Tests/RunCMake/execute_process/MergeOutput.cmake - third_party/github.com/Kitware/CMake - Git at Google

 foreach(i RANGE 1 5)
   message(STATUS "Output on stdout")
   message("Output on stderr")
 endforeach()
	foreach(i RANGE 1 5)
	message(STATUS "Output on stdout")
	message("Output on stderr")
	endforeach()