INVALID_CODE_FF   111 ext/mbstring/oniguruma/enc/utf8.c       return ((c == 0xfe) ? INVALID_CODE_FE : INVALID_CODE_FF);
INVALID_CODE_FF   133 ext/mbstring/oniguruma/enc/utf8.c   else if (code == INVALID_CODE_FF) return 1;
INVALID_CODE_FF   206 ext/mbstring/oniguruma/enc/utf8.c     else if (code == INVALID_CODE_FF) {