REG_EPAREN         53 ext/ereg/regex/regex.h #define	REG_EPAREN	 8
REG_EPAREN         53 ext/mbstring/oniguruma/onigposix.h #define REG_EPAREN           8
REG_EPAREN         85 ext/pcre/pcrelib/pcreposix.h REG_EPAREN,      /* unbalanced () */