BUG: Use copy to produce doc1pre.txt instead of echo. The redirection does not like forward slashes on Win9x.

Tests/CustomCommand/CMakeLists.txt

@@ -90,7 +90,7 @@ ADD_CUSTOM_TARGET(TDocument ALL
 ADD_CUSTOM_COMMAND(
   TARGET TDocument PRE_BUILD
   COMMAND ${CMAKE_COMMAND} -E echo " Writing doc1pre.txt."
-  COMMAND ${CMAKE_COMMAND} -E echo "Dummy" > ${PROJECT_BINARY_DIR}/doc1pre.txt
+  COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_SOURCE_DIR}/doc1.tex ${PROJECT_BINARY_DIR}/doc1pre.txt
   )
 ADD_CUSTOM_COMMAND(
   TARGET TDocument POST_BUILD