bitset_is_empty   572 ext/mbstring/oniguruma/regcomp.c     if (ONIGENC_MBC_MINLEN(reg->enc) > 1 || bitset_is_empty(cc->bs)) {
bitset_is_empty   608 ext/mbstring/oniguruma/regcomp.c     if (ONIGENC_MBC_MINLEN(reg->enc) > 1 || bitset_is_empty(cc->bs)) {