^CMake Error at defer_call_syntax_error.cmake:2 \(message\):
  Syntax error in cmake code at

    [^
]*/Tests/RunCMake/cmake_language/defer_call_syntax_error.cmake:2

  when parsing string

    Deferred \\X Error

  Invalid character escape '\\X'.
Call Stack \(most recent call first\):
  CMakeLists.txt:DEFERRED$