ONIG_OPTIMIZE_EXACT 4708 mbstring/oniguruma/regcomp.c       reg->optimize = ONIG_OPTIMIZE_EXACT;
ONIG_OPTIMIZE_EXACT 3321 mbstring/oniguruma/regexec.c   case ONIG_OPTIMIZE_EXACT:
ONIG_OPTIMIZE_EXACT 3439 mbstring/oniguruma/regexec.c   case ONIG_OPTIMIZE_EXACT: