ONIG_OPTIMIZE_EXACT_IC 4893 ext/mbstring/oniguruma/regcomp.c reg->optimize = ONIG_OPTIMIZE_EXACT_IC; ONIG_OPTIMIZE_EXACT_IC 3140 ext/mbstring/oniguruma/regexec.c case ONIG_OPTIMIZE_EXACT_IC: ONIG_OPTIMIZE_EXACT_IC 3263 ext/mbstring/oniguruma/regexec.c case ONIG_OPTIMIZE_EXACT_IC: