message: Fix double back slash in string regexp
diff: @@ -131,7 +131,7 @@ async function getClangVersion(binPath: string): Promise<ClangVersion|null> {
  }
  const lines = exec.stderr.split('\n');
  const versionWord: string = localize("version.word", "version");
  - const version_re_str: string = `^(?:Apple LLVM|.*clang) ${versionWord} ([^\s-]+)(?:[\s-]|$)`;
  + const version_re_str: string = `^(?:Apple LLVM|.*clang) ${versionWord} ([^\\s-]+)(?:[\\s-]|$)`;
  const version_re = RegExp(version_re_str, "mgi");
  let version: string = "";
  let fullVersion: string = "";
  