Modestas Vainius authored Feb 27, 2012 and Brad King committed Feb 27, 2012

${CMake_SOURCE_DIR} and ${CMake_BINARY_DIR} cannot be embedded into regex
directly. If they contain special regex metacharacters like +, the regex
will break. So just escape such metacharacters with a backslash before
embedding the path into the regex.

The issue affected the following tests: CTestTestConfigFileInBuildDir1 and
CTestTestConfigFileInBuildDir2.