backref            13 ext/ereg/regex/engine.c #define	backref	sbackref
backref            24 ext/ereg/regex/engine.c #define	backref	lbackref
backref           420 ext/ereg/regex/engine.c backref(m, start, stop, startst, stopst, lev)
backref          1015 ext/ereg/regex/engine.c #undef	backref