libc/regex/engine.c

106 static const char *backref(struct match *m, const char *start, const char *stop, sopno startst, sopno stopst, sopno lev, int);
554  ==	const char *stop, sopno startst, sopno stopst, sopno lev);
562 	sopno lev,		/* PLUS nesting level */
685 		return(backref(m, sp+len, stop, ss+1, stopst, lev, rec));
687 		dp = backref(m, sp, stop, ss+1, stopst, lev, rec);
690 		return(backref(m, sp, stop, ss+OPND(s)+1, stopst, lev, rec));
693 		assert(lev+1 <= m->g->nplus);
694 		m->lastpos[lev+1] = sp;
695 		return(backref(m, sp, stop, ss+1, stopst, lev+1, rec));
697 		if (sp == m->lastpos[lev])	/* last pass matched null */
698 			return(backref(m, sp, stop, ss+1, stopst, lev-1, rec));
700 		m->lastpos[lev] = sp;
701 		dp = backref(m, sp, stop, ss-OPND(s)+1, stopst, lev, rec);
703 			return(backref(m, sp, stop, ss+1, stopst, lev-1, rec));
711 			dp = backref(m, sp, stop, ssub, esub, lev, rec);
733 		dp = backref(m, sp, stop, ss+1, stopst, lev, rec);
743 		dp = backref(m, sp, stop, ss+1, stopst, lev, rec);