OptExactInfo 3969 ext/mbstring/oniguruma/regcomp.c OptExactInfo exb; /* boundary */ OptExactInfo 3970 ext/mbstring/oniguruma/regcomp.c OptExactInfo exm; /* middle */ OptExactInfo 3971 ext/mbstring/oniguruma/regcomp.c OptExactInfo expr; /* prec read (?=...) */