255 static BOOL first_lit(Positionset *fpos, Expr *e);
257 static void efollow(re_re *r, Positionset *fpos, Expr *e);
258 static void follow(Positionset *fpos, Expr *e);
259 static void followstate(re_re *r, State *s, int a, Positionset *fpos);
551 follow(Positionset *fpos, Expr *e)  in follow()  argument
561 		SET(fpos, p->id, 0)  in follow()
565 		(void) first_lit(fpos, e);  in follow()
566 		follow(fpos, p);  in follow()
570 		follow(fpos, p);  in follow()
573 		if (e == p->r || !first_lit(fpos, p->r))  in follow()
574 			follow(fpos, p);  in follow()
586 first_lit(Positionset *fpos, Expr *e)  in first_lit()  argument
594 		SET(fpos, e->id, 0)  in first_lit()
599 		(void) first_lit(fpos, e->l);  in first_lit()
602 		return (first_lit(fpos, e->l));  in first_lit()
604 		return ((BOOL)(first_lit(fpos, e->l) || first_lit(fpos, e->r)));  in first_lit()
606 		k = first_lit(fpos, e->r);  in first_lit()
607 		return ((BOOL)(first_lit(fpos, e->l) && k));  in first_lit()
615 efollow(re_re *r, Positionset *fpos, Expr *e)  in efollow()  argument
619 	CLEAR(r, fpos);  in efollow()
620 	follow(fpos, e);  in efollow()
621 	e->flen = fpos->count;  in efollow()
627 	for (i = fpos->last; i > 0; i = fpos->base[i].id) {  in efollow()
707 followstate(re_re *r, State *s, int a, Positionset *fpos)  in followstate()  argument
719 				SET(fpos, *q, r->posbase[j].fcount + 1)  in followstate()