ONIG_OPTIMIZE_NONE 5421 regcomp.c        reg->optimize      = ONIG_OPTIMIZE_NONE;
ONIG_OPTIMIZE_NONE 4291 regexec.c          if (reg->optimize != ONIG_OPTIMIZE_NONE) {
ONIG_OPTIMIZE_NONE 4359 regexec.c          if (reg->optimize != ONIG_OPTIMIZE_NONE) {