-        { rect = node.parentNode.getBoundingClientRect() }
-      else
-        { rect = getUsefulRect(range(node, start, end).getClientRects(), bias) }
-      if (rect.left || rect.right || start == 0) { break }
-      end = start
-      start = start - 1
-      collapse = "right"
-    }
-    if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect) }
-  } else { // If it is a widget, simply get the box for the whole widget.
-    if (start > 0) { collapse = bias = "right" }
-    var rects
-    if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
-      { rect = rects[bias == "right" ? rects.length - 1 : 0] }
-    else
-      { rect = node.getBoundingClientRect() }
-  }
-  if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
-    var rSpan = node.parentNode.getClientRects()[0]
-    if (rSpan)
-      { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom} }
-    else
-      { rect = nullRect }
-  }
-
-  var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top
-  var mid = (rtop + rbot) / 2
-  var heights = prepared.view.measure.heights
-  var i = 0
-  for (; i < heights.length - 1; i++)
-    { if (mid < heights[i]) { break } }
-  var top = i ? heights[i - 1] : 0, bot = heights[i]
-  var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
-                right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
-                top: top, bottom: bot}
-  if (!rect.left && !rect.right) { result.bogus = true }
-  if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot }
-
-  return result
-}
-
-// Work around problem with bounding client rects on ranges being
-// returned incorrectly when zoomed on IE10 and below.
-function maybeUpdateRectForZooming(measure, rect) {
-  if (!window.screen || screen.logicalXDPI == null ||
-      screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
-    { return rect }
-  var scaleX = screen.logicalXDPI / screen.deviceXDPI
-  var scaleY = screen.logicalYDPI / screen.deviceYDPI
-  return {left: rect.left * scaleX, right: rect.right * scaleX,
-          top: rect.top * scaleY, bottom: rect.bottom * scaleY}
-}
-
-function clearLineMeasurementCacheFor(lineView) {
-  if (lineView.measure) {
-    lineView.measure.cache = {}
-    lineView.measure.heights = null
-    if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
-      { lineView.measure.caches[i] = {} } }
-  }
-}
-
-function clearLineMeasurementCache(cm) {
-  cm.display.externalMeasure = null
-  removeChildren(cm.display.lineMeasure)
-  for (var i = 0; i < cm.display.view.length; i++)
-    { clearLineMeasurementCacheFor(cm.display.view[i]) }
-}
-
-function clearCaches(cm) {
-  clearLineMeasurementCache(cm)
-  cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null
-  if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true }
-  cm.display.lineNumChars = null
-}
-
-function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft }
-function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop }
-
-// Converts a {top, bottom, left, right} box from line-local
-// coordinates into another coordinate system. Context may be one of
-// "line", "div" (display.lineDiv), "local"./null (editor), "window",
-// or "page".
-function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {
-  if (!includeWidgets && lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) {
-    var size = widgetHeight(lineObj.widgets[i])
-    rect.top += size; rect.bottom += size
-  } } }
-  if (context == "line") { return rect }
-  if (!context) { context = "local" }
-  var yOff = heightAtLine(lineObj)
-  if (context == "local") { yOff += paddingTop(cm.display) }
-  else { yOff -= cm.display.viewOffset }
-  if (context == "page" || context == "window") {
-    var lOff = cm.display.lineSpace.getBoundingClientRect()
-    yOff += lOff.top + (context == "window" ? 0 : pageScrollY())
-    var xOff = lOff.left + (context == "window" ? 0 : pageScrollX())
-    rect.left += xOff; rect.right += xOff
-  }
-  rect.top += yOff; rect.bottom += yOff
-  return rect
-}
-
-// Coverts a box from "div" coords to another coordinate system.
-// Context may be "window", "page", "div", or "local"./null.
-function fromCoordSystem(cm, coords, context) {
-  if (context == "div") { return coords }
-  var left = coords.left, top = coords.top
-  // First move into "page" coordinate system
-  if (context == "page") {
-    left -= pageScrollX()
-    top -= pageScrollY()
-  } else if (context == "local" || !context) {
-    var localBox = cm.display.sizer.getBoundingClientRect()
-    left += localBox.left
-    top += localBox.top
-  }
-
-  var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect()
-  return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}
-}
-
-function charCoords(cm, pos, context, lineObj, bias) {
-  if (!lineObj) { lineObj = getLine(cm.doc, pos.line) }
-  return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)
-}
-
-// Returns a box for a given cursor position, which may have an
-// 'other' property containing the position of the secondary cursor
-// on a bidi boundary.
-function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
-  lineObj = lineObj || getLine(cm.doc, pos.line)
-  if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) }
-  function get(ch, right) {
-    var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight)
-    if (right) { m.left = m.right; } else { m.right = m.left }
-    return intoCoordSystem(cm, lineObj, m, context)
-  }
-  function getBidi(ch, partPos) {
-    var part = order[partPos], right = part.level % 2
-    if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
-      part = order[--partPos]
-      ch = bidiRight(part) - (part.level % 2 ? 0 : 1)
-      right = true
-    } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
-      part = order[++partPos]
-      ch = bidiLeft(part) - part.level % 2
-      right = false
-    }
-    if (right && ch == part.to && ch > part.from) { return get(ch - 1) }
-    return get(ch, right)
-  }
-  var order = getOrder(lineObj), ch = pos.ch
-  if (!order) { return get(ch) }
-  var partPos = getBidiPartAt(order, ch)
-  var val = getBidi(ch, partPos)
-  if (bidiOther != null) { val.other = getBidi(ch, bidiOther) }
-  return val
-}
-
-// Used to cheaply estimate the coordinates for a position. Used for
-// intermediate scroll updates.
-function estimateCoords(cm, pos) {
-  var left = 0
-  pos = clipPos(cm.doc, pos)
-  if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch }
-  var lineObj = getLine(cm.doc, pos.line)
-  var top = heightAtLine(lineObj) + paddingTop(cm.display)
-  return {left: left, right: left, top: top, bottom: top + lineObj.height}
-}
-
-// Positions returned by coordsChar contain some extra information.
-// xRel is the relative x position of the input coordinates compared
-// to the found position (so xRel > 0 means the coordinates are to
-// the right of the character position, for example). When outside
-// is true, that means the coordinates lie outside the line's
-// vertical range.
-function PosWithInfo(line, ch, outside, xRel) {
-  var pos = Pos(line, ch)
-  pos.xRel = xRel
-  if (outside) { pos.outside = true }
-  return pos
-}
-
-// Compute the character position closest to the given coordinates.
-// Input must be lineSpace-local ("div" coordinate system).
-function coordsChar(cm, x, y) {
-  var doc = cm.doc
-  y += cm.display.viewOffset
-  if (y < 0) { return PosWithInfo(doc.first, 0, true, -1) }
-  var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1
-  if (lineN > last)
-    { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1) }
-  if (x < 0) { x = 0 }
-
-  var lineObj = getLine(doc, lineN)
-  for (;;) {
-    var found = coordsCharInner(cm, lineObj, lineN, x, y)
-    var merged = collapsedSpanAtEnd(lineObj)
-    var mergedPos = merged && merged.find(0, true)
-    if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
-      { lineN = lineNo(lineObj = mergedPos.to.line) }
-    else
-      { return found }
-  }
-}
-
-function coordsCharInner(cm, lineObj, lineNo, x, y) {
-  var innerOff = y - heightAtLine(lineObj)
-  var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth
-  var preparedMeasure = prepareMeasureForLine(cm, lineObj)
-
-  function getX(ch) {
-    var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure)
-    wrongLine = true
-    if (innerOff > sp.bottom) { return sp.left - adjust }
-    else if (innerOff < sp.top) { return sp.left + adjust }
-    else { wrongLine = false }
-    return sp.left
-  }
-
-  var bidi = getOrder(lineObj), dist = lineObj.text.length
-  var from = lineLeft(lineObj), to = lineRight(lineObj)
-  var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine
-
-  if (x > toX) { return PosWithInfo(lineNo, to, toOutside, 1) }
-  // Do a binary search between these bounds.
-  for (;;) {
-    if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
-      var ch = x < fromX || x - fromX <= toX - x ? from : to
-      var outside = ch == from ? fromOutside : toOutside
-      var xDiff = x - (ch == from ? fromX : toX)
-      // This is a kludge to handle the case where the coordinates
-      // are after a line-wrapped line. We should replace it with a
-      // more general handling of cursor positions around line
-      // breaks. (Issue #4078)
-      if (toOutside && !bidi && !/\s/.test(lineObj.text.charAt(ch)) && xDiff > 0 &&
-          ch < lineObj.text.length && preparedMeasure.view.measure.heights.length > 1) {
-        var charSize = measureCharPrepared(cm, preparedMeasure, ch, "right")
-        if (innerOff <= charSize.bottom && innerOff >= charSize.top && Math.abs(x - charSize.right) < xDiff) {
-          outside = false
-          ch++
-          xDiff = x - charSize.right
-        }
-      }
-      while (isExtendingChar(lineObj.text.charAt(ch))) { ++ch }
-      var pos = PosWithInfo(lineNo, ch, outside, xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0)
-      return pos
-    }
-    var step = Math.ceil(dist / 2), middle = from + step
-    if (bidi) {
-      middle = from
-      for (var i = 0; i < step; ++i) { middle = moveVisually(lineObj, middle, 1) }
-    }
-    var middleX = getX(middle)
-    if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) { toX += 1000; } dist = step}
-    else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step}
-  }
-}
-
-var measureText
-// Compute the default text height.
-function textHeight(display) {
-  if (display.cachedTextHeight != null) { return display.cachedTextHeight }
-  if (measureText == null) {
-    measureText = elt("pre")
-    // Measure a bunch of lines, for browsers that compute
-    // fractional heights.
-    for (var i = 0; i < 49; ++i) {
-      measureText.appendChild(document.createTextNode("x"))
-      measureText.appendChild(elt("br"))
-    }
-    measureText.appendChild(document.createTextNode("x"))
-  }
-  removeChildrenAndAdd(display.measure, measureText)
-  var height = measureText.offsetHeight / 50
-  if (height > 3) { display.cachedTextHeight = height }
-  removeChildren(display.measure)
-  return height || 1
-}
-
-// Compute the default character width.
-function charWidth(display) {
-  if (display.cachedCharWidth != null) { return display.cachedCharWidth }
-  var anchor = elt("span", "xxxxxxxxxx")
-  var pre = elt("pre", [anchor])
-  removeChildrenAndAdd(display.measure, pre)
-  var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10
-  if (width > 2) { display.cachedCharWidth = width }
-  return width || 10
-}
-
-// Do a bulk-read of the DOM positions and sizes needed to draw the
-// view, so that we don't interleave reading and writing to the DOM.
-function getDimensions(cm) {
-  var d = cm.display, left = {}, width = {}
-  var gutterLeft = d.gutters.clientLeft
-  for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
-    left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft
-    width[cm.options.gutters[i]] = n.clientWidth
-  }
-  return {fixedPos: compensateForHScroll(d),
-          gutterTotalWidth: d.gutters.offsetWidth,
-          gutterLeft: left,
-          gutterWidth: width,
-          wrapperWidth: d.wrapper.clientWidth}
-}
-
-// Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
-// but using getBoundingClientRect to get a sub-pixel-accurate
-// result.
-function compensateForHScroll(display) {
-  return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left
-}
-
-// Returns a function that estimates the height of a line, to use as
-// first approximation until the line becomes visible (and is thus
-// properly measurable).
-function estimateHeight(cm) {
-  var th = textHeight(cm.display), wrapping = cm.options.lineWrapping
-  var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3)
-  return function (line) {
-    if (lineIsHidden(cm.doc, line)) { return 0 }
-
-    var widgetsHeight = 0
-    if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {
-      if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height }
-    } }
-
-    if (wrapping)
-      { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }
-    else
-      { return widgetsHeight + th }
-  }
-}
-
-function estimateLineHeights(cm) {
-  var doc = cm.doc, est = estimateHeight(cm)
-  doc.iter(function (line) {
-    var estHeight = est(line)
-    if (estHeight != line.height) { updateLineHeight(line, estHeight) }
-  })
-}
-
-// Given a mouse event, find the corresponding position. If liberal
-// is false, it checks whether a gutter or scrollbar was clicked,
-// and returns null if it was. forRect is used by rectangular
-// selections, and tries to estimate a character position even for
-// coordinates beyond the right of the text.
-function posFromMouse(cm, e, liberal, forRect) {
-  var display = cm.display
-  if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null }
-
-  var x, y, space = display.lineSpace.getBoundingClientRect()
-  // Fails unpredictably on IE[67] when mouse is dragged around quickly.
-  try { x = e.clientX - space.left; y = e.clientY - space.top }
-  catch (e) { return null }
-  var coords = coordsChar(cm, x, y), line
-  if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
-    var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length
-    coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff))
-  }
-  return coords
-}
-
-// Find the view element corresponding to a given line. Return null
-// when the line isn't visible.
-function findViewIndex(cm, n) {
-  if (n >= cm.display.viewTo) { return null }
-  n -= cm.display.viewFrom
-  if (n < 0) { return null }
-  var view = cm.display.view
-  for (var i = 0; i < view.length; i++) {
-    n -= view[i].size
-    if (n < 0) { return i }
-  }
-}
-
-function updateSelection(cm) {
-  cm.display.input.showSelection(cm.display.input.prepareSelection())
-}
-
-function prepareSelection(cm, primary) {
-  var doc = cm.doc, result = {}
-  var curFragment = result.cursors = document.createDocumentFragment()
-  var selFragment = result.selection = document.createDocumentFragment()
-
-  for (var i = 0; i < doc.sel.ranges.length; i++) {
-    if (primary === false && i == doc.sel.primIndex) { continue }
-    var range = doc.sel.ranges[i]
-    if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }
-    var collapsed = range.empty()
-    if (collapsed || cm.options.showCursorWhenSelecting)
-      { drawSelectionCursor(cm, range.head, curFragment) }
-    if (!collapsed)
-      { drawSelectionRange(cm, range, selFragment) }
-  }
-  return result
-}
-
-// Draws a cursor for the given range
-function drawSelectionCursor(cm, head, output) {
-  var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine)
-
-  var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"))
-  cursor.style.left = pos.left + "px"
-  cursor.style.top = pos.top + "px"
-  cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"
-
-  if (pos.other) {
-    // Secondary cursor, shown when on a 'jump' in bi-directional text
-    var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"))
-    otherCursor.style.display = ""
-    otherCursor.style.left = pos.other.left + "px"
-    otherCursor.style.top = pos.other.top + "px"
-    otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"
-  }
-}
-
-// Draws the given range as a highlighted selection
-function drawSelectionRange(cm, range, output) {
-  var display = cm.display, doc = cm.doc
-  var fragment = document.createDocumentFragment()
-  var padding = paddingH(cm.display), leftSide = padding.left
-  var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right
-
-  function add(left, top, width, bottom) {
-    if (top < 0) { top = 0 }
-    top = Math.round(top)
-    bottom = Math.round(bottom)
-    fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n                             top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n                             height: " + (bottom - top) + "px")))
-  }
-
-  function drawForLine(line, fromArg, toArg) {
-    var lineObj = getLine(doc, line)
-    var lineLen = lineObj.text.length
-    var start, end
-    function coords(ch, bias) {
-      return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
-    }
-
-    iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir) {
-      var leftPos = coords(from, "left"), rightPos, left, right
-      if (from == to) {
-        rightPos = leftPos
-        left = right = leftPos.left
-      } else {
-        rightPos = coords(to - 1, "right")
-        if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp }
-        left = leftPos.left
-        right = rightPos.right
-      }
-      if (fromArg == null && from == 0) { left = leftSide }
-      if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
-        add(left, leftPos.top, null, leftPos.bottom)
-        left = leftSide
-        if (leftPos.bottom < rightPos.top) { add(left, leftPos.bottom, null, rightPos.top) }
-      }
-      if (toArg == null && to == lineLen) { right = rightSide }
-      if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
-        { start = leftPos }
-      if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
-        { end = rightPos }
-      if (left < leftSide + 1) { left = leftSide }
-      add(left, rightPos.top, right - left, rightPos.bottom)
-    })
-    return {start: start, end: end}
-  }
-
-  var sFrom = range.from(), sTo = range.to()
-  if (sFrom.line == sTo.line) {
-    drawForLine(sFrom.line, sFrom.ch, sTo.ch)
-  } else {
-    var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line)
-    var singleVLine = visualLine(fromLine) == visualLine(toLine)
-    var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end
-    var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start
-    if (singleVLine) {
-      if (leftEnd.top < rightStart.top - 2) {
-        add(leftEnd.right, leftEnd.top, null, leftEnd.bottom)
-        add(leftSide, rightStart.top, rightStart.left, rightStart.bottom)
-      } else {
-        add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom)
-      }
-    }
-    if (leftEnd.bottom < rightStart.top)
-      { add(leftSide, leftEnd.bottom, null, rightStart.top) }
-  }
-
-  output.appendChild(fragment)
-}
-
-// Cursor-blinking
-function restartBlink(cm) {
-  if (!cm.state.focused) { return }
-  var display = cm.display
-  clearInterval(display.blinker)
-  var on = true
-  display.cursorDiv.style.visibility = ""
-  if (cm.options.cursorBlinkRate > 0)
-    { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; },
-      cm.options.cursorBlinkRate) }
-  else if (cm.options.cursorBlinkRate < 0)
-    { display.cursorDiv.style.visibility = "hidden" }
-}
-
-function ensureFocus(cm) {
-  if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm) }
-}
-
-function delayBlurEvent(cm) {
-  cm.state.delayingBlurEvent = true
-  setTimeout(function () { if (cm.state.delayingBlurEvent) {
-    cm.state.delayingBlurEvent = false
-    onBlur(cm)
-  } }, 100)
-}
-
-function onFocus(cm, e) {
-  if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false }
-
-  if (cm.options.readOnly == "nocursor") { return }
-  if (!cm.state.focused) {
-    signal(cm, "focus", cm, e)
-    cm.state.focused = true
-    addClass(cm.display.wrapper, "CodeMirror-focused")
-    // This test prevents this from firing when a context
-    // menu is closed (since the input reset would kill the
-    // select-all detection hack)
-    if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
-      cm.display.input.reset()
-      if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20) } // Issue #1730
-    }
-    cm.display.input.receivedFocus()
-  }
-  restartBlink(cm)
-}
-function onBlur(cm, e) {
-  if (cm.state.delayingBlurEvent) { return }
-
-  if (cm.state.focused) {
-    signal(cm, "blur", cm, e)
-    cm.state.focused = false
-    rmClass(cm.display.wrapper, "CodeMirror-focused")
-  }
-  clearInterval(cm.display.blinker)
-  setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false } }, 150)
-}
-
-// Re-align line numbers and gutter marks to compensate for
-// horizontal scrolling.
-function alignHorizontally(cm) {
-  var display = cm.display, view = display.view
-  if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }
-  var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft
-  var gutterW = display.gutters.offsetWidth, left = comp + "px"
-  for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {
-    if (cm.options.fixedGutter) {
-      if (view[i].gutter)
-        { view[i].gutter.style.left = left }
-      if (view[i].gutterBackground)
-        { view[i].gutterBackground.style.left = left }
-    }
-    var align = view[i].alignable
-    if (align) { for (var j = 0; j < align.length; j++)
-      { align[j].style.left = left } }
-  } }
-  if (cm.options.fixedGutter)
-    { display.gutters.style.left = (comp + gutterW) + "px" }
-}
-
-// Used to ensure that the line number gutter is still the right
-// size for the current document size. Returns true when an update
-// is needed.
-function maybeUpdateLineNumberWidth(cm) {
-  if (!cm.options.lineNumbers) { return false }
-  var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display
-  if (last.length != display.lineNumChars) {
-    var test = display.measure.appendChild(elt("div", [elt("div", last)],
-                                               "CodeMirror-linenumber CodeMirror-gutter-elt"))
-    var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW
-    display.lineGutter.style.width = ""
-    display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1
-    display.lineNumWidth = display.lineNumInnerWidth + padding
-    display.lineNumChars = display.lineNumInnerWidth ? last.length : -1
-    display.lineGutter.style.width = display.lineNumWidth + "px"
-    updateGutterSpace(cm)
-    return true
-  }
-  return false
-}
-
-// Read the actual heights of the rendered lines, and update their
-// stored heights to match.
-function updateHeightsInViewport(cm) {
-  var display = cm.display
-  var prevBottom = display.lineDiv.offsetTop
-  for (var i = 0; i < display.view.length; i++) {
-    var cur = display.view[i], height = (void 0)
-    if (cur.hidden) { continue }
-    if (ie && ie_version < 8) {
-      var bot = cur.node.offsetTop + cur.node.offsetHeight
-      height = bot - prevBottom
-      prevBottom = bot
-    } else {
-      var box = cur.node.getBoundingClientRect()
-      height = box.bottom - box.top
-    }
-    var diff = cur.line.height - height
-    if (height < 2) { height = textHeight(display) }
-    if (diff > .001 || diff < -.001) {
-      updateLineHeight(cur.line, height)
-      updateWidgetHeight(cur.line)
-      if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)
-        { updateWidgetHeight(cur.rest[j]) } }
-    }
-  }
-}
-
-// Read and store the height of line widgets associated with the
-// given line.
-function updateWidgetHeight(line) {
-  if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i)
-    { line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight } }
-}
-
-// Compute the lines that are visible in a given viewport (defaults
-// the the current scroll position). viewport may contain top,
-// height, and ensure (see op.scrollToPos) properties.
-function visibleLines(display, doc, viewport) {
-  var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop
-  top = Math.floor(top - paddingTop(display))
-  var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight
-
-  var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom)
-  // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
-  // forces those lines into the viewport (if possible).
-  if (viewport && viewport.ensure) {
-    var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line
-    if (ensureFrom < from) {
-      from = ensureFrom
-      to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)
-    } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
-      from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight)
-      to = ensureTo
-    }
-  }
-  return {from: from, to: Math.max(to, from + 1)}
-}
-
-// Sync the scrollable area and scrollbars, ensure the viewport
-// covers the visible area.
-function setScrollTop(cm, val) {
-  if (Math.abs(cm.doc.scrollTop - val) < 2) { return }
-  cm.doc.scrollTop = val
-  if (!gecko) { updateDisplaySimple(cm, {top: val}) }
-  if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val }
-  cm.display.scrollbars.setScrollTop(val)
-  if (gecko) { updateDisplaySimple(cm) }
-  startWorker(cm, 100)
-}
-// Sync scroller and scrollbar, ensure the gutter elements are
-// aligned.
-function setScrollLeft(cm, val, isScroller) {
-  if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) { return }
-  val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth)
-  cm.doc.scrollLeft = val
-  alignHorizontally(cm)
-  if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val }
-  cm.display.scrollbars.setScrollLeft(val)
-}
-
-// Since the delta values reported on mouse wheel events are
-// unstandardized between browsers and even browser versions, and
-// generally horribly unpredictable, this code starts by measuring
-// the scroll effect that the first few mouse wheel events have,
-// and, from that, detects the way it can convert deltas to pixel
-// offsets afterwards.
-//
-// The reason we want to know the amount a wheel event will scroll
-// is that it gives us a chance to update the display before the
-// actual scrolling happens, reducing flickering.
-
-var wheelSamples = 0;
-var wheelPixelsPerUnit = null;
-// Fill in a browser-detected starting value on browsers where we
-// know one. These don't have to be accurate -- the result of them
-// being wrong would just be a slight flicker on the first wheel
-// scroll (if it is large enough).
-if (ie) { wheelPixelsPerUnit = -.53 }
-else if (gecko) { wheelPixelsPerUnit = 15 }
-else if (chrome) { wheelPixelsPerUnit = -.7 }
-else if (safari) { wheelPixelsPerUnit = -1/3 }
-
-function wheelEventDelta(e) {
-  var dx = e.wheelDeltaX, dy = e.wheelDeltaY
-  if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail }
-  if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail }
-  else if (dy == null) { dy = e.wheelDelta }
-  return {x: dx, y: dy}
-}
-function wheelEventPixels(e) {
-  var delta = wheelEventDelta(e)
-  delta.x *= wheelPixelsPerUnit
-  delta.y *= wheelPixelsPerUnit
-  return delta
-}
-
-function onScrollWheel(cm, e) {
-  var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y
-
-  var display = cm.display, scroll = display.scroller
-  // Quit if there's nothing to scroll here
-  var canScrollX = scroll.scrollWidth > scroll.clientWidth
-  var canScrollY = scroll.scrollHeight > scroll.clientHeight
-  if (!(dx && canScrollX || dy && canScrollY)) { return }
-
-  // Webkit browsers on OS X abort momentum scrolls when the target
-  // of the scroll event is removed from the scrollable element.
-  // This hack (see related code in patchDisplay) makes sure the
-  // element is kept around.
-  if (dy && mac && webkit) {
-    outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
-      for (var i = 0; i < view.length; i++) {
-        if (view[i].node == cur) {
-          cm.display.currentWheelTarget = cur
-          break outer
-        }
-      }
-    }
-  }
-
-  // On some browsers, horizontal scrolling will cause redraws to
-  // happen before the gutter has been realigned, causing it to
-  // wriggle around in a most unseemly way. When we have an
-  // estimated pixels/delta value, we just handle horizontal
-  // scrolling entirely here. It'll be slightly off from native, but
-  // better than glitching out.
-  if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
-    if (dy && canScrollY)
-      { setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))) }
-    setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)))
-    // Only prevent default scrolling if vertical scrolling is
-    // actually possible. Otherwise, it causes vertical scroll
-    // jitter on OSX trackpads when deltaX is small and deltaY
-    // is large (issue #3579)
-    if (!dy || (dy && canScrollY))
-      { e_preventDefault(e) }
-    display.wheelStartX = null // Abort measurement, if in progress
-    return
-  }
-
-  // 'Project' the visible viewport to cover the area that is being
-  // scrolled into view (if we know enough to estimate it).
-  if (dy && wheelPixelsPerUnit != null) {
-    var pixels = dy * wheelPixelsPerUnit
-    var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight
-    if (pixels < 0) { top = Math.max(0, top + pixels - 50) }
-    else { bot = Math.min(cm.doc.height, bot + pixels + 50) }
-    updateDisplaySimple(cm, {top: top, bottom: bot})
-  }
-
-  if (wheelSamples < 20) {
-    if (display.wheelStartX == null) {
-      display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop
-      display.wheelDX = dx; display.wheelDY = dy
-      setTimeout(function () {
-        if (display.wheelStartX == null) { return }
-        var movedX = scroll.scrollLeft - display.wheelStartX
-        var movedY = scroll.scrollTop - display.wheelStartY
-        var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
-          (movedX && display.wheelDX && movedX / display.wheelDX)
-        display.wheelStartX = display.wheelStartY = null
-        if (!sample) { return }
-        wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1)
-        ++wheelSamples
-      }, 200)
-    } else {
-      display.wheelDX += dx; display.wheelDY += dy
-    }
-  }
-}
-
-// SCROLLBARS
-
-// Prepare DOM reads needed to update the scrollbars. Done in one
-// shot to minimize update/measure roundtrips.
-function measureForScrollbars(cm) {
-  var d = cm.display, gutterW = d.gutters.offsetWidth
-  var docH = Math.round(cm.doc.height + paddingVert(cm.display))
-  return {
-    clientHeight: d.scroller.clientHeight,
-    viewHeight: d.wrapper.clientHeight,
-    scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
-    viewWidth: d.wrapper.clientWidth,
-    barLeft: cm.options.fixedGutter ? gutterW : 0,
-    docHeight: docH,
-    scrollHeight: docH + scrollGap(cm) + d.barHeight,
-    nativeBarWidth: d.nativeBarWidth,
-    gutterWidth: gutterW
-  }
-}
-
-var NativeScrollbars = function(place, scroll, cm) {
-  this.cm = cm
-  var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar")
-  var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar")
-  place(vert); place(horiz)
-
-  on(vert, "scroll", function () {
-    if (vert.clientHeight) { scroll(vert.scrollTop, "vertical") }
-  })
-  on(horiz, "scroll", function () {
-    if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal") }
-  })
-
-  this.checkedZeroWidth = false
-  // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
-  if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px" }
-};
-
-NativeScrollbars.prototype.update = function (measure) {
-  var needsH = measure.scrollWidth > measure.clientWidth + 1
-  var needsV = measure.scrollHeight > measure.clientHeight + 1
-  var sWidth = measure.nativeBarWidth
-
-  if (needsV) {
-    this.vert.style.display = "block"
-    this.vert.style.bottom = needsH ? sWidth + "px" : "0"
-    var totalHeight = measure.viewHeight - (needsH ? sWidth : 0)
-    // A bug in IE8 can cause this value to be negative, so guard it.
-    this.vert.firstChild.style.height =
-      Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px"
-  } else {
-    this.vert.style.display = ""
-    this.vert.firstChild.style.height = "0"
-  }
-
-  if (needsH) {
-    this.horiz.style.display = "block"
-    this.horiz.style.right = needsV ? sWidth + "px" : "0"
-    this.horiz.style.left = measure.barLeft + "px"
-    var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0)
-    this.horiz.firstChild.style.width =
-      (measure.scrollWidth - measure.clientWidth + totalWidth) + "px"
-  } else {
-    this.horiz.style.display = ""
-    this.horiz.firstChild.style.width = "0"
-  }
-
-  if (!this.checkedZeroWidth && measure.clientHeight > 0) {
-    if (sWidth == 0) { this.zeroWidthHack() }
-    this.checkedZeroWidth = true
-  }
-
-  return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}
-};
-
-NativeScrollbars.prototype.setScrollLeft = function (pos) {
-  if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos }
-  if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz) }
-};
-
-NativeScrollbars.prototype.setScrollTop = function (pos) {
-  if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos }
-  if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert) }
-};
-
-NativeScrollbars.prototype.zeroWidthHack = function () {
-  var w = mac && !mac_geMountainLion ? "12px" : "18px"
-  this.horiz.style.height = this.vert.style.width = w
-  this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none"
-  this.disableHoriz = new Delayed
-  this.disableVert = new Delayed
-};
-
-NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay) {
-  bar.style.pointerEvents = "auto"
-  function maybeDisable() {
-    // To find out whether the scrollbar is still visible, we
-    // check whether the element under the pixel in the bottom
-    // left corner of the scrollbar box is the scrollbar box
-    // itself (when the bar is still visible) or its filler child
-    // (when the bar is hidden). If it is still visible, we keep
-    // it enabled, if it's hidden, we disable pointer events.
-    var box = bar.getBoundingClientRect()
-    var elt = document.elementFromPoint(box.left + 1, box.bottom - 1)
-    if (elt != bar) { bar.style.pointerEvents = "none" }
-    else { delay.set(1000, maybeDisable) }
-  }
-  delay.set(1000, maybeDisable)
-};
-
-NativeScrollbars.prototype.clear = function () {
-  var parent = this.horiz.parentNode
-  parent.removeChild(this.horiz)
-  parent.removeChild(this.vert)
-};
-
-var NullScrollbars = function () {};
-
-NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };
-NullScrollbars.prototype.setScrollLeft = function () {};
-NullScrollbars.prototype.setScrollTop = function () {};
-NullScrollbars.prototype.clear = function () {};
-
-function updateScrollbars(cm, measure) {
-  if (!measure) { measure = measureForScrollbars(cm) }
-  var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight
-  updateScrollbarsInner(cm, measure)
-  for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
-    if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
-      { updateHeightsInViewport(cm) }
-    updateScrollbarsInner(cm, measureForScrollbars(cm))
-    startWidth = cm.display.barWidth; startHeight = cm.display.barHeight
-  }
-}
-
-// Re-synchronize the fake scrollbars with the actual size of the
-// content.
-function updateScrollbarsInner(cm, measure) {
-  var d = cm.display
-  var sizes = d.scrollbars.update(measure)
-
-  d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px"
-  d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px"
-  d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent"
-
-  if (sizes.right && sizes.bottom) {
-    d.scrollbarFiller.style.display = "block"
-    d.scrollbarFiller.style.height = sizes.bottom + "px"
-    d.scrollbarFiller.style.width = sizes.right + "px"
-  } else { d.scrollbarFiller.style.display = "" }
-  if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
-    d.gutterFiller.style.display = "block"
-    d.gutterFiller.style.height = sizes.bottom + "px"
-    d.gutterFiller.style.width = measure.gutterWidth + "px"
-  } else { d.gutterFiller.style.display = "" }
-}
-
-var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars}
-
-function initScrollbars(cm) {
-  if (cm.display.scrollbars) {
-    cm.display.scrollbars.clear()
-    if (cm.display.scrollbars.addClass)
-      { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass) }
-  }
-
-  cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {
-    cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller)
-    // Prevent clicks in the scrollbars from killing focus
-    on(node, "mousedown", function () {
-      if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0) }
-    })
-    node.setAttribute("cm-not-content", "true")
-  }, function (pos, axis) {
-    if (axis == "horizontal") { setScrollLeft(cm, pos) }
-    else { setScrollTop(cm, pos) }
-  }, cm)
-  if (cm.display.scrollbars.addClass)
-    { addClass(cm.display.wrapper, cm.display.scrollbars.addClass) }
-}
-
-// SCROLLING THINGS INTO VIEW
-
-// If an editor sits on the top or bottom of the window, partially
-// scrolled out of view, this ensures that the cursor is visible.
-function maybeScrollWindow(cm, coords) {
-  if (signalDOMEvent(cm, "scrollCursorIntoView")) { return }
-
-  var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null
-  if (coords.top + box.top < 0) { doScroll = true }
-  else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false }
-  if (doScroll != null && !phantom) {
-    var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n                         top: " + (coords.top - display.viewOffset - paddingTop(cm.display)) + "px;\n                         height: " + (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px;\n                         left: " + (coords.left) + "px; width: 2px;"))
-    cm.display.lineSpace.appendChild(scrollNode)
-    scrollNode.scrollIntoView(doScroll)
-    cm.display.lineSpace.removeChild(scrollNode)
-  }
-}
-
-// Scroll a given position into view (immediately), verifying that
-// it actually became visible (as line heights are accurately
-// measured, the position of something may 'drift' during drawing).
-function scrollPosIntoView(cm, pos, end, margin) {
-  if (margin == null) { margin = 0 }
-  var coords
-  for (var limit = 0; limit < 5; limit++) {
-    var changed = false
-    coords = cursorCoords(cm, pos)
-    var endCoords = !end || end == pos ? coords : cursorCoords(cm, end)
-    var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
-                                       Math.min(coords.top, endCoords.top) - margin,
-                                       Math.max(coords.left, endCoords.left),
-                                       Math.max(coords.bottom, endCoords.bottom) + margin)
-    var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft
-    if (scrollPos.scrollTop != null) {
-      setScrollTop(cm, scrollPos.scrollTop)
-      if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true }
-    }
-    if (scrollPos.scrollLeft != null) {
-      setScrollLeft(cm, scrollPos.scrollLeft)
-      if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true }
-    }
-    if (!changed) { break }
-  }
-  return coords
-}
-
-// Scroll a given set of coordinates into view (immediately).
-function scrollIntoView(cm, x1, y1, x2, y2) {
-  var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2)
-  if (scrollPos.scrollTop != null) { setScrollTop(cm, scrollPos.scrollTop) }
-  if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) }
-}
-
-// Calculate a new scroll position needed to scroll the given
-// rectangle into view. Returns an object with scrollTop and
-// scrollLeft properties. When these are undefined, the
-// vertical/horizontal position does not need to be adjusted.
-function calculateScrollPos(cm, x1, y1, x2, y2) {
-  var display = cm.display, snapMargin = textHeight(cm.display)
-  if (y1 < 0) { y1 = 0 }
-  var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop
-  var screen = displayHeight(cm), result = {}
-  if (y2 - y1 > screen) { y2 = y1 + screen }
-  var docBottom = cm.doc.height + paddingVert(display)
-  var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin
-  if (y1 < screentop) {
-    result.scrollTop = atTop ? 0 : y1
-  } else if (y2 > screentop + screen) {
-    var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen)
-    if (newTop != screentop) { result.scrollTop = newTop }
-  }
-
-  var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft
-  var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0)
-  var tooWide = x2 - x1 > screenw
-  if (tooWide) { x2 = x1 + screenw }
-  if (x1 < 10)
-    { result.scrollLeft = 0 }
-  else if (x1 < screenleft)
-    { result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10)) }
-  else if (x2 > screenw + screenleft - 3)
-    { result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw }
-  return result
-}
-
-// Store a relative adjustment to the scroll position in the current
-// operation (to be applied when the operation finishes).
-function addToScrollPos(cm, left, top) {
-  if (left != null || top != null) { resolveScrollToPos(cm) }
-  if (left != null)
-    { cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left }
-  if (top != null)
-    { cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top }
-}
-
-// Make sure that at the end of the operation the current cursor is
-// shown.
-function ensureCursorVisible(cm) {
-  resolveScrollToPos(cm)
-  var cur = cm.getCursor(), from = cur, to = cur
-  if (!cm.options.lineWrapping) {
-    from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur
-    to = Pos(cur.line, cur.ch + 1)
-  }
-  cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true}
-}
-
-// When an operation has its scrollToPos property set, and another
-// scroll action is applied before the end of the operation, this
-// 'simulates' scrolling that position into view in a cheap way, so
-// that the effect of intermediate scroll commands is not ignored.
-function resolveScrollToPos(cm) {
-  var range = cm.curOp.scrollToPos
-  if (range) {
-    cm.curOp.scrollToPos = null
-    var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to)
-    var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
-                                  Math.min(from.top, to.top) - range.margin,
-                                  Math.max(from.right, to.right),
-                                  Math.max(from.bottom, to.bottom) + range.margin)
-    cm.scrollTo(sPos.scrollLeft, sPos.scrollTop)
-  }
-}
-
-// Operations are used to wrap a series of changes to the editor
-// state in such a way that each change won't have to update the
-// cursor and display (which would be awkward, slow, and
-// error-prone). Instead, display updates are batched and then all
-// combined and executed at once.
-
-var nextOpId = 0
-// Start a new operation.
-function startOperation(cm) {
-  cm.curOp = {
-    cm: cm,
-    viewChanged: false,      // Flag that indicates that lines might need to be redrawn
-    startHeight: cm.doc.height, // Used to detect need to update scrollbar
-    forceUpdate: false,      // Used to force a redraw
-    updateInput: null,       // Whether to reset the input textarea
-    typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
-    changeObjs: null,        // Accumulated changes, for firing change events
-    cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
-    cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
-    selectionChanged: false, // Whether the selection needs to be redrawn
-    updateMaxLine: false,    // Set when the widest line needs to be determined anew
-    scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
-    scrollToPos: null,       // Used to scroll to a specific position
-    focus: false,
-    id: ++nextOpId           // Unique ID
-  }
-  pushOperation(cm.curOp)
-}
-
-// Finish an operation, updating the display and signalling delayed events
-function endOperation(cm) {
-  var op = cm.curOp
-  finishOperation(op, function (group) {
-    for (var i = 0; i < group.ops.length; i++)
-      { group.ops[i].cm.curOp = null }
-    endOperations(group)
-  })
-}
-
-// The DOM updates done when an operation finishes are batched so
-// that the minimum number of relayouts are required.
-function endOperations(group) {
-  var ops = group.ops
-  for (var i = 0; i < ops.length; i++) // Read DOM
-    { endOperation_R1(ops[i]) }
-  for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)
-    { endOperation_W1(ops[i$1]) }
-  for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM
-    { endOperation_R2(ops[i$2]) }
-  for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)
-    { endOperation_W2(ops[i$3]) }
-  for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM
-    { endOperation_finish(ops[i$4]) }
-}
-
-function endOperation_R1(op) {
-  var cm = op.cm, display = cm.display
-  maybeClipScrollbars(cm)
-  if (op.updateMaxLine) { findMaxLine(cm) }
-
-  op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
-    op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
-                       op.scrollToPos.to.line >= display.viewTo) ||
-    display.maxLineChanged && cm.options.lineWrapping
-  op.update = op.mustUpdate &&
-    new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate)
-}
-
-function endOperation_W1(op) {
-  op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update)
-}
-
-function endOperation_R2(op) {
-  var cm = op.cm, display = cm.display
-  if (op.updatedDisplay) { updateHeightsInViewport(cm) }
-
-  op.barMeasure = measureForScrollbars(cm)
-
-  // If the max line changed since it was last measured, measure it,
-  // and ensure the document's width matches it.
-  // updateDisplay_W2 will use these properties to do the actual resizing
-  if (display.maxLineChanged && !cm.options.lineWrapping) {
-    op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3
-    cm.display.sizerWidth = op.adjustWidthTo
-    op.barMeasure.scrollWidth =
-      Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth)
-    op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm))
-  }
-
-  if (op.updatedDisplay || op.selectionChanged)
-    { op.preparedSelection = display.input.prepareSelection(op.focus) }
-}
-
-function endOperation_W2(op) {
-  var cm = op.cm
-
-  if (op.adjustWidthTo != null) {
-    cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"
-    if (op.maxScrollLeft < cm.doc.scrollLeft)
-      { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true) }
-    cm.display.maxLineChanged = false
-  }
-
-  var takeFocus = op.focus && op.focus == activeElt() && (!document.hasFocus || document.hasFocus())
-  if (op.preparedSelection)
-    { cm.display.input.showSelection(op.preparedSelection, takeFocus) }
-  if (op.updatedDisplay || op.startHeight != cm.doc.height)
-    { updateScrollbars(cm, op.barMeasure) }
-  if (op.updatedDisplay)
-    { setDocumentHeight(cm, op.barMeasure) }
-
-  if (op.selectionChanged) { restartBlink(cm) }
-
-  if (cm.state.focused && op.updateInput)
-    { cm.display.input.reset(op.typing) }
-  if (takeFocus) { ensureFocus(op.cm) }
-}
-
-function endOperation_finish(op) {
-  var cm = op.cm, display = cm.display, doc = cm.doc
-
-  if (op.updatedDisplay) { postUpdateDisplay(cm, op.update) }
-
-  // Abort mouse wheel delta measurement, when scrolling explicitly
-  if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
-    { display.wheelStartX = display.wheelStartY = null }
-
-  // Propagate the scroll position to the actual DOM scroller
-  if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {
-    doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop))
-    display.scrollbars.setScrollTop(doc.scrollTop)
-    display.scroller.scrollTop = doc.scrollTop
-  }
-  if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {
-    doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft))
-    display.scrollbars.setScrollLeft(doc.scrollLeft)
-    display.scroller.scrollLeft = doc.scrollLeft
-    alignHorizontally(cm)
-  }
-  // If we need to scroll a specific position into view, do so.
-  if (op.scrollToPos) {
-    var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
-                                   clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin)
-    if (op.scrollToPos.isCursor && cm.state.focused) { maybeScrollWindow(cm, coords) }
-  }
-
-  // Fire events for markers that are hidden/unidden by editing or
-  // undoing
-  var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers
-  if (hidden) { for (var i = 0; i < hidden.length; ++i)
-    { if (!hidden[i].lines.length) { signal(hidden[i], "hide") } } }
-  if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)
-    { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide") } } }
-
-  if (display.wrapper.offsetHeight)
-    { doc.scrollTop = cm.display.scroller.scrollTop }
-
-  // Fire change events, and delayed event handlers
-  if (op.changeObjs)
-    { signal(cm, "changes", cm, op.changeObjs) }
-  if (op.update)
-    { op.update.finish() }
-}
-
-// Run the given function in an operation
-function runInOp(cm, f) {
-  if (cm.curOp) { return f() }
-  startOperation(cm)
-  try { return f() }
-  finally { endOperation(cm) }
-}
-// Wraps a function in an operation. Returns the wrapped function.
-function operation(cm, f) {
-  return function() {
-    if (cm.curOp) { return f.apply(cm, arguments) }
-    startOperation(cm)
-    try { return f.apply(cm, arguments) }
-    finally { endOperation(cm) }
-  }
-}
-// Used to add methods to editor and doc instances, wrapping them in
-// operations.
-function methodOp(f) {
-  return function() {
-    if (this.curOp) { return f.apply(this, arguments) }
-    startOperation(this)
-    try { return f.apply(this, arguments) }
-    finally { endOperation(this) }
-  }
-}
-function docMethodOp(f) {
-  return function() {
-    var cm = this.cm
-    if (!cm || cm.curOp) { return f.apply(this, arguments) }
-    startOperation(cm)
-    try { return f.apply(this, arguments) }
-    finally { endOperation(cm) }
-  }
-}
-
-// Updates the display.view data structure for a given change to the
-// document. From and to are in pre-change coordinates. Lendiff is
-// the amount of lines added or subtracted by the change. This is
-// used for changes that span multiple lines, or change the way
-// lines are divided into visual lines. regLineChange (below)
-// registers single-line changes.
-function regChange(cm, from, to, lendiff) {
-  if (from == null) { from = cm.doc.first }
-  if (to == null) { to = cm.doc.first + cm.doc.size }
-  if (!lendiff) { lendiff = 0 }
-
-  var display = cm.display
-  if (lendiff && to < display.viewTo &&
-      (display.updateLineNumbers == null || display.updateLineNumbers > from))
-    { display.updateLineNumbers = from }
-
-  cm.curOp.viewChanged = true
-
-  if (from >= display.viewTo) { // Change after
-    if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
-      { resetView(cm) }
-  } else if (to <= display.viewFrom) { // Change before
-    if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
-      resetView(cm)
-    } else {
-      display.viewFrom += lendiff
-      display.viewTo += lendiff
-    }
-  } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
-    resetView(cm)
-  } else if (from <= display.viewFrom) { // Top overlap
-    var cut = viewCuttingPoint(cm, to, to + lendiff, 1)
-    if (cut) {
-      display.view = display.view.slice(cut.index)
-      display.viewFrom = cut.lineN
-      display.viewTo += lendiff
-    } else {
-      resetView(cm)
-    }
-  } else if (to >= display.viewTo) { // Bottom overlap
-    var cut$1 = viewCuttingPoint(cm, from, from, -1)
-    if (cut$1) {
-      display.view = display.view.slice(0, cut$1.index)
-      display.viewTo = cut$1.lineN
-    } else {
-      resetView(cm)
-    }
-  } else { // Gap in the middle
-    var cutTop = viewCuttingPoint(cm, from, from, -1)
-    var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1)
-    if (cutTop && cutBot) {
-      display.view = display.view.slice(0, cutTop.index)
-        .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
-        .concat(display.view.slice(cutBot.index))
-      display.viewTo += lendiff
-    } else {
-      resetView(cm)
-    }
-  }
-
-  var ext = display.externalMeasured
-  if (ext) {
-    if (to < ext.lineN)
-      { ext.lineN += lendiff }
-    else if (from < ext.lineN + ext.size)
-      { display.externalMeasured = null }
-  }
-}
-
-// Register a change to a single line. Type must be one of "text",
-// "gutter", "class", "widget"
-function regLineChange(cm, line, type) {
-  cm.curOp.viewChanged = true
-  var display = cm.display, ext = cm.display.externalMeasured
-  if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
-    { display.externalMeasured = null }
-
-  if (line < display.viewFrom || line >= display.viewTo) { return }
-  var lineView = display.view[findViewIndex(cm, line)]
-  if (lineView.node == null) { return }
-  var arr = lineView.changes || (lineView.changes = [])
-  if (indexOf(arr, type) == -1) { arr.push(type) }
-}
-
-// Clear the view.
-function resetView(cm) {
-  cm.display.viewFrom = cm.display.viewTo = cm.doc.first
-  cm.display.view = []
-  cm.display.viewOffset = 0
-}
-
-function viewCuttingPoint(cm, oldN, newN, dir) {
-  var index = findViewIndex(cm, oldN), diff, view = cm.display.view
-  if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
-    { return {index: index, lineN: newN} }
-  var n = cm.display.viewFrom
-  for (var i = 0; i < index; i++)
-    { n += view[i].size }
-  if (n != oldN) {
-    if (dir > 0) {
-      if (index == view.length - 1) { return null }
-      diff = (n + view[index].size) - oldN
-      index++
-    } else {
-      diff = n - oldN
-    }
-    oldN += diff; newN += diff
-  }
-  while (visualLineNo(cm.doc, newN) != newN) {
-    if (index == (dir < 0 ? 0 : view.length - 1)) { return null }
-    newN += dir * view[index - (dir < 0 ? 1 : 0)].size
-    index += dir
-  }
-  return {index: index, lineN: newN}
-}
-
-// Force the view to cover a given range, adding empty view element
-// or clipping off existing ones as needed.
-function adjustView(cm, from, to) {
-  var display = cm.display, view = display.view
-  if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
-    display.view = buildViewArray(cm, from, to)
-    display.viewFrom = from
-  } else {
-    if (display.viewFrom > from)
-      { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view) }
-    else if (display.viewFrom < from)
-      { display.view = display.view.slice(findViewIndex(cm, from)) }
-    display.viewFrom = from
-    if (display.viewTo < to)
-      { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)) }
-    else if (display.viewTo > to)
-      { display.view = display.view.slice(0, findViewIndex(cm, to)) }
-  }
-  display.viewTo = to
-}
-
-// Count the number of lines in the view whose DOM representation is
-// out of date (or nonexistent).
-function countDirtyView(cm) {
-  var view = cm.display.view, dirty = 0
-  for (var i = 0; i < view.length; i++) {
-    var lineView = view[i]
-    if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty }
-  }
-  return dirty
-}
-
-// HIGHLIGHT WORKER
-
-function startWorker(cm, time) {
-  if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
-    { cm.state.highlight.set(time, bind(highlightWorker, cm)) }
-}
-
-function highlightWorker(cm) {
-  var doc = cm.doc
-  if (doc.frontier < doc.first) { doc.frontier = doc.first }
-  if (doc.frontier >= cm.display.viewTo) { return }
-  var end = +new Date + cm.options.workTime
-  var state = copyState(doc.mode, getStateBefore(cm, doc.frontier))
-  var changedLines = []
-
-  doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
-    if (doc.frontier >= cm.display.viewFrom) { // Visible
-      var oldStyles = line.styles, tooLong = line.text.length > cm.options.maxHighlightLength
-      var highlighted = highlightLine(cm, line, tooLong ? copyState(doc.mode, state) : state, true)
-      line.styles = highlighted.styles
-      var oldCls = line.styleClasses, newCls = highlighted.classes
-      if (newCls) { line.styleClasses = newCls }
-      else if (oldCls) { line.styleClasses = null }
-      var ischange = !oldStyles || oldStyles.length != line.styles.length ||
-        oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass)
-      for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i] }
-      if (ischange) { changedLines.push(doc.frontier) }
-      line.stateAfter = tooLong ? state : copyState(doc.mode, state)
-    } else {
-      if (line.text.length <= cm.options.maxHighlightLength)
-        { processLine(cm, line.text, state) }
-      line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null
-    }
-    ++doc.frontier
-    if (+new Date > end) {
-      startWorker(cm, cm.options.workDelay)
-      return true
-    }
-  })
-  if (changedLines.length) { runInOp(cm, function () {
-    for (var i = 0; i < changedLines.length; i++)
-      { regLineChange(cm, changedLines[i], "text") }
-  }) }
-}
-
-// DISPLAY DRAWING
-
-var DisplayUpdate = function(cm, viewport, force) {
-  var display = cm.display
-
-  this.viewport = viewport
-  // Store some values that we'll need later (but don't want to force a relayout for)
-  this.visible = visibleLines(display, cm.doc, viewport)
-  this.editorIsHidden = !display.wrapper.offsetWidth
-  this.wrapperHeight = display.wrapper.clientHeight
-  this.wrapperWidth = display.wrapper.clientWidth
-  this.oldDisplayWidth = displayWidth(cm)
-  this.force = force
-  this.dims = getDimensions(cm)
-  this.events = []
-};
-
-DisplayUpdate.prototype.signal = function (emitter, type) {
-  if (hasHandler(emitter, type))
-    { this.events.push(arguments) }
-};
-DisplayUpdate.prototype.finish = function () {
-    var this$1 = this;
-
-  for (var i = 0; i < this.events.length; i++)
-    { signal.apply(null, this$1.events[i]) }
-};
-
-function maybeClipScrollbars(cm) {
-  var display = cm.display
-  if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
-    display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth
-    display.heightForcer.style.height = scrollGap(cm) + "px"
-    display.sizer.style.marginBottom = -display.nativeBarWidth + "px"
-    display.sizer.style.borderRightWidth = scrollGap(cm) + "px"
-    display.scrollbarsClipped = true
-  }
-}
-
-// Does the actual updating of the line display. Bails out
-// (returning false) when there is nothing to be done and forced is
-// false.
-function updateDisplayIfNeeded(cm, update) {
-  var display = cm.display, doc = cm.doc
-
-  if (update.editorIsHidden) {
-    resetView(cm)
-    return false
-  }
-
-  // Bail out if the visible area is already rendered and nothing changed.
-  if (!update.force &&
-      update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
-      (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
-      display.renderedView == display.view && countDirtyView(cm) == 0)
-    { return false }
-
-  if (maybeUpdateLineNumberWidth(cm)) {
-    resetView(cm)
-    update.dims = getDimensions(cm)
-  }
-
-  // Compute a suitable new viewport (from & to)
-  var end = doc.first + doc.size
-  var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first)
-  var to = Math.min(end, update.visible.to + cm.options.viewportMargin)
-  if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom) }
-  if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo) }
-  if (sawCollapsedSpans) {
-    from = visualLineNo(cm.doc, from)
-    to = visualLineEndNo(cm.doc, to)
-  }
-
-  var different = from != display.viewFrom || to != display.viewTo ||
-    display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth
-  adjustView(cm, from, to)
-
-  display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom))
-  // Position the mover div to align with the current scroll position
-  cm.display.mover.style.top = display.viewOffset + "px"
-
-  var toUpdate = countDirtyView(cm)
-  if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
-      (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
-    { return false }
-
-  // For big changes, we hide the enclosing element during the
-  // update, since that speeds up the operations on most browsers.
-  var focused = activeElt()
-  if (toUpdate > 4) { display.lineDiv.style.display = "none" }
-  patchDisplay(cm, display.updateLineNumbers, update.dims)
-  if (toUpdate > 4) { display.lineDiv.style.display = "" }
-  display.renderedView = display.view
-  // There might have been a widget with a focused element that got
-  // hidden or updated, if so re-focus it.
-  if (focused && activeElt() != focused && focused.offsetHeight) { focused.focus() }
-
-  // Prevent selection and cursors from interfering with the scroll
-  // width and height.
-  removeChildren(display.cursorDiv)
-  removeChildren(display.selectionDiv)
-  display.gutters.style.height = display.sizer.style.minHeight = 0
-
-  if (different) {
-    display.lastWrapHeight = update.wrapperHeight
-    display.lastWrapWidth = update.wrapperWidth
-    startWorker(cm, 400)
-  }
-
-  display.updateLineNumbers = null
-
-  return true
-}
-
-function postUpdateDisplay(cm, update) {
-  var viewport = update.viewport
-
-  for (var first = true;; first = false) {
-    if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
-      // Clip forced viewport to actual scrollable area.
-      if (viewport && viewport.top != null)
-        { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)} }
-      // Updated line heights might result in the drawn area not
-      // actually covering the viewport. Keep looping until it does.
-      update.visible = visibleLines(cm.display, cm.doc, viewport)
-      if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
-        { break }
-    }
-    if (!updateDisplayIfNeeded(cm, update)) { break }
-    updateHeightsInViewport(cm)
-    var barMeasure = measureForScrollbars(cm)
-    updateSelection(cm)
-    updateScrollbars(cm, barMeasure)
-    setDocumentHeight(cm, barMeasure)
-  }
-
-  update.signal(cm, "update", cm)
-  if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
-    update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo)
-    cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo
-  }
-}
-
-function updateDisplaySimple(cm, viewport) {
-  var update = new DisplayUpdate(cm, viewport)
-  if (updateDisplayIfNeeded(cm, update)) {
-    updateHeightsInViewport(cm)
-    postUpdateDisplay(cm, update)
-    var barMeasure = measureForScrollbars(cm)
-    updateSelection(cm)
-    updateScrollbars(cm, barMeasure)
-    setDocumentHeight(cm, barMeasure)
-    update.finish()
-  }
-}
-
-// Sync the actual display DOM structure with display.view, removing
-// nodes for lines that are no longer in view, and creating the ones
-// that are not there yet, and updating the ones that are out of
-// date.
-function patchDisplay(cm, updateNumbersFrom, dims) {
-  var display = cm.display, lineNumbers = cm.options.lineNumbers
-  var container = display.lineDiv, cur = container.firstChild
-
-  function rm(node) {
-    var next = node.nextSibling
-    // Works around a throw-scroll bug in OS X Webkit
-    if (webkit && mac && cm.display.currentWheelTarget == node)
-      { node.style.display = "none" }
-    else
-      { node.parentNode.removeChild(node) }
-    return next
-  }
-
-  var view = display.view, lineN = display.viewFrom
-  // Loop over the elements in the view, syncing cur (the DOM nodes
-  // in display.lineDiv) with the view as we go.
-  for (var i = 0; i < view.length; i++) {
-    var lineView = view[i]
-    if (lineView.hidden) {
-    } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
-      var node = buildLineElement(cm, lineView, lineN, dims)
-      container.insertBefore(node, cur)
-    } else { // Already drawn
-      while (cur != lineView.node) { cur = rm(cur) }
-      var updateNumber = lineNumbers && updateNumbersFrom != null &&
-        updateNumbersFrom <= lineN && lineView.lineNumber
-      if (lineView.changes) {
-        if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false }
-        updateLineForChanges(cm, lineView, lineN, dims)
-      }
-      if (updateNumber) {
-        removeChildren(lineView.lineNumber)
-        lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)))
-      }
-      cur = lineView.node.nextSibling
-    }
-    lineN += lineView.size
-  }
-  while (cur) { cur = rm(cur) }
-}
-
-function updateGutterSpace(cm) {
-  var width = cm.display.gutters.offsetWidth
-  cm.display.sizer.style.marginLeft = width + "px"
-}
-
-function setDocumentHeight(cm, measure) {
-  cm.display.sizer.style.minHeight = measure.docHeight + "px"
-  cm.display.heightForcer.style.top = measure.docHeight + "px"
-  cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px"
-}
-
-// Rebuild the gutter elements, ensure the margin to the left of the
-// code matches their width.
-function updateGutters(cm) {
-  var gutters = cm.display.gutters, specs = cm.options.gutters
-  removeChildren(gutters)
-  var i = 0
-  for (; i < specs.length; ++i) {
-    var gutterClass = specs[i]
-    var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass))
-    if (gutterClass == "CodeMirror-linenumbers") {
-      cm.display.lineGutter = gElt
-      gElt.style.width = (cm.display.lineNumWidth || 1) + "px"
-    }
-  }
-  gutters.style.display = i ? "" : "none"
-  updateGutterSpace(cm)
-}
-
-// Make sure the gutters options contains the element
-// "CodeMirror-linenumbers" when the lineNumbers option is true.
-function setGuttersForLineNumbers(options) {
-  var found = indexOf(options.gutters, "CodeMirror-linenumbers")
-  if (found == -1 && options.lineNumbers) {
-    options.gutters = options.gutters.concat(["CodeMirror-linenumbers"])
-  } else if (found > -1 && !options.lineNumbers) {
-    options.gutters = options.gutters.slice(0)
-    options.gutters.splice(found, 1)
-  }
-}
-
-// Selection objects are immutable. A new one is created every time
-// the selection changes. A selection is one or more non-overlapping
-// (and non-touching) ranges, sorted, and an integer that indicates
-// which one is the primary selection (the one that's scrolled into
-// view, that getCursor returns, etc).
-function Selection(ranges, primIndex) {
-  this.ranges = ranges
-  this.primIndex = primIndex
-}
-
-Selection.prototype = {
-  primary: function() { return this.ranges[this.primIndex] },
-  equals: function(other) {
-    var this$1 = this;
-
-    if (other == this) { return true }
-    if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }
-    for (var i = 0; i < this.ranges.length; i++) {
-      var here = this$1.ranges[i], there = other.ranges[i]
-      if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) { return false }
-    }
-    return true
-  },
-  deepCopy: function() {
-    var this$1 = this;
-
-    var out = []
-    for (var i = 0; i < this.ranges.length; i++)
-      { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)) }
-    return new Selection(out, this.primIndex)
-  },
-  somethingSelected: function() {
-    var this$1 = this;
-
-    for (var i = 0; i < this.ranges.length; i++)
-      { if (!this$1.ranges[i].empty()) { return true } }
-    return false
-  },
-  contains: function(pos, end) {
-    var this$1 = this;
-
-    if (!end) { end = pos }
-    for (var i = 0; i < this.ranges.length; i++) {
-      var range = this$1.ranges[i]
-      if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
-        { return i }
-    }
-    return -1
-  }
-}
-
-function Range(anchor, head) {
-  this.anchor = anchor; this.head = head
-}
-
-Range.prototype = {
-  from: function() { return minPos(this.anchor, this.head) },
-  to: function() { return maxPos(this.anchor, this.head) },
-  empty: function() {
-    return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch
-  }
-}
-
-// Take an unsorted, potentially overlapping set of ranges, and
-// build a selection out of it. 'Consumes' ranges array (modifying
-// it).
-function normalizeSelection(ranges, primIndex) {
-  var prim = ranges[primIndex]
-  ranges.sort(function (a, b) { return cmp(a.from(), b.from()); })
-  primIndex = indexOf(ranges, prim)
-  for (var i = 1; i < ranges.length; i++) {
-    var cur = ranges[i], prev = ranges[i - 1]
-    if (cmp(prev.to(), cur.from()) >= 0) {
-      var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to())
-      var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head
-      if (i <= primIndex) { --primIndex }
-      ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to))
-    }
-  }
-  return new Selection(ranges, primIndex)
-}
-
-function simpleSelection(anchor, head) {
-  return new Selection([new Range(anchor, head || anchor)], 0)
-}
-
-// Compute the position of the end of a change (its 'to' property
-// refers to the pre-change end).
-function changeEnd(change) {
-  if (!change.text) { return change.to }
-  return Pos(change.from.line + change.text.length - 1,
-             lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))
-}
-
-// Adjust a position to refer to the post-change position of the
-// same text, or the end of the change if the change covers it.
-function adjustForChange(pos, change) {
-  if (cmp(pos, change.from) < 0) { return pos }
-  if (cmp(pos, change.to) <= 0) { return changeEnd(change) }
-
-  var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch
-  if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch }
-  return Pos(line, ch)
-}
-
-function computeSelAfterChange(doc, change) {
-  var out = []
-  for (var i = 0; i < doc.sel.ranges.length; i++) {
-    var range = doc.sel.ranges[i]
-    out.push(new Range(adjustForChange(range.anchor, change),
-                       adjustForChange(range.head, change)))
-  }
-  return normalizeSelection(out, doc.sel.primIndex)
-}
-
-function offsetPos(pos, old, nw) {
-  if (pos.line == old.line)
-    { return Pos(nw.line, pos.ch - old.ch + nw.ch) }
-  else
-    { return Pos(nw.line + (pos.line - old.line), pos.ch) }
-}
-
-// Used by replaceSelections to allow moving the selection to the
-// start or around the replaced test. Hint may be "start" or "around".
-function computeReplacedSel(doc, changes, hint) {
-  var out = []
-  var oldPrev = Pos(doc.first, 0), newPrev = oldPrev
-  for (var i = 0; i < changes.length; i++) {
-    var change = changes[i]
-    var from = offsetPos(change.from, oldPrev, newPrev)
-    var to = offsetPos(changeEnd(change), oldPrev, newPrev)
-    oldPrev = change.to
-    newPrev = to
-    if (hint == "around") {
-      var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0
-      out[i] = new Range(inv ? to : from, inv ? from : to)
-    } else {
-      out[i] = new Range(from, from)
-    }
-  }
-  return new Selection(out, doc.sel.primIndex)
-}
-
-// Used to get the editor into a consistent state again when options change.
-
-function loadMode(cm) {
-  cm.doc.mode = getMode(cm.options, cm.doc.modeOption)
-  resetModeState(cm)
-}
-
-function resetModeState(cm) {
-  cm.doc.iter(function (line) {
-    if (line.stateAfter) { line.stateAfter = null }
-    if (line.styles) { line.styles = null }
-  })
-  cm.doc.frontier = cm.doc.first
-  startWorker(cm, 100)
-  cm.state.modeGen++
-  if (cm.curOp) { regChange(cm) }
-}
-
-// DOCUMENT DATA STRUCTURE
-
-// By default, updates that start and end at the beginning of a line
-// are treated specially, in order to make the association of line
-// widgets and marker elements with the text behave more intuitive.
-function isWholeLineUpdate(doc, change) {
-  return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
-    (!doc.cm || doc.cm.options.wholeLineUpdateBefore)
-}
-
-// Perform a change on the document data structure.
-function updateDoc(doc, change, markedSpans, estimateHeight) {
-  function spansFor(n) {return markedSpans ? markedSpans[n] : null}
-  function update(line, text, spans) {
-    updateLine(line, text, spans, estimateHeight)
-    signalLater(line, "change", line, change)
-  }
-  function linesFor(start, end) {
-    var result = []
-    for (var i = start; i < end; ++i)
-      { result.push(new Line(text[i], spansFor(i), estimateHeight)) }
-    return result
-  }
-
-  var from = change.from, to = change.to, text = change.text
-  var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line)
-  var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line
-
-  // Adjust the line structure
-  if (change.full) {
-    doc.insert(0, linesFor(0, text.length))
-    doc.remove(text.length, doc.size - text.length)
-  } else if (isWholeLineUpdate(doc, change)) {
-    // This is a whole-line replace. Treated specially to make
-    // sure line objects move the way they are supposed to.
-    var added = linesFor(0, text.length - 1)
-    update(lastLine, lastLine.text, lastSpans)
-    if (nlines) { doc.remove(from.line, nlines) }
-    if (added.length) { doc.insert(from.line, added) }
-  } else if (firstLine == lastLine) {
-    if (text.length == 1) {
-      update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans)
-    } else {
-      var added$1 = linesFor(1, text.length - 1)
-      added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight))
-      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0))
-      doc.insert(from.line + 1, added$1)
-    }
-  } else if (text.length == 1) {
-    update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0))
-    doc.remove(from.line + 1, nlines)
-  } else {
-    update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0))
-    update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans)
-    var added$2 = linesFor(1, text.length - 1)
-    if (nlines > 1) { doc.remove(from.line + 1, nlines - 1) }
-    doc.insert(from.line + 1, added$2)
-  }
-
-  signalLater(doc, "change", doc, change)
-}
-
-// Call f for all linked documents.
-function linkedDocs(doc, f, sharedHistOnly) {
-  function propagate(doc, skip, sharedHist) {
-    if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {
-      var rel = doc.linked[i]
-      if (rel.doc == skip) { continue }
-      var shared = sharedHist && rel.sharedHist
-      if (sharedHistOnly && !shared) { continue }
-      f(rel.doc, shared)
-      propagate(rel.doc, doc, shared)
-    } }
-  }
-  propagate(doc, null, true)
-}
-
-// Attach a document to an editor.
-function attachDoc(cm, doc) {
-  if (doc.cm) { throw new Error("This document is already in use.") }
-  cm.doc = doc
-  doc.cm = cm
-  estimateLineHeights(cm)
-  loadMode(cm)
-  if (!cm.options.lineWrapping) { findMaxLine(cm) }
-  cm.options.mode = doc.modeOption
-  regChange(cm)
-}
-
-function History(startGen) {
-  // Arrays of change events and selections. Doing something adds an
-  // event to done and clears undo. Undoing moves events from done
-  // to undone, redoing moves them in the other direction.
-  this.done = []; this.undone = []
-  this.undoDepth = Infinity
-  // Used to track when changes can be merged into a single undo
-  // event
-  this.lastModTime = this.lastSelTime = 0
-  this.lastOp = this.lastSelOp = null
-  this.lastOrigin = this.lastSelOrigin = null
-  // Used by the isClean() method
-  this.generation = this.maxGeneration = startGen || 1
-}
-
-// Create a history change event from an updateDoc-style change
-// object.
-function historyChangeFromChange(doc, change) {
-  var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}
-  attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1)
-  linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true)
-  return histChange
-}
-
-// Pop all selection events off the end of a history array. Stop at
-// a change event.
-function clearSelectionEvents(array) {
-  while (array.length) {
-    var last = lst(array)
-    if (last.ranges) { array.pop() }
-    else { break }
-  }
-}
-
-// Find the top change event in the history. Pop off selection
-// events that are in the way.
-function lastChangeEvent(hist, force) {
-  if (force) {
-    clearSelectionEvents(hist.done)
-    return lst(hist.done)
-  } else if (hist.done.length && !lst(hist.done).ranges) {
-    return lst(hist.done)
-  } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
-    hist.done.pop()
-    return lst(hist.done)
-  }
-}
-
-// Register a change in the history. Merges changes that are within
-// a single operation, or are close together with an origin that
-// allows merging (starting with "+") into a single event.
-function addChangeToHistory(doc, change, selAfter, opId) {
-  var hist = doc.history
-  hist.undone.length = 0
-  var time = +new Date, cur
-  var last
-
-  if ((hist.lastOp == opId ||
-       hist.lastOrigin == change.origin && change.origin &&
-       ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
-        change.origin.charAt(0) == "*")) &&
-      (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
-    // Merge this change into the last event
-    last = lst(cur.changes)
-    if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
-      // Optimized case for simple insertion -- don't want to add
-      // new changesets for every character typed
-      last.to = changeEnd(change)
-    } else {
-      // Add new sub-event
-      cur.changes.push(historyChangeFromChange(doc, change))
-    }
-  } else {
-    // Can not be merged, start a new event.
-    var before = lst(hist.done)
-    if (!before || !before.ranges)
-      { pushSelectionToHistory(doc.sel, hist.done) }
-    cur = {changes: [historyChangeFromChange(doc, change)],
-           generation: hist.generation}
-    hist.done.push(cur)
-    while (hist.done.length > hist.undoDepth) {
-      hist.done.shift()
-      if (!hist.done[0].ranges) { hist.done.shift() }
-    }
-  }
-  hist.done.push(selAfter)
-  hist.generation = ++hist.maxGeneration
-  hist.lastModTime = hist.lastSelTime = time
-  hist.lastOp = hist.lastSelOp = opId
-  hist.lastOrigin = hist.lastSelOrigin = change.origin
-
-  if (!last) { signal(doc, "historyAdded") }
-}
-
-function selectionEventCanBeMerged(doc, origin, prev, sel) {
-  var ch = origin.charAt(0)
-  return ch == "*" ||
-    ch == "+" &&
-    prev.ranges.length == sel.ranges.length &&
-    prev.somethingSelected() == sel.somethingSelected() &&
-    new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)
-}
-
-// Called whenever the selection changes, sets the new selection as
-// the pending selection in the history, and pushes the old pending
-// selection into the 'done' array when it was significantly
-// different (in number of selected ranges, emptiness, or time).
-function addSelectionToHistory(doc, sel, opId, options) {
-  var hist = doc.history, origin = options && options.origin
-
-  // A new event is started when the previous origin does not match
-  // the current, or the origins don't allow matching. Origins
-  // starting with * are always merged, those starting with + are
-  // merged when similar and close together in time.
-  if (opId == hist.lastSelOp ||
-      (origin && hist.lastSelOrigin == origin &&
-       (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
-        selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
-    { hist.done[hist.done.length - 1] = sel }
-  else
-    { pushSelectionToHistory(sel, hist.done) }
-
-  hist.lastSelTime = +new Date
-  hist.lastSelOrigin = origin
-  hist.lastSelOp = opId
-  if (options && options.clearRedo !== false)
-    { clearSelectionEvents(hist.undone) }
-}
-
-function pushSelectionToHistory(sel, dest) {
-  var top = lst(dest)
-  if (!(top && top.ranges && top.equals(sel)))
-    { dest.push(sel) }
-}
-
-// Used to store marked span information in the history.
-function attachLocalSpans(doc, change, from, to) {
-  var existing = change["spans_" + doc.id], n = 0
-  doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {
-    if (line.markedSpans)
-      { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans }
-    ++n
-  })
-}
-
-// When un/re-doing restores text containing marked spans, those
-// that have been explicitly cleared should not be restored.
-function removeClearedSpans(spans) {
-  if (!spans) { return null }
-  var out
-  for (var i = 0; i < spans.length; ++i) {
-    if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i) } }
-    else if (out) { out.push(spans[i]) }
-  }
-  return !out ? spans : out.length ? out : null
-}
-
-// Retrieve and filter the old marked spans stored in a change event.
-function getOldSpans(doc, change) {
-  var found = change["spans_" + doc.id]
-  if (!found) { return null }
-  var nw = []
-  for (var i = 0; i < change.text.length; ++i)
-    { nw.push(removeClearedSpans(found[i])) }
-  return nw
-}
-
-// Used for un/re-doing changes from the history. Combines the
-// result of computing the existing spans with the set of spans that
-// existed in the history (so that deleting around a span and then
-// undoing brings back the span).
-function mergeOldSpans(doc, change) {
-  var old = getOldSpans(doc, change)
-  var stretched = stretchSpansOverChange(doc, change)
-  if (!old) { return stretched }
-  if (!stretched) { return old }
-
-  for (var i = 0; i < old.length; ++i) {
-    var oldCur = old[i], stretchCur = stretched[i]
-    if (oldCur && stretchCur) {
-      spans: for (var j = 0; j < stretchCur.length; ++j) {
-        var span = stretchCur[j]
-        for (var k = 0; k < oldCur.length; ++k)
-          { if (oldCur[k].marker == span.marker) { continue spans } }
-        oldCur.push(span)
-      }
-    } else if (stretchCur) {
-      old[i] = stretchCur
-    }
-  }
-  return old
-}
-
-// Used both to provide a JSON-safe object in .getHistory, and, when
-// detaching a document, to split the history in two
-function copyHistoryArray(events, newGroup, instantiateSel) {
-  var copy = []
-  for (var i = 0; i < events.length; ++i) {
-    var event = events[i]
-    if (event.ranges) {
-      copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event)
-      continue
-    }
-    var changes = event.changes, newChanges = []
-    copy.push({changes: newChanges})
-    for (var j = 0; j < changes.length; ++j) {
-      var change = changes[j], m = (void 0)
-      newChanges.push({from: change.from, to: change.to, text: change.text})
-      if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) {
-        if (indexOf(newGroup, Number(m[1])) > -1) {
-          lst(newChanges)[prop] = change[prop]
-          delete change[prop]
-        }
-      } } }
-    }
-  }
-  return copy
-}
-
-// The 'scroll' parameter given to many of these indicated whether
-// the new cursor position should be scrolled into view after
-// modifying the selection.
-
-// If shift is held or the extend flag is set, extends a range to
-// include a given position (and optionally a second position).
-// Otherwise, simply returns the range between the given positions.
-// Used for cursor motion and such.
-function extendRange(doc, range, head, other) {
-  if (doc.cm && doc.cm.display.shift || doc.extend) {
-    var anchor = range.anchor
-    if (other) {
-      var posBefore = cmp(head, anchor) < 0
-      if (posBefore != (cmp(other, anchor) < 0)) {
-        anchor = head
-        head = other
-      } else if (posBefore != (cmp(head, other) < 0)) {
-        head = other
-      }
-    }
-    return new Range(anchor, head)
-  } else {
-    return new Range(other || head, head)
-  }
-}
-
-// Extend the primary selection range, discard the rest.
-function extendSelection(doc, head, other, options) {
-  setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options)
-}
-
-// Extend all selections (pos is an array of selections with length
-// equal the number of selections)
-function extendSelections(doc, heads, options) {
-  var out = []
-  for (var i = 0; i < doc.sel.ranges.length; i++)
-    { out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null) }
-  var newSel = normalizeSelection(out, doc.sel.primIndex)
-  setSelection(doc, newSel, options)
-}
-
-// Updates a single range in the selection.
-function replaceOneSelection(doc, i, range, options) {
-  var ranges = doc.sel.ranges.slice(0)
-  ranges[i] = range
-  setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options)
-}
-
-// Reset the selection to a single range.
-function setSimpleSelection(doc, anchor, head, options) {
-  setSelection(doc, simpleSelection(anchor, head), options)
-}
-
-// Give beforeSelectionChange handlers a change to influence a
-// selection update.
-function filterSelectionChange(doc, sel, options) {
-  var obj = {
-    ranges: sel.ranges,
-    update: function(ranges) {
-      var this$1 = this;
-
-      this.ranges = []
-      for (var i = 0; i < ranges.length; i++)
-        { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
-                                   clipPos(doc, ranges[i].head)) }
-    },
-    origin: options && options.origin
-  }
-  signal(doc, "beforeSelectionChange", doc, obj)
-  if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj) }
-  if (obj.ranges != sel.ranges) { return normalizeSelection(obj.ranges, obj.ranges.length - 1) }
-  else { return sel }
-}
-
-function setSelectionReplaceHistory(doc, sel, options) {
-  var done = doc.history.done, last = lst(done)
-  if (last && last.ranges) {
-    done[done.length - 1] = sel
-    setSelectionNoUndo(doc, sel, options)
-  } else {
-    setSelection(doc, sel, options)
-  }
-}
-
-// Set a new selection.
-function setSelection(doc, sel, options) {
-  setSelectionNoUndo(doc, sel, options)
-  addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options)
-}
-
-function setSelectionNoUndo(doc, sel, options) {
-  if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
-    { sel = filterSelectionChange(doc, sel, options) }
-
-  var bias = options && options.bias ||
-    (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1)
-  setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true))
-
-  if (!(options && options.scroll === false) && doc.cm)
-    { ensureCursorVisible(doc.cm) }
-}
-
-function setSelectionInner(doc, sel) {
-  if (sel.equals(doc.sel)) { return }
-
-  doc.sel = sel
-
-  if (doc.cm) {
-    doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true
-    signalCursorActivity(doc.cm)
-  }
-  signalLater(doc, "cursorActivity", doc)
-}
-
-// Verify that the selection does not partially select any atomic
-// marked ranges.
-function reCheckSelection(doc) {
-  setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll)
-}
-
-// Return a selection that does not partially select any atomic
-// ranges.
-function skipAtomicInSelection(doc, sel, bias, mayClear) {
-  var out
-  for (var i = 0; i < sel.ranges.length; i++) {
-    var range = sel.ranges[i]
-    var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i]
-    var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear)
-    var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear)
-    if (out || newAnchor != range.anchor || newHead != range.head) {
-      if (!out) { out = sel.ranges.slice(0, i) }
-      out[i] = new Range(newAnchor, newHead)
-    }
-  }
-  return out ? normalizeSelection(out, sel.primIndex) : sel
-}
-
-function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
-  var line = getLine(doc, pos.line)
-  if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
-    var sp = line.markedSpans[i], m = sp.marker
-    if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
-        (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
-      if (mayClear) {
-        signal(m, "beforeCursorEnter")
-        if (m.explicitlyCleared) {
-          if (!line.markedSpans) { break }
-          else {--i; continue}
-        }
-      }
-      if (!m.atomic) { continue }
-
-      if (oldPos) {
-        var near = m.find(dir < 0 ? 1 : -1), diff = (void 0)
-        if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft)
-          { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null) }
-        if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))
-          { return skipAtomicInner(doc, near, pos, dir, mayClear) }
-      }
-
-      var far = m.find(dir < 0 ? -1 : 1)
-      if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight)
-        { far = movePos(doc, far, dir, far.line == pos.line ? line : null) }
-      return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null
-    }
-  } }
-  return pos
-}
-
-// Ensure a given position is not inside an atomic range.
-function skipAtomic(doc, pos, oldPos, bias, mayClear) {
-  var dir = bias || 1
-  var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||
-      (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||
-      skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||
-      (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true))
-  if (!found) {
-    doc.cantEdit = true
-    return Pos(doc.first, 0)
-  }
-  return found
-}
-
-function movePos(doc, pos, dir, line) {
-  if (dir < 0 && pos.ch == 0) {
-    if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }
-    else { return null }
-  } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {
-    if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }
-    else { return null }
-  } else {
-    return new Pos(pos.line, pos.ch + dir)
-  }
-}
-
-function selectAll(cm) {
-  cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll)
-}
-
-// UPDATING
-
-// Allow "beforeChange" event handlers to influence a change
-function filterChange(doc, change, update) {
-  var obj = {
-    canceled: false,
-    from: change.from,
-    to: change.to,
-    text: change.text,
-    origin: change.origin,
-    cancel: function () { return obj.canceled = true; }
-  }
-  if (update) { obj.update = function (from, to, text, origin) {
-    if (from) { obj.from = clipPos(doc, from) }
-    if (to) { obj.to = clipPos(doc, to) }
-    if (text) { obj.text = text }
-    if (origin !== undefined) { obj.origin = origin }
-  } }
-  signal(doc, "beforeChange", doc, obj)
-  if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj) }
-
-  if (obj.canceled) { return null }
-  return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}
-}
-
-// Apply a change to a document, and add it to the document's
-// history, and propagating it to all linked documents.
-function makeChange(doc, change, ignoreReadOnly) {
-  if (doc.cm) {
-    if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }
-    if (doc.cm.state.suppressEdits) { return }
-  }
-
-  if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
-    change = filterChange(doc, change, true)
-    if (!change) { return }
-  }
-
-  // Possibly split or suppress the update based on the presence
-  // of read-only spans in its range.
-  var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to)
-  if (split) {
-    for (var i = split.length - 1; i >= 0; --i)
-      { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text}) }
-  } else {
-    makeChangeInner(doc, change)
-  }
-}
-
-function makeChangeInner(doc, change) {
-  if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return }
-  var selAfter = computeSelAfterChange(doc, change)
-  addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN)
-
-  makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change))
-  var rebased = []
-
-  linkedDocs(doc, function (doc, sharedHist) {
-    if (!sharedHist && indexOf(rebased, doc.history) == -1) {
-      rebaseHist(doc.history, change)
-      rebased.push(doc.history)
-    }
-    makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change))
-  })
-}
-
-// Revert a change stored in a document's history.
-function makeChangeFromHistory(doc, type, allowSelectionOnly) {
-  if (doc.cm && doc.cm.state.suppressEdits && !allowSelectionOnly) { return }
-
-  var hist = doc.history, event, selAfter = doc.sel
-  var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done
-
-  // Verify that there is a useable event (so that ctrl-z won't
-  // needlessly clear selection events)
-  var i = 0
-  for (; i < source.length; i++) {
-    event = source[i]
-    if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
-      { break }
-  }
-  if (i == source.length) { return }
-  hist.lastOrigin = hist.lastSelOrigin = null
-
-  for (;;) {
-    event = source.pop()
-    if (event.ranges) {
-      pushSelectionToHistory(event, dest)
-      if (allowSelectionOnly && !event.equals(doc.sel)) {
-        setSelection(doc, event, {clearRedo: false})
-        return
-      }
-      selAfter = event
-    }
-    else { break }
-  }
-
-  // Build up a reverse change object to add to the opposite history
-  // stack (redo when undoing, and vice versa).
-  var antiChanges = []
-  pushSelectionToHistory(selAfter, dest)
-  dest.push({changes: antiChanges, generation: hist.generation})
-  hist.generation = event.generation || ++hist.maxGeneration
-
-  var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")
-
-  var loop = function ( i ) {
-    var change = event.changes[i]
-    change.origin = type
-    if (filter && !filterChange(doc, change, false)) {
-      source.length = 0
-      return {}
-    }
-
-    antiChanges.push(historyChangeFromChange(doc, change))
-
-    var after = i ? computeSelAfterChange(doc, change) : lst(source)
-    makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change))
-    if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}) }
-    var rebased = []
-
-    // Propagate to the linked documents
-    linkedDocs(doc, function (doc, sharedHist) {
-      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
-        rebaseHist(doc.history, change)
-        rebased.push(doc.history)
-      }
-      makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change))
-    })
-  };
-
-  for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {
-    var returned = loop( i$1 );
-
-    if ( returned ) return returned.v;
-  }
-}
-
-// Sub-views need their line numbers shifted when text is added
-// above or below them in the parent document.
-function shiftDoc(doc, distance) {
-  if (distance == 0) { return }
-  doc.first += distance
-  doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(
-    Pos(range.anchor.line + distance, range.anchor.ch),
-    Pos(range.head.line + distance, range.head.ch)
-  ); }), doc.sel.primIndex)
-  if (doc.cm) {
-    regChange(doc.cm, doc.first, doc.first - distance, distance)
-    for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
-      { regLineChange(doc.cm, l, "gutter") }
-  }
-}
-
-// More lower-level change function, handling only a single document
-// (not linked ones).
-function makeChangeSingleDoc(doc, change, selAfter, spans) {
-  if (doc.cm && !doc.cm.curOp)
-    { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }
-
-  if (change.to.line < doc.first) {
-    shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line))
-    return
-  }
-  if (change.from.line > doc.lastLine()) { return }
-
-  // Clip the change to the size of this doc
-  if (change.from.line < doc.first) {
-    var shift = change.text.length - 1 - (doc.first - change.from.line)
-    shiftDoc(doc, shift)
-    change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
-              text: [lst(change.text)], origin: change.origin}
-  }
-  var last = doc.lastLine()
-  if (change.to.line > last) {
-    change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
-              text: [change.text[0]], origin: change.origin}
-  }
-
-  change.removed = getBetween(doc, change.from, change.to)
-
-  if (!selAfter) { selAfter = computeSelAfterChange(doc, change) }
-  if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans) }
-  else { updateDoc(doc, change, spans) }
-  setSelectionNoUndo(doc, selAfter, sel_dontScroll)
-}
-
-// Handle the interaction of a change to a document with the editor
-// that this document is part of.
-function makeChangeSingleDocInEditor(cm, change, spans) {
-  var doc = cm.doc, display = cm.display, from = change.from, to = change.to
-
-  var recomputeMaxLength = false, checkWidthStart = from.line
-  if (!cm.options.lineWrapping) {
-    checkWidthStart = lineNo(visualLine(getLine(doc, from.line)))
-    doc.iter(checkWidthStart, to.line + 1, function (line) {
-      if (line == display.maxLine) {
-        recomputeMaxLength = true
-        return true
-      }
-    })
-  }
-
-  if (doc.sel.contains(change.from, change.to) > -1)
-    { signalCursorActivity(cm) }
-
-  updateDoc(doc, change, spans, estimateHeight(cm))
-
-  if (!cm.options.lineWrapping) {
-    doc.iter(checkWidthStart, from.line + change.text.length, function (line) {
-      var len = lineLength(line)
-      if (len > display.maxLineLength) {
-        display.maxLine = line
-        display.maxLineLength = len
-        display.maxLineChanged = true
-        recomputeMaxLength = false
-      }
-    })
-    if (recomputeMaxLength) { cm.curOp.updateMaxLine = true }
-  }
-
-  // Adjust frontier, schedule worker
-  doc.frontier = Math.min(doc.frontier, from.line)
-  startWorker(cm, 400)
-
-  var lendiff = change.text.length - (to.line - from.line) - 1
-  // Remember that these lines changed, for updating the display
-  if (change.full)
-    { regChange(cm) }
-  else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
-    { regLineChange(cm, from.line, "text") }
-  else
-    { regChange(cm, from.line, to.line + 1, lendiff) }
-
-  var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change")
-  if (changeHandler || changesHandler) {
-    var obj = {
-      from: from, to: to,
-      text: change.text,
-      removed: change.removed,
-      origin: change.origin
-    }
-    if (changeHandler) { signalLater(cm, "change", cm, obj) }
-    if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj) }
-  }
-  cm.display.selForContextMenu = null
-}
-
-function replaceRange(doc, code, from, to, origin) {
-  if (!to) { to = from }
-  if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp }
-  if (typeof code == "string") { code = doc.splitLines(code) }
-  makeChange(doc, {from: from, to: to, text: code, origin: origin})
-}
-
-// Rebasing/resetting history to deal with externally-sourced changes
-
-function rebaseHistSelSingle(pos, from, to, diff) {
-  if (to < pos.line) {
-    pos.line += diff
-  } else if (from < pos.line) {
-    pos.line = from
-    pos.ch = 0
-  }
-}
-
-// Tries to rebase an array of history events given a change in the
-// document. If the change touches the same lines as the event, the
-// event, and everything 'behind' it, is discarded. If the change is
-// before the event, the event's positions are updated. Uses a
-// copy-on-write scheme for the positions, to avoid having to
-// reallocate them all on every rebase, but also avoid problems with
-// shared position objects being unsafely updated.
-function rebaseHistArray(array, from, to, diff) {
-  for (var i = 0; i < array.length; ++i) {
-    var sub = array[i], ok = true
-    if (sub.ranges) {
-      if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true }
-      for (var j = 0; j < sub.ranges.length; j++) {
-        rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff)
-        rebaseHistSelSingle(sub.ranges[j].head, from, to, diff)
-      }
-      continue
-    }
-    for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {
-      var cur = sub.changes[j$1]
-      if (to < cur.from.line) {
-        cur.from = Pos(cur.from.line + diff, cur.from.ch)
-        cur.to = Pos(cur.to.line + diff, cur.to.ch)
-      } else if (from <= cur.to.line) {
-        ok = false
-        break
-      }
-    }
-    if (!ok) {
-      array.splice(0, i + 1)
-      i = 0
-    }
-  }
-}
-
-function rebaseHist(hist, change) {
-  var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1
-  rebaseHistArray(hist.done, from, to, diff)
-  rebaseHistArray(hist.undone, from, to, diff)
-}
-
-// Utility for applying a change to a line by handle or number,
-// returning the number and optionally registering the line as
-// changed.
-function changeLine(doc, handle, changeType, op) {
-  var no = handle, line = handle
-  if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)) }
-  else { no = lineNo(handle) }
-  if (no == null) { return null }
-  if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType) }
-  return line
-}
-
-// The document is represented as a BTree consisting of leaves, with
-// chunk of lines in them, and branches, with up to ten leaves or
-// other branch nodes below them. The top node is always a branch
-// node, and is the document object itself (meaning it has
-// additional methods and properties).
-//
-// All nodes have parent links. The tree is used both to go from
-// line numbers to line objects, and to go from objects to numbers.
-// It also indexes by height, and is used to convert between height
-// and line object, and to find the total height of the document.
-//
-// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
-
-function LeafChunk(lines) {
-  var this$1 = this;
-
-  this.lines = lines
-  this.parent = null
-  var height = 0
-  for (var i = 0; i < lines.length; ++i) {
-    lines[i].parent = this$1
-    height += lines[i].height
-  }
-  this.height = height
-}
-
-LeafChunk.prototype = {
-  chunkSize: function() { return this.lines.length },
-  // Remove the n lines at offset 'at'.
-  removeInner: function(at, n) {
-    var this$1 = this;
-
-    for (var i = at, e = at + n; i < e; ++i) {
-      var line = this$1.lines[i]
-      this$1.height -= line.height
-      cleanUpLine(line)
-      signalLater(line, "delete")
-    }
-    this.lines.splice(at, n)
-  },
-  // Helper used to collapse a small branch into a single leaf.
-  collapse: function(lines) {
-    lines.push.apply(lines, this.lines)
-  },
-  // Insert the given array of lines at offset 'at', count them as
-  // having the given height.
-  insertInner: function(at, lines, height) {
-    var this$1 = this;
-
-    this.height += height
-    this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at))
-    for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 }
-  },
-  // Used to iterate over a part of the tree.
-  iterN: function(at, n, op) {
-    var this$1 = this;
-
-    for (var e = at + n; at < e; ++at)
-      { if (op(this$1.lines[at])) { return true } }
-  }
-}
-
-function BranchChunk(children) {
-  var this$1 = this;
-
-  this.children = children
-  var size = 0, height = 0
-  for (var i = 0; i < children.length; ++i) {
-    var ch = children[i]
-    size += ch.chunkSize(); height += ch.height
-    ch.parent = this$1
-  }
-  this.size = size
-  this.height = height
-  this.parent = null
-}
-
-BranchChunk.prototype = {
-  chunkSize: function() { return this.size },
-  removeInner: function(at, n) {
-    var this$1 = this;
-
-    this.size -= n
-    for (var i = 0; i < this.children.length; ++i) {
-      var child = this$1.children[i], sz = child.chunkSize()
-      if (at < sz) {
-        var rm = Math.min(n, sz - at), oldHeight = child.height
-        child.removeInner(at, rm)
-        this$1.height -= oldHeight - child.height
-        if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null }
-        if ((n -= rm) == 0) { break }
-        at = 0
-      } else { at -= sz }
-    }
-    // If the result is smaller than 25 lines, ensure that it is a
-    // single leaf node.
-    if (this.size - n < 25 &&
-        (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
-      var lines = []
-      this.collapse(lines)
-      this.children = [new LeafChunk(lines)]
-      this.children[0].parent = this
-    }
-  },
-  collapse: function(lines) {
-    var this$1 = this;
-
-    for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines) }
-  },
-  insertInner: function(at, lines, height) {
-    var this$1 = this;
-
-    this.size += lines.length
-    this.height += height
-    for (var i = 0; i < this.children.length; ++i) {
-      var child = this$1.children[i], sz = child.chunkSize()
-      if (at <= sz) {
-        child.insertInner(at, lines, height)
-        if (child.lines && child.lines.length > 50) {
-          // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.
-          // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.
-          var remaining = child.lines.length % 25 + 25
-          for (var pos = remaining; pos < child.lines.length;) {
-            var leaf = new LeafChunk(child.lines.slice(pos, pos += 25))
-            child.height -= leaf.height
-            this$1.children.splice(++i, 0, leaf)
-            leaf.parent = this$1
-          }
-          child.lines = child.lines.slice(0, remaining)
-          this$1.maybeSpill()
-        }
-        break
-      }
-      at -= sz
-    }
-  },
-  // When a node has grown, check whether it should be split.
-  maybeSpill: function() {
-    if (this.children.length <= 10) { return }
-    var me = this
-    do {
-      var spilled = me.children.splice(me.children.length - 5, 5)
-      var sibling = new BranchChunk(spilled)
-      if (!me.parent) { // Become the parent node
-        var copy = new BranchChunk(me.children)
-        copy.parent = me
-        me.children = [copy, sibling]
-        me = copy
-     } else {
-        me.size -= sibling.size
-        me.height -= sibling.height
-        var myIndex = indexOf(me.parent.children, me)
-        me.parent.children.splice(myIndex + 1, 0, sibling)
-      }
-      sibling.parent = me.parent
-    } while (me.children.length > 10)
-    me.parent.maybeSpill()
-  },
-  iterN: function(at, n, op) {
-    var this$1 = this;
-
-    for (var i = 0; i < this.children.length; ++i) {
-      var child = this$1.children[i], sz = child.chunkSize()
-      if (at < sz) {
-        var used = Math.min(n, sz - at)
-        if (child.iterN(at, used, op)) { return true }
-        if ((n -= used) == 0) { break }
-        at = 0
-      } else { at -= sz }
-    }
-  }
-}
-
-// Line widgets are block elements displayed above or below a line.
-
-function LineWidget(doc, node, options) {
-  var this$1 = this;
-
-  if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))
-    { this$1[opt] = options[opt] } } }
-  this.doc = doc
-  this.node = node
-}
-eventMixin(LineWidget)
-
-function adjustScrollWhenAboveVisible(cm, line, diff) {
-  if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
-    { addToScrollPos(cm, null, diff) }
-}
-
-LineWidget.prototype.clear = function() {
-  var this$1 = this;
-
-  var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line)
-  if (no == null || !ws) { return }
-  for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1) } }
-  if (!ws.length) { line.widgets = null }
-  var height = widgetHeight(this)
-  updateLineHeight(line, Math.max(0, line.height - height))
-  if (cm) { runInOp(cm, function () {
-    adjustScrollWhenAboveVisible(cm, line, -height)
-    regLineChange(cm, no, "widget")
-  }) }
-}
-LineWidget.prototype.changed = function() {
-  var oldH = this.height, cm = this.doc.cm, line = this.line
-  this.height = null
-  var diff = widgetHeight(this) - oldH
-  if (!diff) { return }
-  updateLineHeight(line, line.height + diff)
-  if (cm) { runInOp(cm, function () {
-    cm.curOp.forceUpdate = true
-    adjustScrollWhenAboveVisible(cm, line, diff)
-  }) }
-}
-
-function addLineWidget(doc, handle, node, options) {
-  var widget = new LineWidget(doc, node, options)
-  var cm = doc.cm
-  if (cm && widget.noHScroll) { cm.display.alignWidgets = true }
-  changeLine(doc, handle, "widget", function (line) {
-    var widgets = line.widgets || (line.widgets = [])
-    if (widget.insertAt == null) { widgets.push(widget) }
-    else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget) }
-    widget.line = line
-    if (cm && !lineIsHidden(doc, line)) {
-      var aboveVisible = heightAtLine(line) < doc.scrollTop
-      updateLineHeight(line, line.height + widgetHeight(widget))
-      if (aboveVisible) { addToScrollPos(cm, null, widget.height) }
-      cm.curOp.forceUpdate = true
-    }
-    return true
-  })
-  return widget
-}
-
-// TEXTMARKERS
-
-// Created with markText and setBookmark methods. A TextMarker is a
-// handle that can be used to clear or find a marked position in the
-// document. Line objects hold arrays (markedSpans) containing
-// {from, to, marker} object pointing to such marker objects, and
-// indicating that such a marker is present on that line. Multiple
-// lines may point to the same marker when it spans across lines.
-// The spans will have null for their from/to properties when the
-// marker continues beyond the start/end of the line. Markers have
-// links back to the lines they currently touch.
-
-// Collapsed markers have unique ids, in order to be able to order
-// them, which is needed for uniquely determining an outer marker
-// when they overlap (they may nest, but not partially overlap).
-var nextMarkerId = 0
-
-function TextMarker(doc, type) {
-  this.lines = []
-  this.type = type
-  this.doc = doc
-  this.id = ++nextMarkerId
-}
-eventMixin(TextMarker)
-
-// Clear the marker.
-TextMarker.prototype.clear = function() {
-  var this$1 = this;
-
-  if (this.explicitlyCleared) { return }
-  var cm = this.doc.cm, withOp = cm && !cm.curOp
-  if (withOp) { startOperation(cm) }
-  if (hasHandler(this, "clear")) {
-    var found = this.find()
-    if (found) { signalLater(this, "clear", found.from, found.to) }
-  }
-  var min = null, max = null
-  for (var i = 0; i < this.lines.length; ++i) {
-    var line = this$1.lines[i]
-    var span = getMarkedSpanFor(line.markedSpans, this$1)
-    if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text") }
-    else if (cm) {
-      if (span.to != null) { max = lineNo(line) }
-      if (span.from != null) { min = lineNo(line) }
-    }
-    line.markedSpans = removeMarkedSpan(line.markedSpans, span)
-    if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm)
-      { updateLineHeight(line, textHeight(cm.display)) }
-  }
-  if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
-    var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual)
-    if (len > cm.display.maxLineLength) {
-      cm.display.maxLine = visual
-      cm.display.maxLineLength = len
-      cm.display.maxLineChanged = true
-    }
-  } }
-
-  if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1) }
-  this.lines.length = 0
-  this.explicitlyCleared = true
-  if (this.atomic && this.doc.cantEdit) {
-    this.doc.cantEdit = false
-    if (cm) { reCheckSelection(cm.doc) }
-  }
-  if (cm) { signalLater(cm, "markerCleared", cm, this) }
-  if (withOp) { endOperation(cm) }
-  if (this.parent) { this.parent.clear() }
-}
-
-// Find the position of the marker in the document. Returns a {from,
-// to} object by default. Side can be passed to get a specific side
-// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
-// Pos objects returned contain a line object, rather than a line
-// number (used to prevent looking up the same line twice).
-TextMarker.prototype.find = function(side, lineObj) {
-  var this$1 = this;
-
-  if (side == null && this.type == "bookmark") { side = 1 }
-  var from, to
-  for (var i = 0; i < this.lines.length; ++i) {
-    var line = this$1.lines[i]
-    var span = getMarkedSpanFor(line.markedSpans, this$1)
-    if (span.from != null) {
-      from = Pos(lineObj ? line : lineNo(line), span.from)
-      if (side == -1) { return from }
-    }
-    if (span.to != null) {
-      to = Pos(lineObj ? line : lineNo(line), span.to)
-      if (side == 1) { return to }
-    }
-  }
-  return from && {from: from, to: to}
-}
-
-// Signals that the marker's widget changed, and surrounding layout
-// should be recomputed.
-TextMarker.prototype.changed = function() {
-  var pos = this.find(-1, true), widget = this, cm = this.doc.cm
-  if (!pos || !cm) { return }
-  runInOp(cm, function () {
-    var line = pos.line, lineN = lineNo(pos.line)
-    var view = findViewForLine(cm, lineN)
-    if (view) {
-      clearLineMeasurementCacheFor(view)
-      cm.curOp.selectionChanged = cm.curOp.forceUpdate = true
-    }
-    cm.curOp.updateMaxLine = true
-    if (!lineIsHidden(widget.doc, line) && widget.height != null) {
-      var oldHeight = widget.height
-      widget.height = null
-      var dHeight = widgetHeight(widget) - oldHeight
-      if (dHeight)
-        { updateLineHeight(line, line.height + dHeight) }
-    }
-  })
-}
-
-TextMarker.prototype.attachLine = function(line) {
-  if (!this.lines.length && this.doc.cm) {
-    var op = this.doc.cm.curOp
-    if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
-      { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this) }
-  }
-  this.lines.push(line)
-}
-TextMarker.prototype.detachLine = function(line) {
-  this.lines.splice(indexOf(this.lines, line), 1)
-  if (!this.lines.length && this.doc.cm) {
-    var op = this.doc.cm.curOp
-    ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this)
-  }
-}
-
-// Create a marker, wire it up to the right lines, and
-function markText(doc, from, to, options, type) {
-  // Shared markers (across linked documents) are handled separately
-  // (markTextShared will call out to this again, once per
-  // document).
-  if (options && options.shared) { return markTextShared(doc, from, to, options, type) }
-  // Ensure we are in an operation.
-  if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }
-
-  var marker = new TextMarker(doc, type), diff = cmp(from, to)
-  if (options) { copyObj(options, marker, false) }
-  // Don't connect empty markers unless clearWhenEmpty is false
-  if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
-    { return marker }
-  if (marker.replacedWith) {
-    // Showing up as a widget implies collapsed (widget replaces text)
-    marker.collapsed = true
-    marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget")
-    marker.widgetNode.setAttribute("role", "presentation") // hide from accessibility tree
-    if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true") }
-    if (options.insertLeft) { marker.widgetNode.insertLeft = true }
-  }
-  if (marker.collapsed) {
-    if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
-        from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
-      { throw new Error("Inserting collapsed marker partially overlapping an existing one") }
-    seeCollapsedSpans()
-  }
-
-  if (marker.addToHistory)
-    { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN) }
-
-  var curLine = from.line, cm = doc.cm, updateMaxLine
-  doc.iter(curLine, to.line + 1, function (line) {
-    if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
-      { updateMaxLine = true }
-    if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0) }
-    addMarkedSpan(line, new MarkedSpan(marker,
-                                       curLine == from.line ? from.ch : null,
-                                       curLine == to.line ? to.ch : null))
-    ++curLine
-  })
-  // lineIsHidden depends on the presence of the spans, so needs a second pass
-  if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {
-    if (lineIsHidden(doc, line)) { updateLineHeight(line, 0) }
-  }) }
-
-  if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }) }
-
-  if (marker.readOnly) {
-    seeReadOnlySpans()
-    if (doc.history.done.length || doc.history.undone.length)
-      { doc.clearHistory() }
-  }
-  if (marker.collapsed) {
-    marker.id = ++nextMarkerId
-    marker.atomic = true
-  }
-  if (cm) {
-    // Sync editor state
-    if (updateMaxLine) { cm.curOp.updateMaxLine = true }
-    if (marker.collapsed)
-      { regChange(cm, from.line, to.line + 1) }
-    else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)
-      { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text") } }
-    if (marker.atomic) { reCheckSelection(cm.doc) }
-    signalLater(cm, "markerAdded", cm, marker)
-  }
-  return marker
-}
-
-// SHARED TEXTMARKERS
-
-// A shared marker spans multiple linked documents. It is
-// implemented as a meta-marker-object controlling multiple normal
-// markers.
-function SharedTextMarker(markers, primary) {
-  var this$1 = this;
-
-  this.markers = markers
-  this.primary = primary
-  for (var i = 0; i < markers.length; ++i)
-    { markers[i].parent = this$1 }
-}
-eventMixin(SharedTextMarker)
-
-SharedTextMarker.prototype.clear = function() {
-  var this$1 = this;
-
-  if (this.explicitlyCleared) { return }
-  this.explicitlyCleared = true
-  for (var i = 0; i < this.markers.length; ++i)
-    { this$1.markers[i].clear() }
-  signalLater(this, "clear")
-}
-SharedTextMarker.prototype.find = function(side, lineObj) {
-  return this.primary.find(side, lineObj)
-}
-
-function markTextShared(doc, from, to, options, type) {
-  options = copyObj(options)
-  options.shared = false
-  var markers = [markText(doc, from, to, options, type)], primary = markers[0]
-  var widget = options.widgetNode
-  linkedDocs(doc, function (doc) {
-    if (widget) { options.widgetNode = widget.cloneNode(true) }
-    markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type))
-    for (var i = 0; i < doc.linked.length; ++i)
-      { if (doc.linked[i].isParent) { return } }
-    primary = lst(markers)
-  })
-  return new SharedTextMarker(markers, primary)
-}
-
-function findSharedMarkers(doc) {
-  return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })
-}
-
-function copySharedMarkers(doc, markers) {
-  for (var i = 0; i < markers.length; i++) {
-    var marker = markers[i], pos = marker.find()
-    var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to)
-    if (cmp(mFrom, mTo)) {
-      var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type)
-      marker.markers.push(subMark)
-      subMark.parent = marker
-    }
-  }
-}
-
-function detachSharedMarkers(markers) {
-  var loop = function ( i ) {
-    var marker = markers[i], linked = [marker.primary.doc]
-    linkedDocs(marker.primary.doc, function (d) { return linked.push(d); })
-    for (var j = 0; j < marker.markers.length; j++) {
-      var subMarker = marker.markers[j]
-      if (indexOf(linked, subMarker.doc) == -1) {
-        subMarker.parent = null
-        marker.markers.splice(j--, 1)
-      }
-    }
-  };
-
-  for (var i = 0; i < markers.length; i++) loop( i );
-}
-
-var nextDocId = 0
-var Doc = function(text, mode, firstLine, lineSep) {
-  if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep) }
-  if (firstLine == null) { firstLine = 0 }
-
-  BranchChunk.call(this, [new LeafChunk([new Line("", null)])])
-  this.first = firstLine
-  this.scrollTop = this.scrollLeft = 0
-  this.cantEdit = false
-  this.cleanGeneration = 1
-  this.frontier = firstLine
-  var start = Pos(firstLine, 0)
-  this.sel = simpleSelection(start)
-  this.history = new History(null)
-  this.id = ++nextDocId
-  this.modeOption = mode
-  this.lineSep = lineSep
-  this.extend = false
-
-  if (typeof text == "string") { text = this.splitLines(text) }
-  updateDoc(this, {from: start, to: start, text: text})
-  setSelection(this, simpleSelection(start), sel_dontScroll)
-}
-
-Doc.prototype = createObj(BranchChunk.prototype, {
-  constructor: Doc,
-  // Iterate over the document. Supports two forms -- with only one
-  // argument, it calls that for each line in the document. With
-  // three, it iterates over the range given by the first two (with
-  // the second being non-inclusive).
-  iter: function(from, to, op) {
-    if (op) { this.iterN(from - this.first, to - from, op) }
-    else { this.iterN(this.first, this.first + this.size, from) }
-  },
-
-  // Non-public interface for adding and removing lines.
-  insert: function(at, lines) {
-    var height = 0
-    for (var i = 0; i < lines.length; ++i) { height += lines[i].height }
-    this.insertInner(at - this.first, lines, height)
-  },
-  remove: function(at, n) { this.removeInner(at - this.first, n) },
-
-  // From here, the methods are part of the public interface. Most
-  // are also available from CodeMirror (editor) instances.
-
-  getValue: function(lineSep) {
-    var lines = getLines(this, this.first, this.first + this.size)
-    if (lineSep === false) { return lines }
-    return lines.join(lineSep || this.lineSeparator())
-  },
-  setValue: docMethodOp(function(code) {
-    var top = Pos(this.first, 0), last = this.first + this.size - 1
-    makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
-                      text: this.splitLines(code), origin: "setValue", full: true}, true)
-    setSelection(this, simpleSelection(top))
-  }),
-  replaceRange: function(code, from, to, origin) {
-    from = clipPos(this, from)
-    to = to ? clipPos(this, to) : from
-    replaceRange(this, code, from, to, origin)
-  },
-  getRange: function(from, to, lineSep) {
-    var lines = getBetween(this, clipPos(this, from), clipPos(this, to))
-    if (lineSep === false) { return lines }
-    return lines.join(lineSep || this.lineSeparator())
-  },
-
-  getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},
-
-  getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},
-  getLineNumber: function(line) {return lineNo(line)},
-
-  getLineHandleVisualStart: function(line) {
-    if (typeof line == "number") { line = getLine(this, line) }
-    return visualLine(line)
-  },
-
-  lineCount: function() {return this.size},
-  firstLine: function() {return this.first},
-  lastLine: function() {return this.first + this.size - 1},
-
-  clipPos: function(pos) {return clipPos(this, pos)},
-
-  getCursor: function(start) {
-    var range = this.sel.primary(), pos
-    if (start == null || start == "head") { pos = range.head }
-    else if (start == "anchor") { pos = range.anchor }
-    else if (start == "end" || start == "to" || start === false) { pos = range.to() }
-    else { pos = range.from() }
-    return pos
-  },
-  listSelections: function() { return this.sel.ranges },
-  somethingSelected: function() {return this.sel.somethingSelected()},
-
-  setCursor: docMethodOp(function(line, ch, options) {
-    setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options)
-  }),
-  setSelection: docMethodOp(function(anchor, head, options) {
-    setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options)
-  }),
-  extendSelection: docMethodOp(function(head, other, options) {
-    extendSelection(this, clipPos(this, head), other && clipPos(this, other), options)
-  }),
-  extendSelections: docMethodOp(function(heads, options) {
-    extendSelections(this, clipPosArray(this, heads), options)
-  }),
-  extendSelectionsBy: docMethodOp(function(f, options) {
-    var heads = map(this.sel.ranges, f)
-    extendSelections(this, clipPosArray(this, heads), options)
-  }),
-  setSelections: docMethodOp(function(ranges, primary, options) {
-    var this$1 = this;
-
-    if (!ranges.length) { return }
-    var out = []
-    for (var i = 0; i < ranges.length; i++)
-      { out[i] = new Range(clipPos(this$1, ranges[i].anchor),
-                         clipPos(this$1, ranges[i].head)) }
-    if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex) }
-    setSelection(this, normalizeSelection(out, primary), options)
-  }),
-  addSelection: docMethodOp(function(anchor, head, options) {
-    var ranges = this.sel.ranges.slice(0)
-    ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)))
-    setSelection(this, normalizeSelection(ranges, ranges.length - 1), options)
-  }),
-
-  getSelection: function(lineSep) {
-    var this$1 = this;
-
-    var ranges = this.sel.ranges, lines
-    for (var i = 0; i < ranges.length; i++) {
-      var sel = getBetween(this$1, ranges[i].from(), ranges[i].to())
-      lines = lines ? lines.concat(sel) : sel
-    }
-    if (lineSep === false) { return lines }
-    else { return lines.join(lineSep || this.lineSeparator()) }
-  },
-  getSelections: function(lineSep) {
-    var this$1 = this;
-
-    var parts = [], ranges = this.sel.ranges
-    for (var i = 0; i < ranges.length; i++) {
-      var sel = getBetween(this$1, ranges[i].from(), ranges[i].to())
-      if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()) }
-      parts[i] = sel
-    }
-    return parts
-  },
-  replaceSelection: function(code, collapse, origin) {
-    var dup = []
-    for (var i = 0; i < this.sel.ranges.length; i++)
-      { dup[i] = code }
-    this.replaceSelections(dup, collapse, origin || "+input")
-  },
-  replaceSelections: docMethodOp(function(code, collapse, origin) {
-    var this$1 = this;
-
-    var changes = [], sel = this.sel
-    for (var i = 0; i < sel.ranges.length; i++) {
-      var range = sel.ranges[i]
-      changes[i] = {from: range.from(), to: range.to(), text: this$1.splitLines(code[i]), origin: origin}
-    }
-    var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse)
-    for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)
-      { makeChange(this$1, changes[i$1]) }
-    if (newSel) { setSelectionReplaceHistory(this, newSel) }
-    else if (this.cm) { ensureCursorVisible(this.cm) }
-  }),
-  undo: docMethodOp(function() {makeChangeFromHistory(this, "undo")}),
-  redo: docMethodOp(function() {makeChangeFromHistory(this, "redo")}),
-  undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true)}),
-  redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true)}),
-
-  setExtending: function(val) {this.extend = val},
-  getExtending: function() {return this.extend},
-
-  historySize: function() {
-    var hist = this.history, done = 0, undone = 0
-    for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done } }
-    for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone } }
-    return {undo: done, redo: undone}
-  },
-  clearHistory: function() {this.history = new History(this.history.maxGeneration)},
-
-  markClean: function() {
-    this.cleanGeneration = this.changeGeneration(true)
-  },
-  changeGeneration: function(forceSplit) {
-    if (forceSplit)
-      { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null }
-    return this.history.generation
-  },
-  isClean: function (gen) {
-    return this.history.generation == (gen || this.cleanGeneration)
-  },
-
-  getHistory: function() {
-    return {done: copyHistoryArray(this.history.done),
-            undone: copyHistoryArray(this.history.undone)}
-  },
-  setHistory: function(histData) {
-    var hist = this.history = new History(this.history.maxGeneration)
-    hist.done = copyHistoryArray(histData.done.slice(0), null, true)
-    hist.undone = copyHistoryArray(histData.undone.slice(0), null, true)
-  },
-
-  setGutterMarker: docMethodOp(function(line, gutterID, value) {
-    return changeLine(this, line, "gutter", function (line) {
-      var markers = line.gutterMarkers || (line.gutterMarkers = {})
-      markers[gutterID] = value
-      if (!value && isEmpty(markers)) { line.gutterMarkers = null }
-      return true
-    })
-  }),
-
-  clearGutter: docMethodOp(function(gutterID) {
-    var this$1 = this;
-
-    this.iter(function (line) {
-      if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
-        changeLine(this$1, line, "gutter", function () {
-          line.gutterMarkers[gutterID] = null
-          if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null }
-          return true
-        })
-      }
-    })
-  }),
-
-  lineInfo: function(line) {
-    var n
-    if (typeof line == "number") {
-      if (!isLine(this, line)) { return null }
-      n = line
-      line = getLine(this, line)
-      if (!line) { return null }
-    } else {
-      n = lineNo(line)
-      if (n == null) { return null }
-    }
-    return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
-            textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
-            widgets: line.widgets}
-  },
-
-  addLineClass: docMethodOp(function(handle, where, cls) {
-    return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
-      var prop = where == "text" ? "textClass"
-               : where == "background" ? "bgClass"
-               : where == "gutter" ? "gutterClass" : "wrapClass"
-      if (!line[prop]) { line[prop] = cls }
-      else if (classTest(cls).test(line[prop])) { return false }
-      else { line[prop] += " " + cls }
-      return true
-    })
-  }),
-  removeLineClass: docMethodOp(function(handle, where, cls) {
-    return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
-      var prop = where == "text" ? "textClass"
-               : where == "background" ? "bgClass"
-               : where == "gutter" ? "gutterClass" : "wrapClass"
-      var cur = line[prop]
-      if (!cur) { return false }
-      else if (cls == null) { line[prop] = null }
-      else {
-        var found = cur.match(classTest(cls))
-        if (!found) { return false }
-        var end = found.index + found[0].length
-        line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null
-      }
-      return true
-    })
-  }),
-
-  addLineWidget: docMethodOp(function(handle, node, options) {
-    return addLineWidget(this, handle, node, options)
-  }),
-  removeLineWidget: function(widget) { widget.clear() },
-
-  markText: function(from, to, options) {
-    return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
-  },
-  setBookmark: function(pos, options) {
-    var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
-                    insertLeft: options && options.insertLeft,
-                    clearWhenEmpty: false, shared: options && options.shared,
-                    handleMouseEvents: options && options.handleMouseEvents}
-    pos = clipPos(this, pos)
-    return markText(this, pos, pos, realOpts, "bookmark")
-  },
-  findMarksAt: function(pos) {
-    pos = clipPos(this, pos)
-    var markers = [], spans = getLine(this, pos.line).markedSpans
-    if (spans) { for (var i = 0; i < spans.length; ++i) {
-      var span = spans[i]
-      if ((span.from == null || span.from <= pos.ch) &&
-          (span.to == null || span.to >= pos.ch))
-        { markers.push(span.marker.parent || span.marker) }
-    } }
-    return markers
-  },
-  findMarks: function(from, to, filter) {
-    from = clipPos(this, from); to = clipPos(this, to)
-    var found = [], lineNo = from.line
-    this.iter(from.line, to.line + 1, function (line) {
-      var spans = line.markedSpans
-      if (spans) { for (var i = 0; i < spans.length; i++) {
-        var span = spans[i]
-        if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||
-              span.from == null && lineNo != from.line ||
-              span.from != null && lineNo == to.line && span.from >= to.ch) &&
-            (!filter || filter(span.marker)))
-          { found.push(span.marker.parent || span.marker) }
-      } }
-      ++lineNo
-    })
-    return found
-  },
-  getAllMarks: function() {
-    var markers = []
-    this.iter(function (line) {
-      var sps = line.markedSpans
-      if (sps) { for (var i = 0; i < sps.length; ++i)
-        { if (sps[i].from != null) { markers.push(sps[i].marker) } } }
-    })
-    return markers
-  },
-
-  posFromIndex: function(off) {
-    var ch, lineNo = this.first, sepSize = this.lineSeparator().length
-    this.iter(function (line) {
-      var sz = line.text.length + sepSize
-      if (sz > off) { ch = off; return true }
-      off -= sz
-      ++lineNo
-    })
-    return clipPos(this, Pos(lineNo, ch))
-  },
-  indexFromPos: function (coords) {
-    coords = clipPos(this, coords)
-    var index = coords.ch
-    if (coords.line < this.first || coords.ch < 0) { return 0 }
-    var sepSize = this.lineSeparator().length
-    this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value
-      index += line.text.length + sepSize
-    })
-    return index
-  },
-
-  copy: function(copyHistory) {
-    var doc = new Doc(getLines(this, this.first, this.first + this.size),
-                      this.modeOption, this.first, this.lineSep)
-    doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft
-    doc.sel = this.sel
-    doc.extend = false
-    if (copyHistory) {
-      doc.history.undoDepth = this.history.undoDepth
-      doc.setHistory(this.getHistory())
-    }
-    return doc
-  },
-
-  linkedDoc: function(options) {
-    if (!options) { options = {} }
-    var from = this.first, to = this.first + this.size
-    if (options.from != null && options.from > from) { from = options.from }
-    if (options.to != null && options.to < to) { to = options.to }
-    var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep)
-    if (options.sharedHist) { copy.history = this.history
-    ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist})
-    copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]
-    copySharedMarkers(copy, findSharedMarkers(this))
-    return copy
-  },
-  unlinkDoc: function(other) {
-    var this$1 = this;
-
-    if (other instanceof CodeMirror) { other = other.doc }
-    if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {
-      var link = this$1.linked[i]
-      if (link.doc != other) { continue }
-      this$1.linked.splice(i, 1)
-      other.unlinkDoc(this$1)
-      detachSharedMarkers(findSharedMarkers(this$1))
-      break
-    } }
-    // If the histories were shared, split them again
-    if (other.history == this.history) {
-      var splitIds = [other.id]
-      linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true)
-      other.history = new History(null)
-      other.history.done = copyHistoryArray(this.history.done, splitIds)
-      other.history.undone = copyHistoryArray(this.history.undone, splitIds)
-    }
-  },
-  iterLinkedDocs: function(f) {linkedDocs(this, f)},
-
-  getMode: function() {return this.mode},
-  getEditor: function() {return this.cm},
-
-  splitLines: function(str) {
-    if (this.lineSep) { return str.split(this.lineSep) }
-    return splitLinesAuto(str)
-  },
-  lineSeparator: function() { return this.lineSep || "\n" }
-})
-
-// Public alias.
-Doc.prototype.eachLine = Doc.prototype.iter
-
-// Kludge to work around strange IE behavior where it'll sometimes
-// re-fire a series of drag-related events right after the drop (#1551)
-var lastDrop = 0
-
-function onDrop(e) {
-  var cm = this
-  clearDragCursor(cm)
-  if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
-    { return }
-  e_preventDefault(e)
-  if (ie) { lastDrop = +new Date }
-  var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files
-  if (!pos || cm.isReadOnly()) { return }
-  // Might be a file drop, in which case we simply extract the text
-  // and insert it.
-  if (files && files.length && window.FileReader && window.File) {
-    var n = files.length, text = Array(n), read = 0
-    var loadFile = function (file, i) {
-      if (cm.options.allowDropFileTypes &&
-          indexOf(cm.options.allowDropFileTypes, file.type) == -1)
-        { return }
-
-      var reader = new FileReader
-      reader.onload = operation(cm, function () {
-        var content = reader.result
-        if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = "" }
-        text[i] = content
-        if (++read == n) {
-          pos = clipPos(cm.doc, pos)
-          var change = {from: pos, to: pos,
-                        text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
-                        origin: "paste"}
-          makeChange(cm.doc, change)
-          setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)))
-        }
-      })
-      reader.readAsText(file)
-    }
-    for (var i = 0; i < n; ++i) { loadFile(files[i], i) }
-  } else { // Normal drop
-    // Don't do a replace if the drop happened inside of the selected text.
-    if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
-      cm.state.draggingText(e)
-      // Ensure the editor is re-focused
-      setTimeout(function () { return cm.display.input.focus(); }, 20)
-      return
-    }
-    try {
-      var text$1 = e.dataTransfer.getData("Text")
-      if (text$1) {
-        var selected
-        if (cm.state.draggingText && !cm.state.draggingText.copy)
-          { selected = cm.listSelections() }
-        setSelectionNoUndo(cm.doc, simpleSelection(pos, pos))
-        if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)
-          { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag") } }
-        cm.replaceSelection(text$1, "around", "paste")
-        cm.display.input.focus()
-      }
-    }
-    catch(e){}
-  }
-}
-
-function onDragStart(cm, e) {
-  if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }
-  if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }
-
-  e.dataTransfer.setData("Text", cm.getSelection())
-  e.dataTransfer.effectAllowed = "copyMove"
-
-  // Use dummy image instead of default browsers image.
-  // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
-  if (e.dataTransfer.setDragImage && !safari) {
-    var img = elt("img", null, null, "position: fixed; left: 0; top: 0;")
-    img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
-    if (presto) {
-      img.width = img.height = 1
-      cm.display.wrapper.appendChild(img)
-      // Force a relayout, or Opera won't use our image for some obscure reason
-      img._top = img.offsetTop
-    }
-    e.dataTransfer.setDragImage(img, 0, 0)
-    if (presto) { img.parentNode.removeChild(img) }
-  }
-}
-
-function onDragOver(cm, e) {
-  var pos = posFromMouse(cm, e)
-  if (!pos) { return }
-  var frag = document.createDocumentFragment()
-  drawSelectionCursor(cm, pos, frag)
-  if (!cm.display.dragCursor) {
-    cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors")
-    cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv)
-  }
-  removeChildrenAndAdd(cm.display.dragCursor, frag)
-}
-
-function clearDragCursor(cm) {
-  if (cm.display.dragCursor) {
-    cm.display.lineSpace.removeChild(cm.display.dragCursor)
-    cm.display.dragCursor = null
-  }
-}
-
-// These must be handled carefully, because naively registering a
-// handler for each editor will cause the editors to never be
-// garbage collected.
-
-function forEachCodeMirror(f) {
-  if (!document.body.getElementsByClassName) { return }
-  var byClass = document.body.getElementsByClassName("CodeMirror")
-  for (var i = 0; i < byClass.length; i++) {
-    var cm = byClass[i].CodeMirror
-    if (cm) { f(cm) }
-  }
-}
-
-var globalsRegistered = false
-function ensureGlobalHandlers() {
-  if (globalsRegistered) { return }
-  registerGlobalHandlers()
-  globalsRegistered = true
-}
-function registerGlobalHandlers() {
-  // When the window resizes, we need to refresh active editors.
-  var resizeTimer
-  on(window, "resize", function () {
-    if (resizeTimer == null) { resizeTimer = setTimeout(function () {
-      resizeTimer = null
-      forEachCodeMirror(onResize)
-    }, 100) }
-  })
-  // When the window loses focus, we want to show the editor as blurred
-  on(window, "blur", function () { return forEachCodeMirror(onBlur); })
-}
-// Called when the window resizes
-function onResize(cm) {
-  var d = cm.display
-  if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
-    { return }
-  // Might be a text scaling operation, clear size caches.
-  d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null
-  d.scrollbarsClipped = false
-  cm.setSize()
-}
-
-var keyNames = {
-  3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
-  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
-  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
-  46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
-  106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete",
-  173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
-  221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
-  63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
-}
-
-// Number keys
-for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i) }
-// Alphabetic keys
-for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1) }
-// Function keys
-for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2 }
-
-var keyMap = {}
-
-keyMap.basic = {
-  "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
-  "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
-  "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
-  "Tab": "defaultTab", "Shift-Tab": "indentAuto",
-  "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
-  "Esc": "singleSelection"
-}
-// Note that the save and find-related commands aren't defined by
-// default. User code or addons can define them. Unknown commands
-// are simply ignored.
-keyMap.pcDefault = {
-  "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
-  "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
-  "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
-  "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
-  "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
-  "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
-  "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
-  fallthrough: "basic"
-}
-// Very basic readline/emacs-style bindings, which are standard on Mac.
-keyMap.emacsy = {
-  "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
-  "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
-  "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
-  "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars",
-  "Ctrl-O": "openLine"
-}
-keyMap.macDefault = {
-  "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
-  "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
-  "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
-  "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
-  "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
-  "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
-  "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
-  fallthrough: ["basic", "emacsy"]
-}
-keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault
-
-// KEYMAP DISPATCH
-
-function normalizeKeyName(name) {
-  var parts = name.split(/-(?!$)/)
-  name = parts[parts.length - 1]
-  var alt, ctrl, shift, cmd
-  for (var i = 0; i < parts.length - 1; i++) {
-    var mod = parts[i]
-    if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true }
-    else if (/^a(lt)?$/i.test(mod)) { alt = true }
-    else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true }
-    else if (/^s(hift)?$/i.test(mod)) { shift = true }
-    else { throw new Error("Unrecognized modifier name: " + mod) }
-  }
-  if (alt) { name = "Alt-" + name }
-  if (ctrl) { name = "Ctrl-" + name }
-  if (cmd) { name = "Cmd-" + name }
-  if (shift) { name = "Shift-" + name }
-  return name
-}
-
-// This is a kludge to keep keymaps mostly working as raw objects
-// (backwards compatibility) while at the same time support features
-// like normalization and multi-stroke key bindings. It compiles a
-// new normalized keymap, and then updates the old object to reflect
-// this.
-function normalizeKeyMap(keymap) {
-  var copy = {}
-  for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {
-    var value = keymap[keyname]
-    if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }
-    if (value == "...") { delete keymap[keyname]; continue }
-
-    var keys = map(keyname.split(" "), normalizeKeyName)
-    for (var i = 0; i < keys.length; i++) {
-      var val = (void 0), name = (void 0)
-      if (i == keys.length - 1) {
-        name = keys.join(" ")
-        val = value
-      } else {
-        name = keys.slice(0, i + 1).join(" ")
-        val = "..."
-      }
-      var prev = copy[name]
-      if (!prev) { copy[name] = val }
-      else if (prev != val) { throw new Error("Inconsistent bindings for " + name) }
-    }
-    delete keymap[keyname]
-  } }
-  for (var prop in copy) { keymap[prop] = copy[prop] }
-  return keymap
-}
-
-function lookupKey(key, map, handle, context) {
-  map = getKeyMap(map)
-  var found = map.call ? map.call(key, context) : map[key]
-  if (found === false) { return "nothing" }
-  if (found === "...") { return "multi" }
-  if (found != null && handle(found)) { return "handled" }
-
-  if (map.fallthrough) {
-    if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
-      { return lookupKey(key, map.fallthrough, handle, context) }
-    for (var i = 0; i < map.fallthrough.length; i++) {
-      var result = lookupKey(key, map.fallthrough[i], handle, context)
-      if (result) { return result }
-    }
-  }
-}
-
-// Modifier key presses don't count as 'real' key presses for the
-// purpose of keymap fallthrough.
-function isModifierKey(value) {
-  var name = typeof value == "string" ? value : keyNames[value.keyCode]
-  return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
-}
-
-// Look up the name of a key as indicated by an event object.
-function keyName(event, noShift) {
-  if (presto && event.keyCode == 34 && event["char"]) { return false }
-  var base = keyNames[event.keyCode], name = base
-  if (name == null || event.altGraphKey) { return false }
-  if (event.altKey && base != "Alt") { name = "Alt-" + name }
-  if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name }
-  if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name }
-  if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name }
-  return name
-}
-
-function getKeyMap(val) {
-  return typeof val == "string" ? keyMap[val] : val
-}
-
-// Helper for deleting text near the selection(s), used to implement
-// backspace, delete, and similar functionality.
-function deleteNearSelection(cm, compute) {
-  var ranges = cm.doc.sel.ranges, kill = []
-  // Build up a set of ranges to kill first, merging overlapping
-  // ranges.
-  for (var i = 0; i < ranges.length; i++) {
-    var toKill = compute(ranges[i])
-    while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
-      var replaced = kill.pop()
-      if (cmp(replaced.from, toKill.from) < 0) {
-        toKill.from = replaced.from
-        break
-      }
-    }
-    kill.push(toKill)
-  }
-  // Next, remove those actual ranges.
-  runInOp(cm, function () {
-    for (var i = kill.length - 1; i >= 0; i--)
-      { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete") }
-    ensureCursorVisible(cm)
-  })
-}
-
-// Commands are parameter-less actions that can be performed on an
-// editor, mostly used for keybindings.
-var commands = {
-  selectAll: selectAll,
-  singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); },
-  killLine: function (cm) { return deleteNearSelection(cm, function (range) {
-    if (range.empty()) {
-      var len = getLine(cm.doc, range.head.line).text.length
-      if (range.head.ch == len && range.head.line < cm.lastLine())
-        { return {from: range.head, to: Pos(range.head.line + 1, 0)} }
-      else
-        { return {from: range.head, to: Pos(range.head.line, len)} }
-    } else {
-      return {from: range.from(), to: range.to()}
-    }
-  }); },
-  deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({
-    from: Pos(range.from().line, 0),
-    to: clipPos(cm.doc, Pos(range.to().line + 1, 0))
-  }); }); },
-  delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({
-    from: Pos(range.from().line, 0), to: range.from()
-  }); }); },
-  delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {
-    var top = cm.charCoords(range.head, "div").top + 5
-    var leftPos = cm.coordsChar({left: 0, top: top}, "div")
-    return {from: leftPos, to: range.from()}
-  }); },
-  delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {
-    var top = cm.charCoords(range.head, "div").top + 5
-    var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
-    return {from: range.from(), to: rightPos }
-  }); },
-  undo: function (cm) { return cm.undo(); },
-  redo: function (cm) { return cm.redo(); },
-  undoSelection: function (cm) { return cm.undoSelection(); },
-  redoSelection: function (cm) { return cm.redoSelection(); },
-  goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },
-  goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },
-  goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },
-    {origin: "+move", bias: 1}
-  ); },
-  goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },
-    {origin: "+move", bias: 1}
-  ); },
-  goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },
-    {origin: "+move", bias: -1}
-  ); },
-  goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {
-    var top = cm.charCoords(range.head, "div").top + 5
-    return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
-  }, sel_move); },
-  goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {
-    var top = cm.charCoords(range.head, "div").top + 5
-    return cm.coordsChar({left: 0, top: top}, "div")
-  }, sel_move); },
-  goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {
-    var top = cm.charCoords(range.head, "div").top + 5
-    var pos = cm.coordsChar({left: 0, top: top}, "div")
-    if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) }
-    return pos
-  }, sel_move); },
-  goLineUp: function (cm) { return cm.moveV(-1, "line"); },
-  goLineDown: function (cm) { return cm.moveV(1, "line"); },
-  goPageUp: function (cm) { return cm.moveV(-1, "page"); },
-  goPageDown: function (cm) { return cm.moveV(1, "page"); },
-  goCharLeft: function (cm) { return cm.moveH(-1, "char"); },
-  goCharRight: function (cm) { return cm.moveH(1, "char"); },
-  goColumnLeft: function (cm) { return cm.moveH(-1, "column"); },
-  goColumnRight: function (cm) { return cm.moveH(1, "column"); },
-  goWordLeft: function (cm) { return cm.moveH(-1, "word"); },
-  goGroupRight: function (cm) { return cm.moveH(1, "group"); },
-  goGroupLeft: function (cm) { return cm.moveH(-1, "group"); },
-  goWordRight: function (cm) { return cm.moveH(1, "word"); },
-  delCharBefore: function (cm) { return cm.deleteH(-1, "char"); },
-  delCharAfter: function (cm) { return cm.deleteH(1, "char"); },
-  delWordBefore: function (cm) { return cm.deleteH(-1, "word"); },
-  delWordAfter: function (cm) { return cm.deleteH(1, "word"); },
-  delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); },
-  delGroupAfter: function (cm) { return cm.deleteH(1, "group"); },
-  indentAuto: function (cm) { return cm.indentSelection("smart"); },
-  indentMore: function (cm) { return cm.indentSelection("add"); },
-  indentLess: function (cm) { return cm.indentSelection("subtract"); },
-  insertTab: function (cm) { return cm.replaceSelection("\t"); },
-  insertSoftTab: function (cm) {
-    var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize
-    for (var i = 0; i < ranges.length; i++) {
-      var pos = ranges[i].from()
-      var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize)
-      spaces.push(spaceStr(tabSize - col % tabSize))
-    }
-    cm.replaceSelections(spaces)
-  },
-  defaultTab: function (cm) {
-    if (cm.somethingSelected()) { cm.indentSelection("add") }
-    else { cm.execCommand("insertTab") }
-  },
-  // Swap the two chars left and right of each selection's head.
-  // Move cursor behind the two swapped characters afterwards.
-  //
-  // Doesn't consider line feeds a character.
-  // Doesn't scan more than one line above to find a character.
-  // Doesn't do anything on an empty line.
-  // Doesn't do anything with non-empty selections.
-  transposeChars: function (cm) { return runInOp(cm, function () {
-    var ranges = cm.listSelections(), newSel = []
-    for (var i = 0; i < ranges.length; i++) {
-      if (!ranges[i].empty()) { continue }
-      var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text
-      if (line) {
-        if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1) }
-        if (cur.ch > 0) {
-          cur = new Pos(cur.line, cur.ch + 1)
-          cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
-                          Pos(cur.line, cur.ch - 2), cur, "+transpose")
-        } else if (cur.line > cm.doc.first) {
-          var prev = getLine(cm.doc, cur.line - 1).text
-          if (prev) {
-            cur = new Pos(cur.line, 1)
-            cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
-                            prev.charAt(prev.length - 1),
-                            Pos(cur.line - 1, prev.length - 1), cur, "+transpose")
-          }
-        }
-      }
-      newSel.push(new Range(cur, cur))
-    }
-    cm.setSelections(newSel)
-  }); },
-  newlineAndIndent: function (cm) { return runInOp(cm, function () {
-    var sels = cm.listSelections()
-    for (var i = sels.length - 1; i >= 0; i--)
-      { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input") }
-    sels = cm.listSelections()
-    for (var i$1 = 0; i$1 < sels.length; i$1++)
-      { cm.indentLine(sels[i$1].from().line, null, true) }
-    ensureCursorVisible(cm)
-  }); },
-  openLine: function (cm) { return cm.replaceSelection("\n", "start"); },
-  toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }
-}
-
-
-function lineStart(cm, lineN) {
-  var line = getLine(cm.doc, lineN)
-  var visual = visualLine(line)
-  if (visual != line) { lineN = lineNo(visual) }
-  var order = getOrder(visual)
-  var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual)
-  return Pos(lineN, ch)
-}
-function lineEnd(cm, lineN) {
-  var merged, line = getLine(cm.doc, lineN)
-  while (merged = collapsedSpanAtEnd(line)) {
-    line = merged.find(1, true).line
-    lineN = null
-  }
-  var order = getOrder(line)
-  var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line)
-  return Pos(lineN == null ? lineNo(line) : lineN, ch)
-}
-function lineStartSmart(cm, pos) {
-  var start = lineStart(cm, pos.line)
-  var line = getLine(cm.doc, start.line)
-  var order = getOrder(line)
-  if (!order || order[0].level == 0) {
-    var firstNonWS = Math.max(0, line.text.search(/\S/))
-    var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch
-    return Pos(start.line, inWS ? 0 : firstNonWS)
-  }
-  return start
-}
-
-// Run a handler that was bound to a key.
-function doHandleBinding(cm, bound, dropShift) {
-  if (typeof bound == "string") {
-    bound = commands[bound]
-    if (!bound) { return false }
-  }
-  // Ensure previous input has been read, so that the handler sees a
-  // consistent view of the document
-  cm.display.input.ensurePolled()
-  var prevShift = cm.display.shift, done = false
-  try {
-    if (cm.isReadOnly()) { cm.state.suppressEdits = true }
-    if (dropShift) { cm.display.shift = false }
-    done = bound(cm) != Pass
-  } finally {
-    cm.display.shift = prevShift
-    cm.state.suppressEdits = false
-  }
-  return done
-}
-
-function lookupKeyForEditor(cm, name, handle) {
-  for (var i = 0; i < cm.state.keyMaps.length; i++) {
-    var result = lookupKey(name, cm.state.keyMaps[i], handle, cm)
-    if (result) { return result }
-  }
-  return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
-    || lookupKey(name, cm.options.keyMap, handle, cm)
-}
-
-var stopSeq = new Delayed
-function dispatchKey(cm, name, e, handle) {
-  var seq = cm.state.keySeq
-  if (seq) {
-    if (isModifierKey(name)) { return "handled" }
-    stopSeq.set(50, function () {
-      if (cm.state.keySeq == seq) {
-        cm.state.keySeq = null
-        cm.display.input.reset()
-      }
-    })
-    name = seq + " " + name
-  }
-  var result = lookupKeyForEditor(cm, name, handle)
-
-  if (result == "multi")
-    { cm.state.keySeq = name }
-  if (result == "handled")
-    { signalLater(cm, "keyHandled", cm, name, e) }
-
-  if (result == "handled" || result == "multi") {
-    e_preventDefault(e)
-    restartBlink(cm)
-  }
-
-  if (seq && !result && /\'$/.test(name)) {
-    e_preventDefault(e)
-    return true
-  }
-  return !!result
-}
-
-// Handle a key from the keydown event.
-function handleKeyBinding(cm, e) {
-  var name = keyName(e, true)
-  if (!name) { return false }
-
-  if (e.shiftKey && !cm.state.keySeq) {
-    // First try to resolve full name (including 'Shift-'). Failing
-    // that, see if there is a cursor-motion command (starting with
-    // 'go') bound to the keyname without 'Shift-'.
-    return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); })
-        || dispatchKey(cm, name, e, function (b) {
-             if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
-               { return doHandleBinding(cm, b) }
-           })
-  } else {
-    return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })
-  }
-}
-
-// Handle a key from the keypress event
-function handleCharBinding(cm, e, ch) {
-  return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); })
-}
-
-var lastStoppedKey = null
-function onKeyDown(e) {
-  var cm = this
-  cm.curOp.focus = activeElt()
-  if (signalDOMEvent(cm, e)) { return }
-  // IE does strange things with escape.
-  if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false }
-  var code = e.keyCode
-  cm.display.shift = code == 16 || e.shiftKey
-  var handled = handleKeyBinding(cm, e)
-  if (presto) {
-    lastStoppedKey = handled ? code : null
-    // Opera has no cut event... we try to at least catch the key combo
-    if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
-      { cm.replaceSelection("", null, "cut") }
-  }
-
-  // Turn mouse into crosshair when Alt is held on Mac.
-  if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
-    { showCrossHair(cm) }
-}
-
-function showCrossHair(cm) {
-  var lineDiv = cm.display.lineDiv
-  addClass(lineDiv, "CodeMirror-crosshair")
-
-  function up(e) {
-    if (e.keyCode == 18 || !e.altKey) {
-      rmClass(lineDiv, "CodeMirror-crosshair")
-      off(document, "keyup", up)
-      off(document, "mouseover", up)
-    }
-  }
-  on(document, "keyup", up)
-  on(document, "mouseover", up)
-}
-
-function onKeyUp(e) {
-  if (e.keyCode == 16) { this.doc.sel.shift = false }
-  signalDOMEvent(this, e)
-}
-
-function onKeyPress(e) {
-  var cm = this
-  if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }
-  var keyCode = e.keyCode, charCode = e.charCode
-  if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}
-  if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }
-  var ch = String.fromCharCode(charCode == null ? keyCode : charCode)
-  // Some browsers fire keypress events for backspace
-  if (ch == "\x08") { return }
-  if (handleCharBinding(cm, e, ch)) { return }
-  cm.display.input.onKeyPress(e)
-}
-
-// A mouse down can be a single click, double click, triple click,
-// start of selection drag, start of text drag, new cursor
-// (ctrl-click), rectangle drag (alt-drag), or xwin
-// middle-click-paste. Or it might be a click on something we should
-// not interfere with, such as a scrollbar or widget.
-function onMouseDown(e) {
-  var cm = this, display = cm.display
-  if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }
-  display.input.ensurePolled()
-  display.shift = e.shiftKey
-
-  if (eventInWidget(display, e)) {
-    if (!webkit) {
-      // Briefly turn off draggability, to allow widgets to do
-      // normal dragging things.
-      display.scroller.draggable = false
-      setTimeout(function () { return display.scroller.draggable = true; }, 100)
-    }
-    return
-  }
-  if (clickInGutter(cm, e)) { return }
-  var start = posFromMouse(cm, e)
-  window.focus()
-
-  switch (e_button(e)) {
-  case 1:
-    // #3261: make sure, that we're not starting a second selection
-    if (cm.state.selectingText)
-      { cm.state.selectingText(e) }
-    else if (start)
-      { leftButtonDown(cm, e, start) }
-    else if (e_target(e) == display.scroller)
-      { e_preventDefault(e) }
-    break
-  case 2:
-    if (webkit) { cm.state.lastMiddleDown = +new Date }
-    if (start) { extendSelection(cm.doc, start) }
-    setTimeout(function () { return display.input.focus(); }, 20)
-    e_preventDefault(e)
-    break
-  case 3:
-    if (captureRightClick) { onContextMenu(cm, e) }
-    else { delayBlurEvent(cm) }
-    break
-  }
-}
-
-var lastClick;
-var lastDoubleClick;
-function leftButtonDown(cm, e, start) {
-  if (ie) { setTimeout(bind(ensureFocus, cm), 0) }
-  else { cm.curOp.focus = activeElt() }
-
-  var now = +new Date, type
-  if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
-    type = "triple"
-  } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
-    type = "double"
-    lastDoubleClick = {time: now, pos: start}
-  } else {
-    type = "single"
-    lastClick = {time: now, pos: start}
-  }
-
-  var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained
-  if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
-      type == "single" && (contained = sel.contains(start)) > -1 &&
-      (cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&
-      (cmp(contained.to(), start) > 0 || start.xRel < 0))
-    { leftButtonStartDrag(cm, e, start, modifier) }
-  else
-    { leftButtonSelect(cm, e, start, type, modifier) }
-}
-
-// Start a text drag. When it ends, see if any dragging actually
-// happen, and treat as a click if it didn't.
-function leftButtonStartDrag(cm, e, start, modifier) {
-  var display = cm.display, startTime = +new Date
-  var dragEnd = operation(cm, function (e2) {
-    if (webkit) { display.scroller.draggable = false }
-    cm.state.draggingText = false
-    off(document, "mouseup", dragEnd)
-    off(display.scroller, "drop", dragEnd)
-    if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
-      e_preventDefault(e2)
-      if (!modifier && +new Date - 200 < startTime)
-        { extendSelection(cm.doc, start) }
-      // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
-      if (webkit || ie && ie_version == 9)
-        { setTimeout(function () {document.body.focus(); display.input.focus()}, 20) }
-      else
-        { display.input.focus() }
-    }
-  })
-  // Let the drag handler handle this.
-  if (webkit) { display.scroller.draggable = true }
-  cm.state.draggingText = dragEnd
-  dragEnd.copy = mac ? e.altKey : e.ctrlKey
-  // IE's approach to draggable
-  if (display.scroller.dragDrop) { display.scroller.dragDrop() }
-  on(document, "mouseup", dragEnd)
-  on(display.scroller, "drop", dragEnd)
-}
-
-// Normal selection, as opposed to text dragging.
-function leftButtonSelect(cm, e, start, type, addNew) {
-  var display = cm.display, doc = cm.doc
-  e_preventDefault(e)
-
-  var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges
-  if (addNew && !e.shiftKey) {
-    ourIndex = doc.sel.contains(start)
-    if (ourIndex > -1)
-      { ourRange = ranges[ourIndex] }
-    else
-      { ourRange = new Range(start, start) }
-  } else {
-    ourRange = doc.sel.primary()
-    ourIndex = doc.sel.primIndex
-  }
-
-  if (chromeOS ? e.shiftKey && e.metaKey : e.altKey) {
-    type = "rect"
-    if (!addNew) { ourRange = new Range(start, start) }
-    start = posFromMouse(cm, e, true, true)
-    ourIndex = -1
-  } else if (type == "double") {
-    var word = cm.findWordAt(start)
-    if (cm.display.shift || doc.extend)
-      { ourRange = extendRange(doc, ourRange, word.anchor, word.head) }
-    else
-      { ourRange = word }
-  } else if (type == "triple") {
-    var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)))
-    if (cm.display.shift || doc.extend)
-      { ourRange = extendRange(doc, ourRange, line.anchor, line.head) }
-    else
-      { ourRange = line }
-  } else {
-    ourRange = extendRange(doc, ourRange, start)
-  }
-
-  if (!addNew) {
-    ourIndex = 0
-    setSelection(doc, new Selection([ourRange], 0), sel_mouse)
-    startSel = doc.sel
-  } else if (ourIndex == -1) {
-    ourIndex = ranges.length
-    setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
-                 {scroll: false, origin: "*mouse"})
-  } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) {
-    setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
-                 {scroll: false, origin: "*mouse"})
-    startSel = doc.sel
-  } else {
-    replaceOneSelection(doc, ourIndex, ourRange, sel_mouse)
-  }
-
-  var lastPos = start
-  function extendTo(pos) {
-    if (cmp(lastPos, pos) == 0) { return }
-    lastPos = pos
-
-    if (type == "rect") {
-      var ranges = [], tabSize = cm.options.tabSize
-      var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize)
-      var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize)
-      var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol)
-      for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
-           line <= end; line++) {
-        var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize)
-        if (left == right)
-          { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))) }
-        else if (text.length > leftPos)
-          { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))) }
-      }
-      if (!ranges.length) { ranges.push(new Range(start, start)) }
-      setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
-                   {origin: "*mouse", scroll: false})
-      cm.scrollIntoView(pos)
-    } else {
-      var oldRange = ourRange
-      var anchor = oldRange.anchor, head = pos
-      if (type != "single") {
-        var range
-        if (type == "double")
-          { range = cm.findWordAt(pos) }
-        else
-          { range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0))) }
-        if (cmp(range.anchor, anchor) > 0) {
-          head = range.head
-          anchor = minPos(oldRange.from(), range.anchor)
-        } else {
-          head = range.anchor
-          anchor = maxPos(oldRange.to(), range.head)
-        }
-      }
-      var ranges$1 = startSel.ranges.slice(0)
-      ranges$1[ourIndex] = new Range(clipPos(doc, anchor), head)
-      setSelection(doc, normalizeSelection(ranges$1, ourIndex), sel_mouse)
-    }
-  }
-
-  var editorSize = display.wrapper.getBoundingClientRect()
-  // Used to ensure timeout re-tries don't fire when another extend
-  // happened in the meantime (clearTimeout isn't reliable -- at
-  // least on Chrome, the timeouts still happen even when cleared,
-  // if the clear happens after their scheduled firing time).
-  var counter = 0
-
-  function extend(e) {
-    var curCount = ++counter
-    var cur = posFromMouse(cm, e, true, type == "rect")
-    if (!cur) { return }
-    if (cmp(cur, lastPos) != 0) {
-      cm.curOp.focus = activeElt()
-      extendTo(cur)
-      var visible = visibleLines(display, doc)
-      if (cur.line >= visible.to || cur.line < visible.from)
-        { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e) }}), 150) }
-    } else {
-      var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0
-      if (outside) { setTimeout(operation(cm, function () {
-        if (counter != curCount) { return }
-        display.scroller.scrollTop += outside
-        extend(e)
-      }), 50) }
-    }
-  }
-
-  function done(e) {
-    cm.state.selectingText = false
-    counter = Infinity
-    e_preventDefault(e)
-    display.input.focus()
-    off(document, "mousemove", move)
-    off(document, "mouseup", up)
-    doc.history.lastSelOrigin = null
-  }
-
-  var move = operation(cm, function (e) {
-    if (!e_button(e)) { done(e) }
-    else { extend(e) }
-  })
-  var up = operation(cm, done)
-  cm.state.selectingText = up
-  on(document, "mousemove", move)
-  on(document, "mouseup", up)
-}
-
-
-// Determines whether an event happened in the gutter, and fires the
-// handlers for the corresponding event.
-function gutterEvent(cm, e, type, prevent) {
-  var mX, mY
-  try { mX = e.clientX; mY = e.clientY }
-  catch(e) { return false }
-  if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }
-  if (prevent) { e_preventDefault(e) }
-
-  var display = cm.display
-  var lineBox = display.lineDiv.getBoundingClientRect()
-
-  if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }
-  mY -= lineBox.top - display.viewOffset
-
-  for (var i = 0; i < cm.options.gutters.length; ++i) {
-    var g = display.gutters.childNodes[i]
-    if (g && g.getBoundingClientRect().right >= mX) {
-      var line = lineAtHeight(cm.doc, mY)
-      var gutter = cm.options.gutters[i]
-      signal(cm, type, cm, line, gutter, e)
-      return e_defaultPrevented(e)
-    }
-  }
-}
-
-function clickInGutter(cm, e) {
-  return gutterEvent(cm, e, "gutterClick", true)
-}
-
-// CONTEXT MENU HANDLING
-
-// To make the context menu work, we need to briefly unhide the
-// textarea (making it as unobtrusive as possible) to let the
-// right-click take effect on it.
-function onContextMenu(cm, e) {
-  if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }
-  if (signalDOMEvent(cm, e, "contextmenu")) { return }
-  cm.display.input.onContextMenu(e)
-}
-
-function contextMenuInGutter(cm, e) {
-  if (!hasHandler(cm, "gutterContextMenu")) { return false }
-  return gutterEvent(cm, e, "gutterContextMenu", false)
-}
-
-function themeChanged(cm) {
-  cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
-    cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-")
-  clearCaches(cm)
-}
-
-var Init = {toString: function(){return "CodeMirror.Init"}}
-
-var defaults = {}
-var optionHandlers = {}
-
-function defineOptions(CodeMirror) {
-  var optionHandlers = CodeMirror.optionHandlers
-
-  function option(name, deflt, handle, notOnInit) {
-    CodeMirror.defaults[name] = deflt
-    if (handle) { optionHandlers[name] =
-      notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old) }} : handle }
-  }
-
-  CodeMirror.defineOption = option
-
-  // Passed to option handlers when there is no old value.
-  CodeMirror.Init = Init
-
-  // These two are, on init, called from the constructor because they
-  // have to be initialized before the editor can start at all.
-  option("value", "", function (cm, val) { return cm.setValue(val); }, true)
-  option("mode", null, function (cm, val) {
-    cm.doc.modeOption = val
-    loadMode(cm)
-  }, true)
-
-  option("indentUnit", 2, loadMode, true)
-  option("indentWithTabs", false)
-  option("smartIndent", true)
-  option("tabSize", 4, function (cm) {
-    resetModeState(cm)
-    clearCaches(cm)
-    regChange(cm)
-  }, true)
-  option("lineSeparator", null, function (cm, val) {
-    cm.doc.lineSep = val
-    if (!val) { return }
-    var newBreaks = [], lineNo = cm.doc.first
-    cm.doc.iter(function (line) {
-      for (var pos = 0;;) {
-        var found = line.text.indexOf(val, pos)
-        if (found == -1) { break }
-        pos = found + val.length
-        newBreaks.push(Pos(lineNo, found))
-      }
-      lineNo++
-    })
-    for (var i = newBreaks.length - 1; i >= 0; i--)
-      { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)) }
-  })
-  option("specialChars", /[\u0000-\u001f\u007f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) {
-    cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g")
-    if (old != Init) { cm.refresh() }
-  })
-  option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true)
-  option("electricChars", true)
-  option("inputStyle", mobile ? "contenteditable" : "textarea", function () {
-    throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME
-  }, true)
-  option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true)
-  option("rtlMoveVisually", !windows)
-  option("wholeLineUpdateBefore", true)
-
-  option("theme", "default", function (cm) {
-    themeChanged(cm)
-    guttersChanged(cm)
-  }, true)
-  option("keyMap", "default", function (cm, val, old) {
-    var next = getKeyMap(val)
-    var prev = old != Init && getKeyMap(old)
-    if (prev && prev.detach) { prev.detach(cm, next) }
-    if (next.attach) { next.attach(cm, prev || null) }
-  })
-  option("extraKeys", null)
-
-  option("lineWrapping", false, wrappingChanged, true)
-  option("gutters", [], function (cm) {
-    setGuttersForLineNumbers(cm.options)
-    guttersChanged(cm)
-  }, true)
-  option("fixedGutter", true, function (cm, val) {
-    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"
-    cm.refresh()
-  }, true)
-  option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true)
-  option("scrollbarStyle", "native", function (cm) {
-    initScrollbars(cm)
-    updateScrollbars(cm)
-    cm.display.scrollbars.setScrollTop(cm.doc.scrollTop)
-    cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft)
-  }, true)
-  option("lineNumbers", false, function (cm) {
-    setGuttersForLineNumbers(cm.options)
-    guttersChanged(cm)
-  }, true)
-  option("firstLineNumber", 1, guttersChanged, true)
-  option("lineNumberFormatter", function (integer) { return integer; }, guttersChanged, true)
-  option("showCursorWhenSelecting", false, updateSelection, true)
-
-  option("resetSelectionOnContextMenu", true)
-  option("lineWiseCopyCut", true)
-
-  option("readOnly", false, function (cm, val) {
-    if (val == "nocursor") {
-      onBlur(cm)
-      cm.display.input.blur()
-      cm.display.disabled = true
-    } else {
-      cm.display.disabled = false
-    }
-    cm.display.input.readOnlyChanged(val)
-  })
-  option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset() }}, true)
-  option("dragDrop", true, dragDropChanged)
-  option("allowDropFileTypes", null)
-
-  option("cursorBlinkRate", 530)
-  option("cursorScrollMargin", 0)
-  option("cursorHeight", 1, updateSelection, true)
-  option("singleCursorHeightPerLine", true, updateSelection, true)
-  option("workTime", 100)
-  option("workDelay", 100)
-  option("flattenSpans", true, resetModeState, true)
-  option("addModeClass", false, resetModeState, true)
-  option("pollInterval", 100)
-  option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; })
-  option("historyEventDelay", 1250)
-  option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true)
-  option("maxHighlightLength", 10000, resetModeState, true)
-  option("moveInputWithCursor", true, function (cm, val) {
-    if (!val) { cm.display.input.resetPosition() }
-  })
-
-  option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; })
-  option("autofocus", null)
-}
-
-function guttersChanged(cm) {
-  updateGutters(cm)
-  regChange(cm)
-  alignHorizontally(cm)
-}
-
-function dragDropChanged(cm, value, old) {
-  var wasOn = old && old != Init
-  if (!value != !wasOn) {
-    var funcs = cm.display.dragFunctions
-    var toggle = value ? on : off
-    toggle(cm.display.scroller, "dragstart", funcs.start)
-    toggle(cm.display.scroller, "dragenter", funcs.enter)
-    toggle(cm.display.scroller, "dragover", funcs.over)
-    toggle(cm.display.scroller, "dragleave", funcs.leave)
-    toggle(cm.display.scroller, "drop", funcs.drop)
-  }
-}
-
-function wrappingChanged(cm) {
-  if (cm.options.lineWrapping) {
-    addClass(cm.display.wrapper, "CodeMirror-wrap")
-    cm.display.sizer.style.minWidth = ""
-    cm.display.sizerWidth = null
-  } else {
-    rmClass(cm.display.wrapper, "CodeMirror-wrap")
-    findMaxLine(cm)
-  }
-  estimateLineHeights(cm)
-  regChange(cm)
-  clearCaches(cm)
-  setTimeout(function () { return updateScrollbars(cm); }, 100)
-}
-
-// A CodeMirror instance represents an editor. This is the object
-// that user code is usually dealing with.
-
-function CodeMirror(place, options) {
-  var this$1 = this;
-
-  if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }
-
-  this.options = options = options ? copyObj(options) : {}
-  // Determine effective options based on given values and defaults.
-  copyObj(defaults, options, false)
-  setGuttersForLineNumbers(options)
-
-  var doc = options.value
-  if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator) }
-  this.doc = doc
-
-  var input = new CodeMirror.inputStyles[options.inputStyle](this)
-  var display = this.display = new Display(place, doc, input)
-  display.wrapper.CodeMirror = this
-  updateGutters(this)
-  themeChanged(this)
-  if (options.lineWrapping)
-    { this.display.wrapper.className += " CodeMirror-wrap" }
-  initScrollbars(this)
-
-  this.state = {
-    keyMaps: [],  // stores maps added by addKeyMap
-    overlays: [], // highlighting overlays, as added by addOverlay
-    modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
-    overwrite: false,
-    delayingBlurEvent: false,
-    focused: false,
-    suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
-    pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
-    selectingText: false,
-    draggingText: false,
-    highlight: new Delayed(), // stores highlight worker timeout
-    keySeq: null,  // Unfinished key sequence
-    specialChars: null
-  }
-
-  if (options.autofocus && !mobile) { display.input.focus() }
-
-  // Override magic textarea content restore that IE sometimes does
-  // on our hidden textarea on reload
-  if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20) }
-
-  registerEventHandlers(this)
-  ensureGlobalHandlers()
-
-  startOperation(this)
-  this.curOp.forceUpdate = true
-  attachDoc(this, doc)
-
-  if ((options.autofocus && !mobile) || this.hasFocus())
-    { setTimeout(bind(onFocus, this), 20) }
-  else
-    { onBlur(this) }
-
-  for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))
-    { optionHandlers[opt](this$1, options[opt], Init) } }
-  maybeUpdateLineNumberWidth(this)
-  if (options.finishInit) { options.finishInit(this) }
-  for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1) }
-  endOperation(this)
-  // Suppress optimizelegibility in Webkit, since it breaks text
-  // measuring on line wrapping boundaries.
-  if (webkit && options.lineWrapping &&
-      getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
-    { display.lineDiv.style.textRendering = "auto" }
-}
-
-// The default configuration options.
-CodeMirror.defaults = defaults
-// Functions to run when options are changed.
-CodeMirror.optionHandlers = optionHandlers
-
-// Attach the necessary event handlers when initializing the editor
-function registerEventHandlers(cm) {
-  var d = cm.display
-  on(d.scroller, "mousedown", operation(cm, onMouseDown))
-  // Older IE's will not fire a second mousedown for a double click
-  if (ie && ie_version < 11)
-    { on(d.scroller, "dblclick", operation(cm, function (e) {
-      if (signalDOMEvent(cm, e)) { return }
-      var pos = posFromMouse(cm, e)
-      if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }
-      e_preventDefault(e)
-      var word = cm.findWordAt(pos)
-      extendSelection(cm.doc, word.anchor, word.head)
-    })) }
-  else
-    { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }) }
-  // Some browsers fire contextmenu *after* opening the menu, at
-  // which point we can't mess with it anymore. Context menu is
-  // handled in onMouseDown for these browsers.
-  if (!captureRightClick) { on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); }) }
-
-  // Used to suppress mouse event handling when a touch happens
-  var touchFinished, prevTouch = {end: 0}
-  function finishTouch() {
-    if (d.activeTouch) {
-      touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000)
-      prevTouch = d.activeTouch
-      prevTouch.end = +new Date
-    }
-  }
-  function isMouseLikeTouchEvent(e) {
-    if (e.touches.length != 1) { return false }
-    var touch = e.touches[0]
-    return touch.radiusX <= 1 && touch.radiusY <= 1
-  }
-  function farAway(touch, other) {
-    if (other.left == null) { return true }
-    var dx = other.left - touch.left, dy = other.top - touch.top
-    return dx * dx + dy * dy > 20 * 20
-  }
-  on(d.scroller, "touchstart", function (e) {
-    if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e)) {
-      d.input.ensurePolled()
-      clearTimeout(touchFinished)
-      var now = +new Date
-      d.activeTouch = {start: now, moved: false,
-                       prev: now - prevTouch.end <= 300 ? prevTouch : null}
-      if (e.touches.length == 1) {
-        d.activeTouch.left = e.touches[0].pageX
-        d.activeTouch.top = e.touches[0].pageY
-      }
-    }
-  })
-  on(d.scroller, "touchmove", function () {
-    if (d.activeTouch) { d.activeTouch.moved = true }
-  })
-  on(d.scroller, "touchend", function (e) {
-    var touch = d.activeTouch
-    if (touch && !eventInWidget(d, e) && touch.left != null &&
-        !touch.moved && new Date - touch.start < 300) {
-      var pos = cm.coordsChar(d.activeTouch, "page"), range
-      if (!touch.prev || farAway(touch, touch.prev)) // Single tap
-        { range = new Range(pos, pos) }
-      else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
-        { range = cm.findWordAt(pos) }
-      else // Triple tap
-        { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }
-      cm.setSelection(range.anchor, range.head)
-      cm.focus()
-      e_preventDefault(e)
-    }
-    finishTouch()
-  })
-  on(d.scroller, "touchcancel", finishTouch)
-
-  // Sync scrolling between fake scrollbars and real scrollable
-  // area, ensure viewport is updated when scrolling.
-  on(d.scroller, "scroll", function () {
-    if (d.scroller.clientHeight) {
-      setScrollTop(cm, d.scroller.scrollTop)
-      setScrollLeft(cm, d.scroller.scrollLeft, true)
-      signal(cm, "scroll", cm)
-    }
-  })
-
-  // Listen to wheel events in order to try and update the viewport on time.
-  on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); })
-  on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); })
-
-  // Prevent wrapper from ever scrolling
-  on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; })
-
-  d.dragFunctions = {
-    enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e) }},
-    over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e) }},
-    start: function (e) { return onDragStart(cm, e); },
-    drop: operation(cm, onDrop),
-    leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm) }}
-  }
-
-  var inp = d.input.getField()
-  on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); })
-  on(inp, "keydown", operation(cm, onKeyDown))
-  on(inp, "keypress", operation(cm, onKeyPress))
-  on(inp, "focus", function (e) { return onFocus(cm, e); })
-  on(inp, "blur", function (e) { return onBlur(cm, e); })
-}
-
-var initHooks = []
-CodeMirror.defineInitHook = function (f) { return initHooks.push(f); }
-
-// Indent the given line. The how parameter can be "smart",
-// "add"/null, "subtract", or "prev". When aggressive is false
-// (typically set to true for forced single-line indents), empty
-// lines are not indented, and places where the mode returns Pass
-// are left alone.
-function indentLine(cm, n, how, aggressive) {
-  var doc = cm.doc, state
-  if (how == null) { how = "add" }
-  if (how == "smart") {
-    // Fall back to "prev" when the mode doesn't have an indentation
-    // method.
-    if (!doc.mode.indent) { how = "prev" }
-    else { state = getStateBefore(cm, n) }
-  }
-
-  var tabSize = cm.options.tabSize
-  var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize)
-  if (line.stateAfter) { line.stateAfter = null }
-  var curSpaceString = line.text.match(/^\s*/)[0], indentation
-  if (!aggressive && !/\S/.test(line.text)) {
-    indentation = 0
-    how = "not"
-  } else if (how == "smart") {
-    indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text)
-    if (indentation == Pass || indentation > 150) {
-      if (!aggressive) { return }
-      how = "prev"
-    }
-  }
-  if (how == "prev") {
-    if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize) }
-    else { indentation = 0 }
-  } else if (how == "add") {
-    indentation = curSpace + cm.options.indentUnit
-  } else if (how == "subtract") {
-    indentation = curSpace - cm.options.indentUnit
-  } else if (typeof how == "number") {
-    indentation = curSpace + how
-  }
-  indentation = Math.max(0, indentation)
-
-  var indentString = "", pos = 0
-  if (cm.options.indentWithTabs)
-    { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t"} }
-  if (pos < indentation) { indentString += spaceStr(indentation - pos) }
-
-  if (indentString != curSpaceString) {
-    replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input")
-    line.stateAfter = null
-    return true
-  } else {
-    // Ensure that, if the cursor was in the whitespace at the start
-    // of the line, it is moved to the end of that space.
-    for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {
-      var range = doc.sel.ranges[i$1]
-      if (range.head.line == n && range.head.ch < curSpaceString.length) {
-        var pos$1 = Pos(n, curSpaceString.length)
-        replaceOneSelection(doc, i$1, new Range(pos$1, pos$1))
-        break
-      }
-    }
-  }
-}
-
-// This will be set to a {lineWise: bool, text: [string]} object, so
-// that, when pasting, we know what kind of selections the copied
-// text was made out of.
-var lastCopied = null
-
-function setLastCopied(newLastCopied) {
-  lastCopied = newLastCopied
-}
-
-function applyTextInput(cm, inserted, deleted, sel, origin) {
-  var doc = cm.doc
-  cm.display.shift = false
-  if (!sel) { sel = doc.sel }
-
-  var paste = cm.state.pasteIncoming || origin == "paste"
-  var textLines = splitLinesAuto(inserted), multiPaste = null
-  // When pasing N lines into N selections, insert one line per selection
-  if (paste && sel.ranges.length > 1) {
-    if (lastCopied && lastCopied.text.join("\n") == inserted) {
-      if (sel.ranges.length % lastCopied.text.length == 0) {
-        multiPaste = []
-        for (var i = 0; i < lastCopied.text.length; i++)
-          { multiPaste.push(doc.splitLines(lastCopied.text[i])) }
-      }
-    } else if (textLines.length == sel.ranges.length) {
-      multiPaste = map(textLines, function (l) { return [l]; })
-    }
-  }
-
-  var updateInput
-  // Normal behavior is to insert the new text into every selection
-  for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
-    var range = sel.ranges[i$1]
-    var from = range.from(), to = range.to()
-    if (range.empty()) {
-      if (deleted && deleted > 0) // Handle deletion
-        { from = Pos(from.line, from.ch - deleted) }
-      else if (cm.state.overwrite && !paste) // Handle overwrite
-        { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)) }
-      else if (lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted)
-        { from = to = Pos(from.line, 0) }
-    }
-    updateInput = cm.curOp.updateInput
-    var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
-                       origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")}
-    makeChange(cm.doc, changeEvent)
-    signalLater(cm, "inputRead", cm, changeEvent)
-  }
-  if (inserted && !paste)
-    { triggerElectric(cm, inserted) }
-
-  ensureCursorVisible(cm)
-  cm.curOp.updateInput = updateInput
-  cm.curOp.typing = true
-  cm.state.pasteIncoming = cm.state.cutIncoming = false
-}
-
-function handlePaste(e, cm) {
-  var pasted = e.clipboardData && e.clipboardData.getData("Text")
-  if (pasted) {
-    e.preventDefault()
-    if (!cm.isReadOnly() && !cm.options.disableInput)
-      { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }) }
-    return true
-  }
-}
-
-function triggerElectric(cm, inserted) {
-  // When an 'electric' character is inserted, immediately trigger a reindent
-  if (!cm.options.electricChars || !cm.options.smartIndent) { return }
-  var sel = cm.doc.sel
-
-  for (var i = sel.ranges.length - 1; i >= 0; i--) {
-    var range = sel.ranges[i]
-    if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }
-    var mode = cm.getModeAt(range.head)
-    var indented = false
-    if (mode.electricChars) {
-      for (var j = 0; j < mode.electricChars.length; j++)
-        { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
-          indented = indentLine(cm, range.head.line, "smart")
-          break
-        } }
-    } else if (mode.electricInput) {
-      if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
-        { indented = indentLine(cm, range.head.line, "smart") }
-    }
-    if (indented) { signalLater(cm, "electricInput", cm, range.head.line) }
-  }
-}
-
-function copyableRanges(cm) {
-  var text = [], ranges = []
-  for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
-    var line = cm.doc.sel.ranges[i].head.line
-    var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}
-    ranges.push(lineRange)
-    text.push(cm.getRange(lineRange.anchor, lineRange.head))
-  }
-  return {text: text, ranges: ranges}
-}
-
-function disableBrowserMagic(field, spellcheck) {
-  field.setAttribute("autocorrect", "off")
-  field.setAttribute("autocapitalize", "off")
-  field.setAttribute("spellcheck", !!spellcheck)
-}
-
-function hiddenTextarea() {
-  var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none")
-  var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;")
-  // The textarea is kept positioned near the cursor to prevent the
-  // fact that it'll be scrolled into view on input from scrolling
-  // our fake cursor out of view. On webkit, when wrap=off, paste is
-  // very slow. So make the area wide instead.
-  if (webkit) { te.style.width = "1000px" }
-  else { te.setAttribute("wrap", "off") }
-  // If border: 0; -- iOS fails to open keyboard (issue #1287)
-  if (ios) { te.style.border = "1px solid black" }
-  disableBrowserMagic(te)
-  return div
-}
-
-// The publicly visible API. Note that methodOp(f) means
-// 'wrap f in an operation, performed on its `this` parameter'.
-
-// This is not the complete set of editor methods. Most of the
-// methods defined on the Doc type are also injected into
-// CodeMirror.prototype, for backwards compatibility and
-// convenience.
-
-function addEditorMethods(CodeMirror) {
-  var optionHandlers = CodeMirror.optionHandlers
-
-  var helpers = CodeMirror.helpers = {}
-
-  CodeMirror.prototype = {
-    constructor: CodeMirror,
-    focus: function(){window.focus(); this.display.input.focus()},
-
-    setOption: function(option, value) {
-      var options = this.options, old = options[option]
-      if (options[option] == value && option != "mode") { return }
-      options[option] = value
-      if (optionHandlers.hasOwnProperty(option))
-        { operation(this, optionHandlers[option])(this, value, old) }
-      signal(this, "optionChange", this, option)
-    },
-
-    getOption: function(option) {return this.options[option]},
-    getDoc: function() {return this.doc},
-
-    addKeyMap: function(map, bottom) {
-      this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map))
-    },
-    removeKeyMap: function(map) {
-      var maps = this.state.keyMaps
-      for (var i = 0; i < maps.length; ++i)
-        { if (maps[i] == map || maps[i].name == map) {
-          maps.splice(i, 1)
-          return true
-        } }
-    },
-
-    addOverlay: methodOp(function(spec, options) {
-      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec)
-      if (mode.startState) { throw new Error("Overlays may not be stateful.") }
-      insertSorted(this.state.overlays,
-                   {mode: mode, modeSpec: spec, opaque: options && options.opaque,
-                    priority: (options && options.priority) || 0},
-                   function (overlay) { return overlay.priority; })
-      this.state.modeGen++
-      regChange(this)
-    }),
-    removeOverlay: methodOp(function(spec) {
-      var this$1 = this;
-
-      var overlays = this.state.overlays
-      for (var i = 0; i < overlays.length; ++i) {
-        var cur = overlays[i].modeSpec
-        if (cur == spec || typeof spec == "string" && cur.name == spec) {
-          overlays.splice(i, 1)
-          this$1.state.modeGen++
-          regChange(this$1)
-          return
-        }
-      }
-    }),
-
-    indentLine: methodOp(function(n, dir, aggressive) {
-      if (typeof dir != "string" && typeof dir != "number") {
-        if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev" }
-        else { dir = dir ? "add" : "subtract" }
-      }
-      if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive) }
-    }),
-    indentSelection: methodOp(function(how) {
-      var this$1 = this;
-
-      var ranges = this.doc.sel.ranges, end = -1
-      for (var i = 0; i < ranges.length; i++) {
-        var range = ranges[i]
-        if (!range.empty()) {
-          var from = range.from(), to = range.to()
-          var start = Math.max(end, from.line)
-          end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1
-          for (var j = start; j < end; ++j)
-            { indentLine(this$1, j, how) }
-          var newRanges = this$1.doc.sel.ranges
-          if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
-            { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll) }
-        } else if (range.head.line > end) {
-          indentLine(this$1, range.head.line, how, true)
-          end = range.head.line
-          if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1) }
-        }
-      }
-    }),
-
-    // Fetch the parser token for a given character. Useful for hacks
-    // that want to inspect the mode state (say, for completion).
-    getTokenAt: function(pos, precise) {
-      return takeToken(this, pos, precise)
-    },
-
-    getLineTokens: function(line, precise) {
-      return takeToken(this, Pos(line), precise, true)
-    },
-
-    getTokenTypeAt: function(pos) {
-      pos = clipPos(this.doc, pos)
-      var styles = getLineStyles(this, getLine(this.doc, pos.line))
-      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch
-      var type
-      if (ch == 0) { type = styles[2] }
-      else { for (;;) {
-        var mid = (before + after) >> 1
-        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid }
-        else if (styles[mid * 2 + 1] < ch) { before = mid + 1 }
-        else { type = styles[mid * 2 + 2]; break }
-      } }
-      var cut = type ? type.indexOf("overlay ") : -1
-      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
-    },
-
-    getModeAt: function(pos) {
-      var mode = this.doc.mode
-      if (!mode.innerMode) { return mode }
-      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
-    },
-
-    getHelper: function(pos, type) {
-      return this.getHelpers(pos, type)[0]
-    },
-
-    getHelpers: function(pos, type) {
-      var this$1 = this;
-
-      var found = []
-      if (!helpers.hasOwnProperty(type)) { return found }
-      var help = helpers[type], mode = this.getModeAt(pos)
-      if (typeof mode[type] == "string") {
-        if (help[mode[type]]) { found.push(help[mode[type]]) }
-      } else if (mode[type]) {
-        for (var i = 0; i < mode[type].length; i++) {
-          var val = help[mode[type][i]]
-          if (val) { found.push(val) }
-        }
-      } else if (mode.helperType && help[mode.helperType]) {
-        found.push(help[mode.helperType])
-      } else if (help[mode.name]) {
-        found.push(help[mode.name])
-      }
-      for (var i$1 = 0; i$1 < help._global.length; i$1++) {
-        var cur = help._global[i$1]
-        if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1)
-          { found.push(cur.val) }
-      }
-      return found
-    },
-
-    getStateAfter: function(line, precise) {
-      var doc = this.doc
-      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line)
-      return getStateBefore(this, line + 1, precise)
-    },
-
-    cursorCoords: function(start, mode) {
-      var pos, range = this.doc.sel.primary()
-      if (start == null) { pos = range.head }
-      else if (typeof start == "object") { pos = clipPos(this.doc, start) }
-      else { pos = start ? range.from() : range.to() }
-      return cursorCoords(this, pos, mode || "page")
-    },
-
-    charCoords: function(pos, mode) {
-      return charCoords(this, clipPos(this.doc, pos), mode || "page")
-    },
-
-    coordsChar: function(coords, mode) {
-      coords = fromCoordSystem(this, coords, mode || "page")
-      return coordsChar(this, coords.left, coords.top)
-    },
-
-    lineAtHeight: function(height, mode) {
-      height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top
-      return lineAtHeight(this.doc, height + this.display.viewOffset)
-    },
-    heightAtLine: function(line, mode, includeWidgets) {
-      var end = false, lineObj
-      if (typeof line == "number") {
-        var last = this.doc.first + this.doc.size - 1
-        if (line < this.doc.first) { line = this.doc.first }
-        else if (line > last) { line = last; end = true }
-        lineObj = getLine(this.doc, line)
-      } else {
-        lineObj = line
-      }
-      return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets).top +
-        (end ? this.doc.height - heightAtLine(lineObj) : 0)
-    },
-
-    defaultTextHeight: function() { return textHeight(this.display) },
-    defaultCharWidth: function() { return charWidth(this.display) },
-
-    getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},
-
-    addWidget: function(pos, node, scroll, vert, horiz) {
-      var display = this.display
-      pos = cursorCoords(this, clipPos(this.doc, pos))
-      var top = pos.bottom, left = pos.left
-      node.style.position = "absolute"
-      node.setAttribute("cm-ignore-events", "true")
-      this.display.input.setUneditable(node)
-      display.sizer.appendChild(node)
-      if (vert == "over") {
-        top = pos.top
-      } else if (vert == "above" || vert == "near") {
-        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
-        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth)
-        // Default to positioning above (if specified and possible); otherwise default to positioning below
-        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
-          { top = pos.top - node.offsetHeight }
-        else if (pos.bottom + node.offsetHeight <= vspace)
-          { top = pos.bottom }
-        if (left + node.offsetWidth > hspace)
-          { left = hspace - node.offsetWidth }
-      }
-      node.style.top = top + "px"
-      node.style.left = node.style.right = ""
-      if (horiz == "right") {
-        left = display.sizer.clientWidth - node.offsetWidth
-        node.style.right = "0px"
-      } else {
-        if (horiz == "left") { left = 0 }
-        else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2 }
-        node.style.left = left + "px"
-      }
-      if (scroll)
-        { scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight) }
-    },
-
-    triggerOnKeyDown: methodOp(onKeyDown),
-    triggerOnKeyPress: methodOp(onKeyPress),
-    triggerOnKeyUp: onKeyUp,
-
-    execCommand: function(cmd) {
-      if (commands.hasOwnProperty(cmd))
-        { return commands[cmd].call(null, this) }
-    },
-
-    triggerElectric: methodOp(function(text) { triggerElectric(this, text) }),
-
-    findPosH: function(from, amount, unit, visually) {
-      var this$1 = this;
-
-      var dir = 1
-      if (amount < 0) { dir = -1; amount = -amount }
-      var cur = clipPos(this.doc, from)
-      for (var i = 0; i < amount; ++i) {
-        cur = findPosH(this$1.doc, cur, dir, unit, visually)
-        if (cur.hitSide) { break }
-      }
-      return cur
-    },
-
-    moveH: methodOp(function(dir, unit) {
-      var this$1 = this;
-
-      this.extendSelectionsBy(function (range) {
-        if (this$1.display.shift || this$1.doc.extend || range.empty())
-          { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) }
-        else
-          { return dir < 0 ? range.from() : range.to() }
-      }, sel_move)
-    }),
-
-    deleteH: methodOp(function(dir, unit) {
-      var sel = this.doc.sel, doc = this.doc
-      if (sel.somethingSelected())
-        { doc.replaceSelection("", null, "+delete") }
-      else
-        { deleteNearSelection(this, function (range) {
-          var other = findPosH(doc, range.head, dir, unit, false)
-          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}
-        }) }
-    }),
-
-    findPosV: function(from, amount, unit, goalColumn) {
-      var this$1 = this;
-
-      var dir = 1, x = goalColumn
-      if (amount < 0) { dir = -1; amount = -amount }
-      var cur = clipPos(this.doc, from)
-      for (var i = 0; i < amount; ++i) {
-        var coords = cursorCoords(this$1, cur, "div")
-        if (x == null) { x = coords.left }
-        else { coords.left = x }
-        cur = findPosV(this$1, coords, dir, unit)
-        if (cur.hitSide) { break }
-      }
-      return cur
-    },
-
-    moveV: methodOp(function(dir, unit) {
-      var this$1 = this;
-
-      var doc = this.doc, goals = []
-      var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected()
-      doc.extendSelectionsBy(function (range) {
-        if (collapse)
-          { return dir < 0 ? range.from() : range.to() }
-        var headPos = cursorCoords(this$1, range.head, "div")
-        if (range.goalColumn != null) { headPos.left = range.goalColumn }
-        goals.push(headPos.left)
-        var pos = findPosV(this$1, headPos, dir, unit)
-        if (unit == "page" && range == doc.sel.primary())
-          { addToScrollPos(this$1, null, charCoords(this$1, pos, "div").top - headPos.top) }
-        return pos
-      }, sel_move)
-      if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)
-        { doc.sel.ranges[i].goalColumn = goals[i] } }
-    }),
-
-    // Find the word at the given position (as returned by coordsChar).
-    findWordAt: function(pos) {
-      var doc = this.doc, line = getLine(doc, pos.line).text
-      var start = pos.ch, end = pos.ch
-      if (line) {
-        var helper = this.getHelper(pos, "wordChars")
-        if ((pos.xRel < 0 || end == line.length) && start) { --start; } else { ++end }
-        var startChar = line.charAt(start)
-        var check = isWordChar(startChar, helper)
-          ? function (ch) { return isWordChar(ch, helper); }
-          : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); }
-          : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); }
-        while (start > 0 && check(line.charAt(start - 1))) { --start }
-        while (end < line.length && check(line.charAt(end))) { ++end }
-      }
-      return new Range(Pos(pos.line, start), Pos(pos.line, end))
-    },
-
-    toggleOverwrite: function(value) {
-      if (value != null && value == this.state.overwrite) { return }
-      if (this.state.overwrite = !this.state.overwrite)
-        { addClass(this.display.cursorDiv, "CodeMirror-overwrite") }
-      else
-        { rmClass(this.display.cursorDiv, "CodeMirror-overwrite") }
-
-      signal(this, "overwriteToggle", this, this.state.overwrite)
-    },
-    hasFocus: function() { return this.display.input.getField() == activeElt() },
-    isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },
-
-    scrollTo: methodOp(function(x, y) {
-      if (x != null || y != null) { resolveScrollToPos(this) }
-      if (x != null) { this.curOp.scrollLeft = x }
-      if (y != null) { this.curOp.scrollTop = y }
-    }),
-    getScrollInfo: function() {
-      var scroller = this.display.scroller
-      return {left: scroller.scrollLeft, top: scroller.scrollTop,
-              height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
-              width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
-              clientHeight: displayHeight(this), clientWidth: displayWidth(this)}
-    },
-
-    scrollIntoView: methodOp(function(range, margin) {
-      if (range == null) {
-        range = {from: this.doc.sel.primary().head, to: null}
-        if (margin == null) { margin = this.options.cursorScrollMargin }
-      } else if (typeof range == "number") {
-        range = {from: Pos(range, 0), to: null}
-      } else if (range.from == null) {
-        range = {from: range, to: null}
-      }
-      if (!range.to) { range.to = range.from }
-      range.margin = margin || 0
-
-      if (range.from.line != null) {
-        resolveScrollToPos(this)
-        this.curOp.scrollToPos = range
-      } else {
-        var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
-                                      Math.min(range.from.top, range.to.top) - range.margin,
-                                      Math.max(range.from.right, range.to.right),
-                                      Math.max(range.from.bottom, range.to.bottom) + range.margin)
-        this.scrollTo(sPos.scrollLeft, sPos.scrollTop)
-      }
-    }),
-
-    setSize: methodOp(function(width, height) {
-      var this$1 = this;
-
-      var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; }
-      if (width != null) { this.display.wrapper.style.width = interpret(width) }
-      if (height != null) { this.display.wrapper.style.height = interpret(height) }
-      if (this.options.lineWrapping) { clearLineMeasurementCache(this) }
-      var lineNo = this.display.viewFrom
-      this.doc.iter(lineNo, this.display.viewTo, function (line) {
-        if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)
-          { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, "widget"); break } } }
-        ++lineNo
-      })
-      this.curOp.forceUpdate = true
-      signal(this, "refresh", this)
-    }),
-
-    operation: function(f){return runInOp(this, f)},
-
-    refresh: methodOp(function() {
-      var oldHeight = this.display.cachedTextHeight
-      regChange(this)
-      this.curOp.forceUpdate = true
-      clearCaches(this)
-      this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop)
-      updateGutterSpace(this)
-      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
-        { estimateLineHeights(this) }
-      signal(this, "refresh", this)
-    }),
-
-    swapDoc: methodOp(function(doc) {
-      var old = this.doc
-      old.cm = null
-      attachDoc(this, doc)
-      clearCaches(this)
-      this.display.input.reset()
-      this.scrollTo(doc.scrollLeft, doc.scrollTop)
-      this.curOp.forceScroll = true
-      signalLater(this, "swapDoc", this, old)
-      return old
-    }),
-
-    getInputField: function(){return this.display.input.getField()},
-    getWrapperElement: function(){return this.display.wrapper},
-    getScrollerElement: function(){return this.display.scroller},
-    getGutterElement: function(){return this.display.gutters}
-  }
-  eventMixin(CodeMirror)
-
-  CodeMirror.registerHelper = function(type, name, value) {
-    if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []} }
-    helpers[type][name] = value
-  }
-  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
-    CodeMirror.registerHelper(type, name, value)
-    helpers[type]._global.push({pred: predicate, val: value})
-  }
-}
-
-// Used for horizontal relative motion. Dir is -1 or 1 (left or
-// right), unit can be "char", "column" (like char, but doesn't
-// cross line boundaries), "word" (across next word), or "group" (to
-// the start of next group of word or non-word-non-whitespace
-// chars). The visually param controls whether, in right-to-left
-// text, direction 1 means to move towards the next index in the
-// string, or towards the character to the right of the current
-// position. The resulting position will have a hitSide=true
-// property if it reached the end of the document.
-function findPosH(doc, pos, dir, unit, visually) {
-  var line = pos.line, ch = pos.ch, origDir = dir
-  var lineObj = getLine(doc, line)
-  function findNextLine() {
-    var l = line + dir
-    if (l < doc.first || l >= doc.first + doc.size) { return false }
-    line = l
-    return lineObj = getLine(doc, l)
-  }
-  function moveOnce(boundToLine) {
-    var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true)
-    if (next == null) {
-      if (!boundToLine && findNextLine()) {
-        if (visually) { ch = (dir < 0 ? lineRight : lineLeft)(lineObj) }
-        else { ch = dir < 0 ? lineObj.text.length : 0 }
-      } else { return false }
-    } else { ch = next }
-    return true
-  }
-
-  if (unit == "char") {
-    moveOnce()
-  } else if (unit == "column") {
-    moveOnce(true)
-  } else if (unit == "word" || unit == "group") {
-    var sawType = null, group = unit == "group"
-    var helper = doc.cm && doc.cm.getHelper(pos, "wordChars")
-    for (var first = true;; first = false) {
-      if (dir < 0 && !moveOnce(!first)) { break }
-      var cur = lineObj.text.charAt(ch) || "\n"
-      var type = isWordChar(cur, helper) ? "w"
-        : group && cur == "\n" ? "n"
-        : !group || /\s/.test(cur) ? null
-        : "p"
-      if (group && !first && !type) { type = "s" }
-      if (sawType && sawType != type) {
-        if (dir < 0) {dir = 1; moveOnce()}
-        break
-      }
-
-      if (type) { sawType = type }
-      if (dir > 0 && !moveOnce(!first)) { break }
-    }
-  }
-  var result = skipAtomic(doc, Pos(line, ch), pos, origDir, true)
-  if (!cmp(pos, result)) { result.hitSide = true }
-  return result
-}
-
-// For relative vertical movement. Dir may be -1 or 1. Unit can be
-// "page" or "line". The resulting position will have a hitSide=true
-// property if it reached the end of the document.
-function findPosV(cm, pos, dir, unit) {
-  var doc = cm.doc, x = pos.left, y
-  if (unit == "page") {
-    var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight)
-    var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3)
-    y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount
-
-  } else if (unit == "line") {
-    y = dir > 0 ? pos.bottom + 3 : pos.top - 3
-  }
-  var target
-  for (;;) {
-    target = coordsChar(cm, x, y)
-    if (!target.outside) { break }
-    if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }
-    y += dir * 5
-  }
-  return target
-}
-
-// CONTENTEDITABLE INPUT STYLE
-
-var ContentEditableInput = function(cm) {
-  this.cm = cm
-  this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null
-  this.polling = new Delayed()
-  this.composing = null
-  this.gracePeriod = false
-  this.readDOMTimeout = null
-};
-
-ContentEditableInput.prototype.init = function (display) {
-    var this$1 = this;
-
-  var input = this, cm = input.cm
-  var div = input.div = display.lineDiv
-  disableBrowserMagic(div, cm.options.spellcheck)
-
-  on(div, "paste", function (e) {
-    if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }
-    // IE doesn't fire input events, so we schedule a read for the pasted content in this way
-    if (ie_version <= 11) { setTimeout(operation(cm, function () {
-      if (!input.pollContent()) { regChange(cm) }
-    }), 20) }
-  })
-
-  on(div, "compositionstart", function (e) {
-    this$1.composing = {data: e.data, done: false}
-  })
-  on(div, "compositionupdate", function (e) {
-    if (!this$1.composing) { this$1.composing = {data: e.data, done: false} }
-  })
-  on(div, "compositionend", function (e) {
-    if (this$1.composing) {
-      if (e.data != this$1.composing.data) { this$1.readFromDOMSoon() }
-      this$1.composing.done = true
-    }
-  })
-
-  on(div, "touchstart", function () { return input.forceCompositionEnd(); })
-
-  on(div, "input", function () {
-    if (!this$1.composing) { this$1.readFromDOMSoon() }
-  })
-
-  function onCopyCut(e) {
-    if (signalDOMEvent(cm, e)) { return }
-    if (cm.somethingSelected()) {
-      setLastCopied({lineWise: false, text: cm.getSelections()})
-      if (e.type == "cut") { cm.replaceSelection("", null, "cut") }
-    } else if (!cm.options.lineWiseCopyCut) {
-      return
-    } else {
-      var ranges = copyableRanges(cm)
-      setLastCopied({lineWise: true, text: ranges.text})
-      if (e.type == "cut") {
-        cm.operation(function () {
-          cm.setSelections(ranges.ranges, 0, sel_dontScroll)
-          cm.replaceSelection("", null, "cut")
-        })
-      }
-    }
-    if (e.clipboardData) {
-      e.clipboardData.clearData()
-      var content = lastCopied.text.join("\n")
-      // iOS exposes the clipboard API, but seems to discard content inserted into it
-      e.clipboardData.setData("Text", content)
-      if (e.clipboardData.getData("Text") == content) {
-        e.preventDefault()
-        return
-      }
-    }
-    // Old-fashioned briefly-focus-a-textarea hack
-    var kludge = hiddenTextarea(), te = kludge.firstChild
-    cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild)
-    te.value = lastCopied.text.join("\n")
-    var hadFocus = document.activeElement
-    selectInput(te)
-    setTimeout(function () {
-      cm.display.lineSpace.removeChild(kludge)
-      hadFocus.focus()
-      if (hadFocus == div) { input.showPrimarySelection() }
-    }, 50)
-  }
-  on(div, "copy", onCopyCut)
-  on(div, "cut", onCopyCut)
-};
-
-ContentEditableInput.prototype.prepareSelection = function () {
-  var result = prepareSelection(this.cm, false)
-  result.focus = this.cm.state.focused
-  return result
-};
-
-ContentEditableInput.prototype.showSelection = function (info, takeFocus) {
-  if (!info || !this.cm.display.view.length) { return }
-  if (info.focus || takeFocus) { this.showPrimarySelection() }
-  this.showMultipleSelections(info)
-};
-
-ContentEditableInput.prototype.showPrimarySelection = function () {
-  var sel = window.getSelection(), prim = this.cm.doc.sel.primary()
-  var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset)
-  var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset)
-  if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
-      cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
-      cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
-    { return }
-
-  var start = posToDOM(this.cm, prim.from())
-  var end = posToDOM(this.cm, prim.to())
-  if (!start && !end) { return }
-
-  var view = this.cm.display.view
-  var old = sel.rangeCount && sel.getRangeAt(0)
-  if (!start) {
-    start = {node: view[0].measure.map[2], offset: 0}
-  } else if (!end) { // FIXME dangerously hacky
-    var measure = view[view.length - 1].measure
-    var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map
-    end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]}
-  }
-
-  var rng
-  try { rng = range(start.node, start.offset, end.offset, end.node) }
-  catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
-  if (rng) {
-    if (!gecko && this.cm.state.focused) {
-      sel.collapse(start.node, start.offset)
-      if (!rng.collapsed) {
-        sel.removeAllRanges()
-        sel.addRange(rng)
-      }
-    } else {
-      sel.removeAllRanges()
-      sel.addRange(rng)
-    }
-    if (old && sel.anchorNode == null) { sel.addRange(old) }
-    else if (gecko) { this.startGracePeriod() }
-  }
-  this.rememberSelection()
-};
-
-ContentEditableInput.prototype.startGracePeriod = function () {
-    var this$1 = this;
-
-  clearTimeout(this.gracePeriod)
-  this.gracePeriod = setTimeout(function () {
-    this$1.gracePeriod = false
-    if (this$1.selectionChanged())
-      { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }) }
-  }, 20)
-};
-
-ContentEditableInput.prototype.showMultipleSelections = function (info) {
-  removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors)
-  removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection)
-};
-
-ContentEditableInput.prototype.rememberSelection = function () {
-  var sel = window.getSelection()
-  this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset
-  this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset
-};
-
-ContentEditableInput.prototype.selectionInEditor = function () {
-  var sel = window.getSelection()
-  if (!sel.rangeCount) { return false }
-  var node = sel.getRangeAt(0).commonAncestorContainer
-  return contains(this.div, node)
-};
-
-ContentEditableInput.prototype.focus = function () {
-  if (this.cm.options.readOnly != "nocursor") {
-    if (!this.selectionInEditor())
-      { this.showSelection(this.prepareSelection(), true) }
-    this.div.focus()
-  }
-};
-ContentEditableInput.prototype.blur = function () { this.div.blur() };
-ContentEditableInput.prototype.getField = function () { return this.div };
-
-ContentEditableInput.prototype.supportsTouch = function () { return true };
-
-ContentEditableInput.prototype.receivedFocus = function () {
-  var input = this
-  if (this.selectionInEditor())
-    { this.pollSelection() }
-  else
-    { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }) }
-
-  function poll() {
-    if (input.cm.state.focused) {
-      input.pollSelection()
-      input.polling.set(input.cm.options.pollInterval, poll)
-    }
-  }
-  this.polling.set(this.cm.options.pollInterval, poll)
-};
-
-ContentEditableInput.prototype.selectionChanged = function () {
-  var sel = window.getSelection()
-  return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
-    sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
-};
-
-ContentEditableInput.prototype.pollSelection = function () {
-  if (!this.composing && this.readDOMTimeout == null && !this.gracePeriod && this.selectionChanged()) {
-    var sel = window.getSelection(), cm = this.cm
-    this.rememberSelection()
-    var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset)
-    var head = domToPos(cm, sel.focusNode, sel.focusOffset)
-    if (anchor && head) { runInOp(cm, function () {
-      setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll)
-      if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true }
-    }) }
-  }
-};
-
-ContentEditableInput.prototype.pollContent = function () {
-  if (this.readDOMTimeout != null) {
-    clearTimeout(this.readDOMTimeout)
-    this.readDOMTimeout = null
-  }
-
-  var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary()
-  var from = sel.from(), to = sel.to()
-  if (from.ch == 0 && from.line > cm.firstLine())
-    { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length) }
-  if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())
-    { to = Pos(to.line + 1, 0) }
-  if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }
-
-  var fromIndex, fromLine, fromNode
-  if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
-    fromLine = lineNo(display.view[0].line)
-    fromNode = display.view[0].node
-  } else {
-    fromLine = lineNo(display.view[fromIndex].line)
-    fromNode = display.view[fromIndex - 1].node.nextSibling
-  }
-  var toIndex = findViewIndex(cm, to.line)
-  var toLine, toNode
-  if (toIndex == display.view.length - 1) {
-    toLine = display.viewTo - 1
-    toNode = display.lineDiv.lastChild
-  } else {
-    toLine = lineNo(display.view[toIndex + 1].line) - 1
-    toNode = display.view[toIndex + 1].node.previousSibling
-  }
-
-  if (!fromNode) { return false }
-  var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine))
-  var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length))
-  while (newText.length > 1 && oldText.length > 1) {
-    if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine-- }
-    else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++ }
-    else { break }
-  }
-
-  var cutFront = 0, cutEnd = 0
-  var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length)
-  while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
-    { ++cutFront }
-  var newBot = lst(newText), oldBot = lst(oldText)
-  var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
-                           oldBot.length - (oldText.length == 1 ? cutFront : 0))
-  while (cutEnd < maxCutEnd &&
-         newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
-    { ++cutEnd }
-
-  newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "")
-  newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "")
-
-  var chFrom = Pos(fromLine, cutFront)
-  var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0)
-  if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
-    replaceRange(cm.doc, newText, chFrom, chTo, "+input")
-    return true
-  }
-};
-
-ContentEditableInput.prototype.ensurePolled = function () {
-  this.forceCompositionEnd()
-};
-ContentEditableInput.prototype.reset = function () {
-  this.forceCompositionEnd()
-};
-ContentEditableInput.prototype.forceCompositionEnd = function () {
-  if (!this.composing) { return }
-  clearTimeout(this.readDOMTimeout)
-  this.composing = null
-  if (!this.pollContent()) { regChange(this.cm) }
-  this.div.blur()
-  this.div.focus()
-};
-ContentEditableInput.prototype.readFromDOMSoon = function () {
-    var this$1 = this;
-
-  if (this.readDOMTimeout != null) { return }
-  this.readDOMTimeout = setTimeout(function () {
-    this$1.readDOMTimeout = null
-    if (this$1.composing) {
-      if (this$1.composing.done) { this$1.composing = null }
-      else { return }
-    }
-    if (this$1.cm.isReadOnly() || !this$1.pollContent())
-      { runInOp(this$1.cm, function () { return regChange(this$1.cm); }) }
-  }, 80)
-};
-
-ContentEditableInput.prototype.setUneditable = function (node) {
-  node.contentEditable = "false"
-};
-
-ContentEditableInput.prototype.onKeyPress = function (e) {
-  e.preventDefault()
-  if (!this.cm.isReadOnly())
-    { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0) }
-};
-
-ContentEditableInput.prototype.readOnlyChanged = function (val) {
-  this.div.contentEditable = String(val != "nocursor")
-};
-
-ContentEditableInput.prototype.onContextMenu = function () {};
-ContentEditableInput.prototype.resetPosition = function () {};
-
-ContentEditableInput.prototype.needsContentAttribute = true
-
-function posToDOM(cm, pos) {
-  var view = findViewForLine(cm, pos.line)
-  if (!view || view.hidden) { return null }
-  var line = getLine(cm.doc, pos.line)
-  var info = mapFromLineView(view, line, pos.line)
-
-  var order = getOrder(line), side = "left"
-  if (order) {
-    var partPos = getBidiPartAt(order, pos.ch)
-    side = partPos % 2 ? "right" : "left"
-  }
-  var result = nodeAndOffsetInLineMap(info.map, pos.ch, side)
-  result.offset = result.collapse == "right" ? result.end : result.start
-  return result
-}
-
-function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }
-
-function domTextBetween(cm, from, to, fromLine, toLine) {
-  var text = "", closing = false, lineSep = cm.doc.lineSeparator()
-  function recognizeMarker(id) { return function (marker) { return marker.id == id; } }
-  function walk(node) {
-    if (node.nodeType == 1) {
-      var cmText = node.getAttribute("cm-text")
-      if (cmText != null) {
-        if (cmText == "") { text += node.textContent.replace(/\u200b/g, "") }
-        else { text += cmText }
-        return
-      }
-      var markerID = node.getAttribute("cm-marker"), range
-      if (markerID) {
-        var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID))
-        if (found.length && (range = found[0].find()))
-          { text += getBetween(cm.doc, range.from, range.to).join(lineSep) }
-        return
-      }
-      if (node.getAttribute("contenteditable") == "false") { return }
-      for (var i = 0; i < node.childNodes.length; i++)
-        { walk(node.childNodes[i]) }
-      if (/^(pre|div|p)$/i.test(node.nodeName))
-        { closing = true }
-    } else if (node.nodeType == 3) {
-      var val = node.nodeValue
-      if (!val) { return }
-      if (closing) {
-        text += lineSep
-        closing = false
-      }
-      text += val
-    }
-  }
-  for (;;) {
-    walk(from)
-    if (from == to) { break }
-    from = from.nextSibling
-  }
-  return text
-}
-
-function domToPos(cm, node, offset) {
-  var lineNode
-  if (node == cm.display.lineDiv) {
-    lineNode = cm.display.lineDiv.childNodes[offset]
-    if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }
-    node = null; offset = 0
-  } else {
-    for (lineNode = node;; lineNode = lineNode.parentNode) {
-      if (!lineNode || lineNode == cm.display.lineDiv) { return null }
-      if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }
-    }
-  }
-  for (var i = 0; i < cm.display.view.length; i++) {
-    var lineView = cm.display.view[i]
-    if (lineView.node == lineNode)
-      { return locateNodeInLineView(lineView, node, offset) }
-  }
-}
-
-function locateNodeInLineView(lineView, node, offset) {
-  var wrapper = lineView.text.firstChild, bad = false
-  if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }
-  if (node == wrapper) {
-    bad = true
-    node = wrapper.childNodes[offset]
-    offset = 0
-    if (!node) {
-      var line = lineView.rest ? lst(lineView.rest) : lineView.line
-      return badPos(Pos(lineNo(line), line.text.length), bad)
-    }
-  }
-
-  var textNode = node.nodeType == 3 ? node : null, topNode = node
-  if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
-    textNode = node.firstChild
-    if (offset) { offset = textNode.nodeValue.length }
-  }
-  while (topNode.parentNode != wrapper) { topNode = topNode.parentNode }
-  var measure = lineView.measure, maps = measure.maps
-
-  function find(textNode, topNode, offset) {
-    for (var i = -1; i < (maps ? maps.length : 0); i++) {
-      var map = i < 0 ? measure.map : maps[i]
-      for (var j = 0; j < map.length; j += 3) {
-        var curNode = map[j + 2]
-        if (curNode == textNode || curNode == topNode) {
-          var line = lineNo(i < 0 ? lineView.line : lineView.rest[i])
-          var ch = map[j] + offset
-          if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)] }
-          return Pos(line, ch)
-        }
-      }
-    }
-  }
-  var found = find(textNode, topNode, offset)
-  if (found) { return badPos(found, bad) }
-
-  // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
-  for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
-    found = find(after, after.firstChild, 0)
-    if (found)
-      { return badPos(Pos(found.line, found.ch - dist), bad) }
-    else
-      { dist += after.textContent.length }
-  }
-  for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {
-    found = find(before, before.firstChild, -1)
-    if (found)
-      { return badPos(Pos(found.line, found.ch + dist$1), bad) }
-    else
-      { dist$1 += before.textContent.length }
-  }
-}
-
-// TEXTAREA INPUT STYLE
-
-var TextareaInput = function(cm) {
-  this.cm = cm
-  // See input.poll and input.reset
-  this.prevInput = ""
-
-  // Flag that indicates whether we expect input to appear real soon
-  // now (after some event like 'keypress' or 'input') and are
-  // polling intensively.
-  this.pollingFast = false
-  // Self-resetting timeout for the poller
-  this.polling = new Delayed()
-  // Tracks when input.reset has punted to just putting a short
-  // string into the textarea instead of the full selection.
-  this.inaccurateSelection = false
-  // Used to work around IE issue with selection being forgotten when focus moves away from textarea
-  this.hasSelection = false
-  this.composing = null
-};
-
-TextareaInput.prototype.init = function (display) {
-    var this$1 = this;
-
-  var input = this, cm = this.cm
-
-  // Wraps and hides input textarea
-  var div = this.wrapper = hiddenTextarea()
-  // The semihidden textarea that is focused when the editor is
-  // focused, and receives input.
-  var te = this.textarea = div.firstChild
-  display.wrapper.insertBefore(div, display.wrapper.firstChild)
-
-  // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
-  if (ios) { te.style.width = "0px" }
-
-  on(te, "input", function () {
-    if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null }
-    input.poll()
-  })
-
-  on(te, "paste", function (e) {
-    if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }
-
-    cm.state.pasteIncoming = true
-    input.fastPoll()
-  })
-
-  function prepareCopyCut(e) {
-    if (signalDOMEvent(cm, e)) { return }
-    if (cm.somethingSelected()) {
-      setLastCopied({lineWise: false, text: cm.getSelections()})
-      if (input.inaccurateSelection) {
-        input.prevInput = ""
-        input.inaccurateSelection = false
-        te.value = lastCopied.text.join("\n")
-        selectInput(te)
-      }
-    } else if (!cm.options.lineWiseCopyCut) {
-      return
-    } else {
-      var ranges = copyableRanges(cm)
-      setLastCopied({lineWise: true, text: ranges.text})
-      if (e.type == "cut") {
-        cm.setSelections(ranges.ranges, null, sel_dontScroll)
-      } else {
-        input.prevInput = ""
-        te.value = ranges.text.join("\n")
-        selectInput(te)
-      }
-    }
-    if (e.type == "cut") { cm.state.cutIncoming = true }
-  }
-  on(te, "cut", prepareCopyCut)
-  on(te, "copy", prepareCopyCut)
-
-  on(display.scroller, "paste", function (e) {
-    if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }
-    cm.state.pasteIncoming = true
-    input.focus()
-  })
-
-  // Prevent normal selection in the editor (we handle our own)
-  on(display.lineSpace, "selectstart", function (e) {
-    if (!eventInWidget(display, e)) { e_preventDefault(e) }
-  })
-
-  on(te, "compositionstart", function () {
-    var start = cm.getCursor("from")
-    if (input.composing) { input.composing.range.clear() }
-    input.composing = {
-      start: start,
-      range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
-    }
-  })
-  on(te, "compositionend", function () {
-    if (input.composing) {
-      input.poll()
-      input.composing.range.clear()
-      input.composing = null
-    }
-  })
-};
-
-TextareaInput.prototype.prepareSelection = function () {
-  // Redraw the selection and/or cursor
-  var cm = this.cm, display = cm.display, doc = cm.doc
-  var result = prepareSelection(cm)
-
-  // Move the hidden textarea near the cursor to prevent scrolling artifacts
-  if (cm.options.moveInputWithCursor) {
-    var headPos = cursorCoords(cm, doc.sel.primary().head, "div")
-    var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect()
-    result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
-                                        headPos.top + lineOff.top - wrapOff.top))
-    result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
-                                         headPos.left + lineOff.left - wrapOff.left))
-  }
-
-  return result
-};
-
-TextareaInput.prototype.showSelection = function (drawn) {
-  var cm = this.cm, display = cm.display
-  removeChildrenAndAdd(display.cursorDiv, drawn.cursors)
-  removeChildrenAndAdd(display.selectionDiv, drawn.selection)
-  if (drawn.teTop != null) {
-    this.wrapper.style.top = drawn.teTop + "px"
-    this.wrapper.style.left = drawn.teLeft + "px"
-  }
-};
-
-// Reset the input to correspond to the selection (or to be empty,
-// when not typing and nothing is selected)
-TextareaInput.prototype.reset = function (typing) {
-  if (this.contextMenuPending) { return }
-  var minimal, selected, cm = this.cm, doc = cm.doc
-  if (cm.somethingSelected()) {
-    this.prevInput = ""
-    var range = doc.sel.primary()
-    minimal = hasCopyEvent &&
-      (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000)
-    var content = minimal ? "-" : selected || cm.getSelection()
-    this.textarea.value = content
-    if (cm.state.focused) { selectInput(this.textarea) }
-    if (ie && ie_version >= 9) { this.hasSelection = content }
-  } else if (!typing) {
-    this.prevInput = this.textarea.value = ""
-    if (ie && ie_version >= 9) { this.hasSelection = null }
-  }
-  this.inaccurateSelection = minimal
-};
-
-TextareaInput.prototype.getField = function () { return this.textarea };
-
-TextareaInput.prototype.supportsTouch = function () { return false };
-
-TextareaInput.prototype.focus = function () {
-  if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
-    try { this.textarea.focus() }
-    catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
-  }
-};
-
-TextareaInput.prototype.blur = function () { this.textarea.blur() };
-
-TextareaInput.prototype.resetPosition = function () {
-  this.wrapper.style.top = this.wrapper.style.left = 0
-};
-
-TextareaInput.prototype.receivedFocus = function () { this.slowPoll() };
-
-// Poll for input changes, using the normal rate of polling. This
-// runs as long as the editor is focused.
-TextareaInput.prototype.slowPoll = function () {
-    var this$1 = this;
-
-  if (this.pollingFast) { return }
-  this.polling.set(this.cm.options.pollInterval, function () {
-    this$1.poll()
-    if (this$1.cm.state.focused) { this$1.slowPoll() }
-  })
-};
-
-// When an event has just come in that is likely to add or change
-// something in the input textarea, we poll faster, to ensure that
-// the change appears on the screen quickly.
-TextareaInput.prototype.fastPoll = function () {
-  var missed = false, input = this
-  input.pollingFast = true
-  function p() {
-    var changed = input.poll()
-    if (!changed && !missed) {missed = true; input.polling.set(60, p)}
-    else {input.pollingFast = false; input.slowPoll()}
-  }
-  input.polling.set(20, p)
-};
-
-// Read input from the textarea, and update the document to match.
-// When something is selected, it is present in the textarea, and
-// selected (unless it is huge, in which case a placeholder is
-// used). When nothing is selected, the cursor sits after previously
-// seen text (can be empty), which is stored in prevInput (we must
-// not reset the textarea when typing, because that breaks IME).
-TextareaInput.prototype.poll = function () {
-    var this$1 = this;
-
-  var cm = this.cm, input = this.textarea, prevInput = this.prevInput
-  // Since this is called a *lot*, try to bail out as cheaply as
-  // possible when it is clear that nothing happened. hasSelection
-  // will be the case when there is a lot of text in the textarea,
-  // in which case reading its value would be expensive.
-  if (this.contextMenuPending || !cm.state.focused ||
-      (hasSelection(input) && !prevInput && !this.composing) ||
-      cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)
-    { return false }
-
-  var text = input.value
-  // If nothing changed, bail.
-  if (text == prevInput && !cm.somethingSelected()) { return false }
-  // Work around nonsensical selection resetting in IE9/10, and
-  // inexplicable appearance of private area unicode characters on
-  // some key combos in Mac (#2689).
-  if (ie && ie_version >= 9 && this.hasSelection === text ||
-      mac && /[\uf700-\uf7ff]/.test(text)) {
-    cm.display.input.reset()
-    return false
-  }
-
-  if (cm.doc.sel == cm.display.selForContextMenu) {
-    var first = text.charCodeAt(0)
-    if (first == 0x200b && !prevInput) { prevInput = "\u200b" }
-    if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") }
-  }
-  // Find the part of the input that is actually new
-  var same = 0, l = Math.min(prevInput.length, text.length)
-  while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same }
-
-  runInOp(cm, function () {
-    applyTextInput(cm, text.slice(same), prevInput.length - same,
-                   null, this$1.composing ? "*compose" : null)
-
-    // Don't leave long text in the textarea, since it makes further polling slow
-    if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = "" }
-    else { this$1.prevInput = text }
-
-    if (this$1.composing) {
-      this$1.composing.range.clear()
-      this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"),
-                                         {className: "CodeMirror-composing"})
-    }
-  })
-  return true
-};
-
-TextareaInput.prototype.ensurePolled = function () {
-  if (this.pollingFast && this.poll()) { this.pollingFast = false }
-};
-
-TextareaInput.prototype.onKeyPress = function () {
-  if (ie && ie_version >= 9) { this.hasSelection = null }
-  this.fastPoll()
-};
-
-TextareaInput.prototype.onContextMenu = function (e) {
-  var input = this, cm = input.cm, display = cm.display, te = input.textarea
-  var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop
-  if (!pos || presto) { return } // Opera is difficult.
-
-  // Reset the current text selection only if the click is done outside of the selection
-  // and 'resetSelectionOnContextMenu' option is true.
-  var reset = cm.options.resetSelectionOnContextMenu
-  if (reset && cm.doc.sel.contains(pos) == -1)
-    { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll) }
-
-  var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText
-  input.wrapper.style.cssText = "position: absolute"
-  var wrapperBox = input.wrapper.getBoundingClientRect()
-  te.style.cssText = "position: absolute; width: 30px; height: 30px;\n      top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n      z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n      outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"
-  var oldScrollY
-  if (webkit) { oldScrollY = window.scrollY } // Work around Chrome issue (#2712)
-  display.input.focus()
-  if (webkit) { window.scrollTo(null, oldScrollY) }
-  display.input.reset()
-  // Adds "Select all" to context menu in FF
-  if (!cm.somethingSelected()) { te.value = input.prevInput = " " }
-  input.contextMenuPending = true
-  display.selForContextMenu = cm.doc.sel
-  clearTimeout(display.detectingSelectAll)
-
-  // Select-all will be greyed out if there's nothing to select, so
-  // this adds a zero-width space so that we can later check whether
-  // it got selected.
-  function prepareSelectAllHack() {
-    if (te.selectionStart != null) {
-      var selected = cm.somethingSelected()
-      var extval = "\u200b" + (selected ? te.value : "")
-      te.value = "\u21da" // Used to catch context-menu undo
-      te.value = extval
-      input.prevInput = selected ? "" : "\u200b"
-      te.selectionStart = 1; te.selectionEnd = extval.length
-      // Re-set this, in case some other handler touched the
-      // selection in the meantime.
-      display.selForContextMenu = cm.doc.sel
-    }
-  }
-  function rehide() {
-    input.contextMenuPending = false
-    input.wrapper.style.cssText = oldWrapperCSS
-    te.style.cssText = oldCSS
-    if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos) }
-
-    // Try to detect the user choosing select-all
-    if (te.selectionStart != null) {
-      if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack() }
-      var i = 0, poll = function () {
-        if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
-            te.selectionEnd > 0 && input.prevInput == "\u200b")
-          { operation(cm, selectAll)(cm) }
-        else if (i++ < 10) { display.detectingSelectAll = setTimeout(poll, 500) }
-        else { display.input.reset() }
-      }
-      display.detectingSelectAll = setTimeout(poll, 200)
-    }
-  }
-
-  if (ie && ie_version >= 9) { prepareSelectAllHack() }
-  if (captureRightClick) {
-    e_stop(e)
-    var mouseup = function () {
-      off(window, "mouseup", mouseup)
-      setTimeout(rehide, 20)
-    }
-    on(window, "mouseup", mouseup)
-  } else {
-    setTimeout(rehide, 50)
-  }
-};
-
-TextareaInput.prototype.readOnlyChanged = function (val) {
-  if (!val) { this.reset() }
-};
-
-TextareaInput.prototype.setUneditable = function () {};
-
-TextareaInput.prototype.needsContentAttribute = false
-
-function fromTextArea(textarea, options) {
-  options = options ? copyObj(options) : {}
-  options.value = textarea.value
-  if (!options.tabindex && textarea.tabIndex)
-    { options.tabindex = textarea.tabIndex }
-  if (!options.placeholder && textarea.placeholder)
-    { options.placeholder = textarea.placeholder }
-  // Set autofocus to true if this textarea is focused, or if it has
-  // autofocus and no other element is focused.
-  if (options.autofocus == null) {
-    var hasFocus = activeElt()
-    options.autofocus = hasFocus == textarea ||
-      textarea.getAttribute("autofocus") != null && hasFocus == document.body
-  }
-
-  function save() {textarea.value = cm.getValue()}
-
-  var realSubmit
-  if (textarea.form) {
-    on(textarea.form, "submit", save)
-    // Deplorable hack to make the submit method do the right thing.
-    if (!options.leaveSubmitMethodAlone) {
-      var form = textarea.form
-      realSubmit = form.submit
-      try {
-        var wrappedSubmit = form.submit = function () {
-          save()
-          form.submit = realSubmit
-          form.submit()
-          form.submit = wrappedSubmit
-        }
-      } catch(e) {}
-    }
-  }
-
-  options.finishInit = function (cm) {
-    cm.save = save
-    cm.getTextArea = function () { return textarea; }
-    cm.toTextArea = function () {
-      cm.toTextArea = isNaN // Prevent this from being ran twice
-      save()
-      textarea.parentNode.removeChild(cm.getWrapperElement())
-      textarea.style.display = ""
-      if (textarea.form) {
-        off(textarea.form, "submit", save)
-        if (typeof textarea.form.submit == "function")
-          { textarea.form.submit = realSubmit }
-      }
-    }
-  }
-
-  textarea.style.display = "none"
-  var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },
-    options)
-  return cm
-}
-
-function addLegacyProps(CodeMirror) {
-  CodeMirror.off = off
-  CodeMirror.on = on
-  CodeMirror.wheelEventPixels = wheelEventPixels
-  CodeMirror.Doc = Doc
-  CodeMirror.splitLines = splitLinesAuto
-  CodeMirror.countColumn = countColumn
-  CodeMirror.findColumn = findColumn
-  CodeMirror.isWordChar = isWordCharBasic
-  CodeMirror.Pass = Pass
-  CodeMirror.signal = signal
-  CodeMirror.Line = Line
-  CodeMirror.changeEnd = changeEnd
-  CodeMirror.scrollbarModel = scrollbarModel
-  CodeMirror.Pos = Pos
-  CodeMirror.cmpPos = cmp
-  CodeMirror.modes = modes
-  CodeMirror.mimeModes = mimeModes
-  CodeMirror.resolveMode = resolveMode
-  CodeMirror.getMode = getMode
-  CodeMirror.modeExtensions = modeExtensions
-  CodeMirror.extendMode = extendMode
-  CodeMirror.copyState = copyState
-  CodeMirror.startState = startState
-  CodeMirror.innerMode = innerMode
-  CodeMirror.commands = commands
-  CodeMirror.keyMap = keyMap
-  CodeMirror.keyName = keyName
-  CodeMirror.isModifierKey = isModifierKey
-  CodeMirror.lookupKey = lookupKey
-  CodeMirror.normalizeKeyMap = normalizeKeyMap
-  CodeMirror.StringStream = StringStream
-  CodeMirror.SharedTextMarker = SharedTextMarker
-  CodeMirror.TextMarker = TextMarker
-  CodeMirror.LineWidget = LineWidget
-  CodeMirror.e_preventDefault = e_preventDefault
-  CodeMirror.e_stopPropagation = e_stopPropagation
-  CodeMirror.e_stop = e_stop
-  CodeMirror.addClass = addClass
-  CodeMirror.contains = contains
-  CodeMirror.rmClass = rmClass
-  CodeMirror.keyNames = keyNames
-}
-
-// EDITOR CONSTRUCTOR
-
-defineOptions(CodeMirror)
-
-addEditorMethods(CodeMirror)
-
-// Set up methods on CodeMirror's prototype to redirect to the editor's document.
-var dontDelegate = "iter insert remove copy getEditor constructor".split(" ")
-for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
-  { CodeMirror.prototype[prop] = (function(method) {
-    return function() {return method.apply(this.doc, arguments)}
-  })(Doc.prototype[prop]) } }
-
-eventMixin(Doc)
-
-// INPUT HANDLING
-
-CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput}
-
-// MODE DEFINITION AND QUERYING
-
-// Extra arguments are stored as the mode's dependencies, which is
-// used by (legacy) mechanisms like loadmode.js to automatically
-// load a mode. (Preferred mechanism is the require/define calls.)
-CodeMirror.defineMode = function(name/*, mode, …*/) {
-  if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name }
-  defineMode.apply(this, arguments)
-}
-
-CodeMirror.defineMIME = defineMIME
-
-// Minimal default mode.
-CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); })
-CodeMirror.defineMIME("text/plain", "null")
-
-// EXTENSIONS
-
-CodeMirror.defineExtension = function (name, func) {
-  CodeMirror.prototype[name] = func
-}
-CodeMirror.defineDocExtension = function (name, func) {
-  Doc.prototype[name] = func
-}
-
-CodeMirror.fromTextArea = fromTextArea
-
-addLegacyProps(CodeMirror)
-
-CodeMirror.version = "5.23.0"
-
-return CodeMirror;
-
-})));

src/public/lib/CodeMirror/mode/javascript/javascript.js

@@ -1,797 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-function expressionAllowed(stream, state, backUp) {
-  return /^(?:operator|sof|keyword c|case|new|export|default|[\[{}\(,;:]|=>)$/.test(state.lastType) ||
-    (state.lastType == "quasi" && /\{\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0))))
-}
-
-CodeMirror.defineMode("javascript", function(config, parserConfig) {
-  var indentUnit = config.indentUnit;
-  var statementIndent = parserConfig.statementIndent;
-  var jsonldMode = parserConfig.jsonld;
-  var jsonMode = parserConfig.json || jsonldMode;
-  var isTS = parserConfig.typescript;
-  var wordRE = parserConfig.wordCharacters || /[\w$\xa1-\uffff]/;
-
-  // Tokenizer
-
-  var keywords = function(){
-    function kw(type) {return {type: type, style: "keyword"};}
-    var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c");
-    var operator = kw("operator"), atom = {type: "atom", style: "atom"};
-
-    var jsKeywords = {
-      "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,
-      "return": C, "break": C, "continue": C, "new": kw("new"), "delete": C, "throw": C, "debugger": C,
-      "var": kw("var"), "const": kw("var"), "let": kw("var"),
-      "function": kw("function"), "catch": kw("catch"),
-      "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),
-      "in": operator, "typeof": operator, "instanceof": operator,
-      "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom,
-      "this": kw("this"), "class": kw("class"), "super": kw("atom"),
-      "yield": C, "export": kw("export"), "import": kw("import"), "extends": C,
-      "await": C, "async": kw("async")
-    };
-
-    // Extend the 'normal' keywords with the TypeScript language extensions
-    if (isTS) {
-      var type = {type: "variable", style: "variable-3"};
-      var tsKeywords = {
-        // object-like things
-        "interface": kw("class"),
-        "implements": C,
-        "namespace": C,
-        "module": kw("module"),
-        "enum": kw("module"),
-        "type": kw("type"),
-
-        // scope modifiers
-        "public": kw("modifier"),
-        "private": kw("modifier"),
-        "protected": kw("modifier"),
-        "abstract": kw("modifier"),
-
-        // operators
-        "as": operator,
-
-        // types
-        "string": type, "number": type, "boolean": type, "any": type
-      };
-
-      for (var attr in tsKeywords) {
-        jsKeywords[attr] = tsKeywords[attr];
-      }
-    }
-
-    return jsKeywords;
-  }();
-
-  var isOperatorChar = /[+\-*&%=<>!?|~^]/;
-  var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)"/;
-
-  function readRegexp(stream) {
-    var escaped = false, next, inSet = false;
-    while ((next = stream.next()) != null) {
-      if (!escaped) {
-        if (next == "/" && !inSet) return;
-        if (next == "[") inSet = true;
-        else if (inSet && next == "]") inSet = false;
-      }
-      escaped = !escaped && next == "\\";
-    }
-  }
-
-  // Used as scratch variables to communicate multiple values without
-  // consing up tons of objects.
-  var type, content;
-  function ret(tp, style, cont) {
-    type = tp; content = cont;
-    return style;
-  }
-  function tokenBase(stream, state) {
-    var ch = stream.next();
-    if (ch == '"' || ch == "'") {
-      state.tokenize = tokenString(ch);
-      return state.tokenize(stream, state);
-    } else if (ch == "." && stream.match(/^\d+(?:[eE][+\-]?\d+)?/)) {
-      return ret("number", "number");
-    } else if (ch == "." && stream.match("..")) {
-      return ret("spread", "meta");
-    } else if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
-      return ret(ch);
-    } else if (ch == "=" && stream.eat(">")) {
-      return ret("=>", "operator");
-    } else if (ch == "0" && stream.eat(/x/i)) {
-      stream.eatWhile(/[\da-f]/i);
-      return ret("number", "number");
-    } else if (ch == "0" && stream.eat(/o/i)) {
-      stream.eatWhile(/[0-7]/i);
-      return ret("number", "number");
-    } else if (ch == "0" && stream.eat(/b/i)) {
-      stream.eatWhile(/[01]/i);
-      return ret("number", "number");
-    } else if (/\d/.test(ch)) {
-      stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/);
-      return ret("number", "number");
-    } else if (ch == "/") {
-      if (stream.eat("*")) {
-        state.tokenize = tokenComment;
-        return tokenComment(stream, state);
-      } else if (stream.eat("/")) {
-        stream.skipToEnd();
-        return ret("comment", "comment");
-      } else if (expressionAllowed(stream, state, 1)) {
-        readRegexp(stream);
-        stream.match(/^\b(([gimyu])(?![gimyu]*\2))+\b/);
-        return ret("regexp", "string-2");
-      } else {
-        stream.eatWhile(isOperatorChar);
-        return ret("operator", "operator", stream.current());
-      }
-    } else if (ch == "`") {
-      state.tokenize = tokenQuasi;
-      return tokenQuasi(stream, state);
-    } else if (ch == "#") {
-      stream.skipToEnd();
-      return ret("error", "error");
-    } else if (isOperatorChar.test(ch)) {
-      if (ch != ">" || !state.lexical || state.lexical.type != ">")
-        stream.eatWhile(isOperatorChar);
-      return ret("operator", "operator", stream.current());
-    } else if (wordRE.test(ch)) {
-      stream.eatWhile(wordRE);
-      var word = stream.current(), known = keywords.propertyIsEnumerable(word) && keywords[word];
-      return (known && state.lastType != ".") ? ret(known.type, known.style, word) :
-                     ret("variable", "variable", word);
-    }
-  }
-
-  function tokenString(quote) {
-    return function(stream, state) {
-      var escaped = false, next;
-      if (jsonldMode && stream.peek() == "@" && stream.match(isJsonldKeyword)){
-        state.tokenize = tokenBase;
-        return ret("jsonld-keyword", "meta");
-      }
-      while ((next = stream.next()) != null) {
-        if (next == quote && !escaped) break;
-        escaped = !escaped && next == "\\";
-      }
-      if (!escaped) state.tokenize = tokenBase;
-      return ret("string", "string");
-    };
-  }
-
-  function tokenComment(stream, state) {
-    var maybeEnd = false, ch;
-    while (ch = stream.next()) {
-      if (ch == "/" && maybeEnd) {
-        state.tokenize = tokenBase;
-        break;
-      }
-      maybeEnd = (ch == "*");
-    }
-    return ret("comment", "comment");
-  }
-
-  function tokenQuasi(stream, state) {
-    var escaped = false, next;
-    while ((next = stream.next()) != null) {
-      if (!escaped && (next == "`" || next == "$" && stream.eat("{"))) {
-        state.tokenize = tokenBase;
-        break;
-      }
-      escaped = !escaped && next == "\\";
-    }
-    return ret("quasi", "string-2", stream.current());
-  }
-
-  var brackets = "([{}])";
-  // This is a crude lookahead trick to try and notice that we're
-  // parsing the argument patterns for a fat-arrow function before we
-  // actually hit the arrow token. It only works if the arrow is on
-  // the same line as the arguments and there's no strange noise
-  // (comments) in between. Fallback is to only notice when we hit the
-  // arrow, and not declare the arguments as locals for the arrow
-  // body.
-  function findFatArrow(stream, state) {
-    if (state.fatArrowAt) state.fatArrowAt = null;
-    var arrow = stream.string.indexOf("=>", stream.start);
-    if (arrow < 0) return;
-
-    if (isTS) { // Try to skip TypeScript return type declarations after the arguments
-      var m = /:\s*(?:\w+(?:<[^>]*>|\[\])?|\{[^}]*\})\s*$/.exec(stream.string.slice(stream.start, arrow))
-      if (m) arrow = m.index
-    }
-
-    var depth = 0, sawSomething = false;
-    for (var pos = arrow - 1; pos >= 0; --pos) {
-      var ch = stream.string.charAt(pos);
-      var bracket = brackets.indexOf(ch);
-      if (bracket >= 0 && bracket < 3) {
-        if (!depth) { ++pos; break; }
-        if (--depth == 0) { if (ch == "(") sawSomething = true; break; }
-      } else if (bracket >= 3 && bracket < 6) {
-        ++depth;
-      } else if (wordRE.test(ch)) {
-        sawSomething = true;
-      } else if (/["'\/]/.test(ch)) {
-        return;
-      } else if (sawSomething && !depth) {
-        ++pos;
-        break;
-      }
-    }
-    if (sawSomething && !depth) state.fatArrowAt = pos;
-  }
-
-  // Parser
-
-  var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true, "jsonld-keyword": true};
-
-  function JSLexical(indented, column, type, align, prev, info) {
-    this.indented = indented;
-    this.column = column;
-    this.type = type;
-    this.prev = prev;
-    this.info = info;
-    if (align != null) this.align = align;
-  }
-
-  function inScope(state, varname) {
-    for (var v = state.localVars; v; v = v.next)
-      if (v.name == varname) return true;
-    for (var cx = state.context; cx; cx = cx.prev) {
-      for (var v = cx.vars; v; v = v.next)
-        if (v.name == varname) return true;
-    }
-  }
-
-  function parseJS(state, style, type, content, stream) {
-    var cc = state.cc;
-    // Communicate our context to the combinators.
-    // (Less wasteful than consing up a hundred closures on every call.)
-    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style;
-
-    if (!state.lexical.hasOwnProperty("align"))
-      state.lexical.align = true;
-
-    while(true) {
-      var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;
-      if (combinator(type, content)) {
-        while(cc.length && cc[cc.length - 1].lex)
-          cc.pop()();
-        if (cx.marked) return cx.marked;
-        if (type == "variable" && inScope(state, content)) return "variable-2";
-        return style;
-      }
-    }
-  }
-
-  // Combinator utils
-
-  var cx = {state: null, column: null, marked: null, cc: null};
-  function pass() {
-    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
-  }
-  function cont() {
-    pass.apply(null, arguments);
-    return true;
-  }
-  function register(varname) {
-    function inList(list) {
-      for (var v = list; v; v = v.next)
-        if (v.name == varname) return true;
-      return false;
-    }
-    var state = cx.state;
-    cx.marked = "def";
-    if (state.context) {
-      if (inList(state.localVars)) return;
-      state.localVars = {name: varname, next: state.localVars};
-    } else {
-      if (inList(state.globalVars)) return;
-      if (parserConfig.globalVars)
-        state.globalVars = {name: varname, next: state.globalVars};
-    }
-  }
-
-  // Combinators
-
-  var defaultVars = {name: "this", next: {name: "arguments"}};
-  function pushcontext() {
-    cx.state.context = {prev: cx.state.context, vars: cx.state.localVars};
-    cx.state.localVars = defaultVars;
-  }
-  function popcontext() {
-    cx.state.localVars = cx.state.context.vars;
-    cx.state.context = cx.state.context.prev;
-  }
-  function pushlex(type, info) {
-    var result = function() {
-      var state = cx.state, indent = state.indented;
-      if (state.lexical.type == "stat") indent = state.lexical.indented;
-      else for (var outer = state.lexical; outer && outer.type == ")" && outer.align; outer = outer.prev)
-        indent = outer.indented;
-      state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info);
-    };
-    result.lex = true;
-    return result;
-  }
-  function poplex() {
-    var state = cx.state;
-    if (state.lexical.prev) {
-      if (state.lexical.type == ")")
-        state.indented = state.lexical.indented;
-      state.lexical = state.lexical.prev;
-    }
-  }
-  poplex.lex = true;
-
-  function expect(wanted) {
-    function exp(type) {
-      if (type == wanted) return cont();
-      else if (wanted == ";") return pass();
-      else return cont(exp);
-    };
-    return exp;
-  }
-
-  function statement(type, value) {
-    if (type == "var") return cont(pushlex("vardef", value.length), vardef, expect(";"), poplex);
-    if (type == "keyword a") return cont(pushlex("form"), parenExpr, statement, poplex);
-    if (type == "keyword b") return cont(pushlex("form"), statement, poplex);
-    if (type == "{") return cont(pushlex("}"), block, poplex);
-    if (type == ";") return cont();
-    if (type == "if") {
-      if (cx.state.lexical.info == "else" && cx.state.cc[cx.state.cc.length - 1] == poplex)
-        cx.state.cc.pop()();
-      return cont(pushlex("form"), parenExpr, statement, poplex, maybeelse);
-    }
-    if (type == "function") return cont(functiondef);
-    if (type == "for") return cont(pushlex("form"), forspec, statement, poplex);
-    if (type == "variable") return cont(pushlex("stat"), maybelabel);
-    if (type == "switch") return cont(pushlex("form"), parenExpr, pushlex("}", "switch"), expect("{"),
-                                      block, poplex, poplex);
-    if (type == "case") return cont(expression, expect(":"));
-    if (type == "default") return cont(expect(":"));
-    if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"),
-                                     statement, poplex, popcontext);
-    if (type == "class") return cont(pushlex("form"), className, poplex);
-    if (type == "export") return cont(pushlex("stat"), afterExport, poplex);
-    if (type == "import") return cont(pushlex("stat"), afterImport, poplex);
-    if (type == "module") return cont(pushlex("form"), pattern, pushlex("}"), expect("{"), block, poplex, poplex)
-    if (type == "type") return cont(typeexpr, expect("operator"), typeexpr, expect(";"));
-    if (type == "async") return cont(statement)
-    return pass(pushlex("stat"), expression, expect(";"), poplex);
-  }
-  function expression(type) {
-    return expressionInner(type, false);
-  }
-  function expressionNoComma(type) {
-    return expressionInner(type, true);
-  }
-  function parenExpr(type) {
-    if (type != "(") return pass()
-    return cont(pushlex(")"), expression, expect(")"), poplex)
-  }
-  function expressionInner(type, noComma) {
-    if (cx.state.fatArrowAt == cx.stream.start) {
-      var body = noComma ? arrowBodyNoComma : arrowBody;
-      if (type == "(") return cont(pushcontext, pushlex(")"), commasep(pattern, ")"), poplex, expect("=>"), body, popcontext);
-      else if (type == "variable") return pass(pushcontext, pattern, expect("=>"), body, popcontext);
-    }
-
-    var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;
-    if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);
-    if (type == "function") return cont(functiondef, maybeop);
-    if (type == "class") return cont(pushlex("form"), classExpression, poplex);
-    if (type == "keyword c" || type == "async") return cont(noComma ? maybeexpressionNoComma : maybeexpression);
-    if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);
-    if (type == "operator" || type == "spread") return cont(noComma ? expressionNoComma : expression);
-    if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop);
-    if (type == "{") return contCommasep(objprop, "}", null, maybeop);
-    if (type == "quasi") return pass(quasi, maybeop);
-    if (type == "new") return cont(maybeTarget(noComma));
-    return cont();
-  }
-  function maybeexpression(type) {
-    if (type.match(/[;\}\)\],]/)) return pass();
-    return pass(expression);
-  }
-  function maybeexpressionNoComma(type) {
-    if (type.match(/[;\}\)\],]/)) return pass();
-    return pass(expressionNoComma);
-  }
-
-  function maybeoperatorComma(type, value) {
-    if (type == ",") return cont(expression);
-    return maybeoperatorNoComma(type, value, false);
-  }
-  function maybeoperatorNoComma(type, value, noComma) {
-    var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma;
-    var expr = noComma == false ? expression : expressionNoComma;
-    if (type == "=>") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext);
-    if (type == "operator") {
-      if (/\+\+|--/.test(value)) return cont(me);
-      if (value == "?") return cont(expression, expect(":"), expr);
-      return cont(expr);
-    }
-    if (type == "quasi") { return pass(quasi, me); }
-    if (type == ";") return;
-    if (type == "(") return contCommasep(expressionNoComma, ")", "call", me);
-    if (type == ".") return cont(property, me);
-    if (type == "[") return cont(pushlex("]"), maybeexpression, expect("]"), poplex, me);
-  }
-  function quasi(type, value) {
-    if (type != "quasi") return pass();
-    if (value.slice(value.length - 2) != "${") return cont(quasi);
-    return cont(expression, continueQuasi);
-  }
-  function continueQuasi(type) {
-    if (type == "}") {
-      cx.marked = "string-2";
-      cx.state.tokenize = tokenQuasi;
-      return cont(quasi);
-    }
-  }
-  function arrowBody(type) {
-    findFatArrow(cx.stream, cx.state);
-    return pass(type == "{" ? statement : expression);
-  }
-  function arrowBodyNoComma(type) {
-    findFatArrow(cx.stream, cx.state);
-    return pass(type == "{" ? statement : expressionNoComma);
-  }
-  function maybeTarget(noComma) {
-    return function(type) {
-      if (type == ".") return cont(noComma ? targetNoComma : target);
-      else return pass(noComma ? expressionNoComma : expression);
-    };
-  }
-  function target(_, value) {
-    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorComma); }
-  }
-  function targetNoComma(_, value) {
-    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorNoComma); }
-  }
-  function maybelabel(type) {
-    if (type == ":") return cont(poplex, statement);
-    return pass(maybeoperatorComma, expect(";"), poplex);
-  }
-  function property(type) {
-    if (type == "variable") {cx.marked = "property"; return cont();}
-  }
-  function objprop(type, value) {
-    if (type == "async") {
-      cx.marked = "property";
-      return cont(objprop);
-    } else if (type == "variable" || cx.style == "keyword") {
-      cx.marked = "property";
-      if (value == "get" || value == "set") return cont(getterSetter);
-      return cont(afterprop);
-    } else if (type == "number" || type == "string") {
-      cx.marked = jsonldMode ? "property" : (cx.style + " property");
-      return cont(afterprop);
-    } else if (type == "jsonld-keyword") {
-      return cont(afterprop);
-    } else if (type == "modifier") {
-      return cont(objprop)
-    } else if (type == "[") {
-      return cont(expression, expect("]"), afterprop);
-    } else if (type == "spread") {
-      return cont(expression);
-    } else if (type == ":") {
-      return pass(afterprop)
-    }
-  }
-  function getterSetter(type) {
-    if (type != "variable") return pass(afterprop);
-    cx.marked = "property";
-    return cont(functiondef);
-  }
-  function afterprop(type) {
-    if (type == ":") return cont(expressionNoComma);
-    if (type == "(") return pass(functiondef);
-  }
-  function commasep(what, end, sep) {
-    function proceed(type, value) {
-      if (sep ? sep.indexOf(type) > -1 : type == ",") {
-        var lex = cx.state.lexical;
-        if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;
-        return cont(function(type, value) {
-          if (type == end || value == end) return pass()
-          return pass(what)
-        }, proceed);
-      }
-      if (type == end || value == end) return cont();
-      return cont(expect(end));
-    }
-    return function(type, value) {
-      if (type == end || value == end) return cont();
-      return pass(what, proceed);
-    };
-  }
-  function contCommasep(what, end, info) {
-    for (var i = 3; i < arguments.length; i++)
-      cx.cc.push(arguments[i]);
-    return cont(pushlex(end, info), commasep(what, end), poplex);
-  }
-  function block(type) {
-    if (type == "}") return cont();
-    return pass(statement, block);
-  }
-  function maybetype(type, value) {
-    if (isTS) {
-      if (type == ":") return cont(typeexpr);
-      if (value == "?") return cont(maybetype);
-    }
-  }
-  function typeexpr(type) {
-    if (type == "variable") {cx.marked = "variable-3"; return cont(afterType);}
-    if (type == "string" || type == "number" || type == "atom") return cont(afterType);
-    if (type == "{") return cont(pushlex("}"), commasep(typeprop, "}", ",;"), poplex)
-    if (type == "(") return cont(commasep(typearg, ")"), maybeReturnType)
-  }
-  function maybeReturnType(type) {
-    if (type == "=>") return cont(typeexpr)
-  }
-  function typeprop(type, value) {
-    if (type == "variable" || cx.style == "keyword") {
-      cx.marked = "property"
-      return cont(typeprop)
-    } else if (value == "?") {
-      return cont(typeprop)
-    } else if (type == ":") {
-      return cont(typeexpr)
-    }
-  }
-  function typearg(type) {
-    if (type == "variable") return cont(typearg)
-    else if (type == ":") return cont(typeexpr)
-  }
-  function afterType(type, value) {
-    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)
-    if (value == "|" || type == ".") return cont(typeexpr)
-    if (type == "[") return cont(expect("]"), afterType)
-  }
-  function vardef() {
-    return pass(pattern, maybetype, maybeAssign, vardefCont);
-  }
-  function pattern(type, value) {
-    if (type == "modifier") return cont(pattern)
-    if (type == "variable") { register(value); return cont(); }
-    if (type == "spread") return cont(pattern);
-    if (type == "[") return contCommasep(pattern, "]");
-    if (type == "{") return contCommasep(proppattern, "}");
-  }
-  function proppattern(type, value) {
-    if (type == "variable" && !cx.stream.match(/^\s*:/, false)) {
-      register(value);
-      return cont(maybeAssign);
-    }
-    if (type == "variable") cx.marked = "property";
-    if (type == "spread") return cont(pattern);
-    if (type == "}") return pass();
-    return cont(expect(":"), pattern, maybeAssign);
-  }
-  function maybeAssign(_type, value) {
-    if (value == "=") return cont(expressionNoComma);
-  }
-  function vardefCont(type) {
-    if (type == ",") return cont(vardef);
-  }
-  function maybeelse(type, value) {
-    if (type == "keyword b" && value == "else") return cont(pushlex("form", "else"), statement, poplex);
-  }
-  function forspec(type) {
-    if (type == "(") return cont(pushlex(")"), forspec1, expect(")"), poplex);
-  }
-  function forspec1(type) {
-    if (type == "var") return cont(vardef, expect(";"), forspec2);
-    if (type == ";") return cont(forspec2);
-    if (type == "variable") return cont(formaybeinof);
-    return pass(expression, expect(";"), forspec2);
-  }
-  function formaybeinof(_type, value) {
-    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); }
-    return cont(maybeoperatorComma, forspec2);
-  }
-  function forspec2(type, value) {
-    if (type == ";") return cont(forspec3);
-    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); }
-    return pass(expression, expect(";"), forspec3);
-  }
-  function forspec3(type) {
-    if (type != ")") cont(expression);
-  }
-  function functiondef(type, value) {
-    if (value == "*") {cx.marked = "keyword"; return cont(functiondef);}
-    if (type == "variable") {register(value); return cont(functiondef);}
-    if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, maybetype, statement, popcontext);
-  }
-  function funarg(type) {
-    if (type == "spread") return cont(funarg);
-    return pass(pattern, maybetype, maybeAssign);
-  }
-  function classExpression(type, value) {
-    // Class expressions may have an optional name.
-    if (type == "variable") return className(type, value);
-    return classNameAfter(type, value);
-  }
-  function className(type, value) {
-    if (type == "variable") {register(value); return cont(classNameAfter);}
-  }
-  function classNameAfter(type, value) {
-    if (value == "extends" || value == "implements") return cont(isTS ? typeexpr : expression, classNameAfter);
-    if (type == "{") return cont(pushlex("}"), classBody, poplex);
-  }
-  function classBody(type, value) {
-    if (type == "variable" || cx.style == "keyword") {
-      if ((value == "static" || value == "get" || value == "set" ||
-           (isTS && (value == "public" || value == "private" || value == "protected" || value == "readonly" || value == "abstract"))) &&
-          cx.stream.match(/^\s+[\w$\xa1-\uffff]/, false)) {
-        cx.marked = "keyword";
-        return cont(classBody);
-      }
-      cx.marked = "property";
-      return cont(isTS ? classfield : functiondef, classBody);
-    }
-    if (value == "*") {
-      cx.marked = "keyword";
-      return cont(classBody);
-    }
-    if (type == ";") return cont(classBody);
-    if (type == "}") return cont();
-  }
-  function classfield(type, value) {
-    if (value == "?") return cont(classfield)
-    if (type == ":") return cont(typeexpr, maybeAssign)
-    return pass(functiondef)
-  }
-  function afterExport(type, value) {
-    if (value == "*") { cx.marked = "keyword"; return cont(maybeFrom, expect(";")); }
-    if (value == "default") { cx.marked = "keyword"; return cont(expression, expect(";")); }
-    if (type == "{") return cont(commasep(exportField, "}"), maybeFrom, expect(";"));
-    return pass(statement);
-  }
-  function exportField(type, value) {
-    if (value == "as") { cx.marked = "keyword"; return cont(expect("variable")); }
-    if (type == "variable") return pass(expressionNoComma, exportField);
-  }
-  function afterImport(type) {
-    if (type == "string") return cont();
-    return pass(importSpec, maybeMoreImports, maybeFrom);
-  }
-  function importSpec(type, value) {
-    if (type == "{") return contCommasep(importSpec, "}");
-    if (type == "variable") register(value);
-    if (value == "*") cx.marked = "keyword";
-    return cont(maybeAs);
-  }
-  function maybeMoreImports(type) {
-    if (type == ",") return cont(importSpec, maybeMoreImports)
-  }
-  function maybeAs(_type, value) {
-    if (value == "as") { cx.marked = "keyword"; return cont(importSpec); }
-  }
-  function maybeFrom(_type, value) {
-    if (value == "from") { cx.marked = "keyword"; return cont(expression); }
-  }
-  function arrayLiteral(type) {
-    if (type == "]") return cont();
-    return pass(commasep(expressionNoComma, "]"));
-  }
-
-  function isContinuedStatement(state, textAfter) {
-    return state.lastType == "operator" || state.lastType == "," ||
-      isOperatorChar.test(textAfter.charAt(0)) ||
-      /[,.]/.test(textAfter.charAt(0));
-  }
-
-  // Interface
-
-  return {
-    startState: function(basecolumn) {
-      var state = {
-        tokenize: tokenBase,
-        lastType: "sof",
-        cc: [],
-        lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
-        localVars: parserConfig.localVars,
-        context: parserConfig.localVars && {vars: parserConfig.localVars},
-        indented: basecolumn || 0
-      };
-      if (parserConfig.globalVars && typeof parserConfig.globalVars == "object")
-        state.globalVars = parserConfig.globalVars;
-      return state;
-    },
-
-    token: function(stream, state) {
-      if (stream.sol()) {
-        if (!state.lexical.hasOwnProperty("align"))
-          state.lexical.align = false;
-        state.indented = stream.indentation();
-        findFatArrow(stream, state);
-      }
-      if (state.tokenize != tokenComment && stream.eatSpace()) return null;
-      var style = state.tokenize(stream, state);
-      if (type == "comment") return style;
-      state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type;
-      return parseJS(state, style, type, content, stream);
-    },
-
-    indent: function(state, textAfter) {
-      if (state.tokenize == tokenComment) return CodeMirror.Pass;
-      if (state.tokenize != tokenBase) return 0;
-      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top
-      // Kludge to prevent 'maybelse' from blocking lexical scope pops
-      if (!/^\s*else\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) {
-        var c = state.cc[i];
-        if (c == poplex) lexical = lexical.prev;
-        else if (c != maybeelse) break;
-      }
-      while ((lexical.type == "stat" || lexical.type == "form") &&
-             (firstChar == "}" || ((top = state.cc[state.cc.length - 1]) &&
-                                   (top == maybeoperatorComma || top == maybeoperatorNoComma) &&
-                                   !/^[,\.=+\-*:?[\(]/.test(textAfter))))
-        lexical = lexical.prev;
-      if (statementIndent && lexical.type == ")" && lexical.prev.type == "stat")
-        lexical = lexical.prev;
-      var type = lexical.type, closing = firstChar == type;
-
-      if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? lexical.info + 1 : 0);
-      else if (type == "form" && firstChar == "{") return lexical.indented;
-      else if (type == "form") return lexical.indented + indentUnit;
-      else if (type == "stat")
-        return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);
-      else if (lexical.info == "switch" && !closing && parserConfig.doubleIndentSwitch != false)
-        return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
-      else if (lexical.align) return lexical.column + (closing ? 0 : 1);
-      else return lexical.indented + (closing ? 0 : indentUnit);
-    },
-
-    electricInput: /^\s*(?:case .*?:|default:|\{|\})$/,
-    blockCommentStart: jsonMode ? null : "/*",
-    blockCommentEnd: jsonMode ? null : "*/",
-    lineComment: jsonMode ? null : "//",
-    fold: "brace",
-    closeBrackets: "()[]{}''\"\"``",
-
-    helperType: jsonMode ? "json" : "javascript",
-    jsonldMode: jsonldMode,
-    jsonMode: jsonMode,
-
-    expressionAllowed: expressionAllowed,
-    skipExpression: function(state) {
-      var top = state.cc[state.cc.length - 1]
-      if (top == expression || top == expressionNoComma) state.cc.pop()
-    }
-  };
-});
-
-CodeMirror.registerHelper("wordChars", "javascript", /[\w$]/);
-
-CodeMirror.defineMIME("text/javascript", "javascript");
-CodeMirror.defineMIME("text/ecmascript", "javascript");
-CodeMirror.defineMIME("application/javascript", "javascript");
-CodeMirror.defineMIME("application/x-javascript", "javascript");
-CodeMirror.defineMIME("application/ecmascript", "javascript");
-CodeMirror.defineMIME("application/json", {name: "javascript", json: true});
-CodeMirror.defineMIME("application/x-json", {name: "javascript", json: true});
-CodeMirror.defineMIME("application/ld+json", {name: "javascript", jsonld: true});
-CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true });
-CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });
-
-});

src/public/lib/CodeMirror/theme/eclipse.css

@@ -1,23 +0,0 @@
-.cm-s-eclipse span.cm-meta { color: #FF1717; }
-.cm-s-eclipse span.cm-keyword { line-height: 1em; font-weight: bold; color: #7F0055; }
-.cm-s-eclipse span.cm-atom { color: #219; }
-.cm-s-eclipse span.cm-number { color: #164; }
-.cm-s-eclipse span.cm-def { color: #00f; }
-.cm-s-eclipse span.cm-variable { color: black; }
-.cm-s-eclipse span.cm-variable-2 { color: #0000C0; }
-.cm-s-eclipse span.cm-variable-3 { color: #0000C0; }
-.cm-s-eclipse span.cm-property { color: black; }
-.cm-s-eclipse span.cm-operator { color: black; }
-.cm-s-eclipse span.cm-comment { color: #3F7F5F; }
-.cm-s-eclipse span.cm-string { color: #2A00FF; }
-.cm-s-eclipse span.cm-string-2 { color: #f50; }
-.cm-s-eclipse span.cm-qualifier { color: #555; }
-.cm-s-eclipse span.cm-builtin { color: #30a; }
-.cm-s-eclipse span.cm-bracket { color: #cc7; }
-.cm-s-eclipse span.cm-tag { color: #170; }
-.cm-s-eclipse span.cm-attribute { color: #00c; }
-.cm-s-eclipse span.cm-link { color: #219; }
-.cm-s-eclipse span.cm-error { color: #f00; }
-
-.cm-s-eclipse .CodeMirror-activeline-background { background: #e8f2ff; }
-.cm-s-eclipse .CodeMirror-matchingbracket { outline:1px solid grey; color:black !important; }

src/public/lib/define.js

@@ -1,37 +0,0 @@
-!function (root) {
-  function define(name, factory) {
-    var module = modules[name];
-    if (module) {
-      throw 'Module is already defined: ' + name;
-    }
-    module = modules[name] = {
-      name: name,
-      factory: factory,
-      data: {
-        exports: {},
-      },
-      initialized: false,
-    };
-  }
-
-  function require(name) {
-    var module = modules[name];
-    if (!module) {
-      throw 'Module not found: ' + name;
-    }
-    if (!module.initialized) {
-      module.initialized = true;
-      module.factory(require, module.data.exports, module.data);
-    }
-    return module.data.exports;
-  }
-
-  function use(names) {
-    if (!Array.isArray(names)) names = [names];
-    names.forEach(require);
-  }
-
-  var modules = {};
-  root.define = define;
-  define.use = use;
-}(this);