ONIG_OPTIMIZE_MAP 5341 regcomp.c        reg->optimize   = ONIG_OPTIMIZE_MAP;
ONIG_OPTIMIZE_MAP 5562 regcomp.c        else if (reg->optimize & ONIG_OPTIMIZE_MAP) {
ONIG_OPTIMIZE_MAP 3862 regexec.c        case ONIG_OPTIMIZE_MAP:
ONIG_OPTIMIZE_MAP 3987 regexec.c        case ONIG_OPTIMIZE_MAP: