Function needsEscape

extras/catch_amalgamated.cpp:4684–4687

    namespace {
        static bool needsEscape( char c ) {
            return c == '"' || c == '\\' || c == '\b' || c == '\f' ||
                   c == '\n' || c == '\r' || c == '\t';
        }

        static Catch::StringRef makeEscapeStringRef( char c ) {
            if ( c == '"' ) {