ONIG_OPTIMIZE_EXACT 4915 ext/mbstring/oniguruma/regcomp.c       reg->optimize = ONIG_OPTIMIZE_EXACT;
ONIG_OPTIMIZE_EXACT 3137 ext/mbstring/oniguruma/regexec.c   case ONIG_OPTIMIZE_EXACT:
ONIG_OPTIMIZE_EXACT 3257 ext/mbstring/oniguruma/regexec.c   case ONIG_OPTIMIZE_EXACT: