Tests/RunCMake/Syntax/BracketComment3.cmake - third_party/github.com/Kitware/CMake - Git at Google

 #[[Text on opening line
 message(FATAL_ERROR "This is commented out.")
 #]=]]
 message(STATUS "The above FATAL_ERROR did not occur.")
	#[[Text on opening line
	message(FATAL_ERROR "This is commented out.")
	#]=]]
	message(STATUS "The above FATAL_ERROR did not occur.")