Function HasGoogleTestFlagPrefix

test/common/gtest/gtest.cpp:6683–6690

Determines whether a string has a prefix that Google Test uses for its flags, i.e., starts with GTEST_FLAG_PREFIX_ or GTEST_FLAG_PREFIX_DASH_. If Google Test detects that a command line flag has its prefix but is not recognized, it will print its help message. Flags starting with GTEST_INTERNAL_PREFIX_ followed by "internal_" are considered Google Test internal flags and do not trigger the help me

// GTEST_INTERNAL_PREFIX_ followed by "internal_" are considered Google Test
// internal flags and do not trigger the help message.
static bool HasGoogleTestFlagPrefix(const char* str) {
  return (SkipPrefix("--", &str) ||
          SkipPrefix("-", &str) ||
          SkipPrefix("/", &str)) &&
         !SkipPrefix(GTEST_FLAG_PREFIX_ "internal_", &str) &&
         (SkipPrefix(GTEST_FLAG_PREFIX_, &str) ||
          SkipPrefix(GTEST_FLAG_PREFIX_DASH_, &str));
}

// Prints a string containing code-encoded text.  The following escape
// sequences can be used in the string to control the text color: