205 				drop(disc, e->re.group.expr.rex);  in drop()
251 				mark(e->re.group.expr.rex, set);  in mark()
289 			n = serialize(env, e->re.group.expr.rex, n);  in serialize()
471 			if (stats(env, e->re.group.expr.rex))  in stats()
482 			if (stats(env, e->re.group.expr.rex))  in stats()
527 			if (stats(env, e->re.group.expr.rex))  in stats()
543 			if (stats(env, e->re.group.expr.rex))  in stats()
566 			if (stats(env, e->re.group.expr.rex))  in stats()
1786 		f->re.group.expr.rex = e;  in rep()
1857 	f->re.group.expr.rex = e;  in rep()
1864 		for (; e && e->type >= REX_GROUP && e->type <= REX_GROUP_CUT; e = e->re.group.expr.rex);  in rep()
2345 				f->re.group.expr.rex = e;  in grp()
2507 	f->re.group.expr.rex = e;  in grp()
2702 				f->re.group.expr.rex = e;  in seq()
2721 					f->re.group.expr.rex = e;  in seq()
2974 	if (e = p->env->rex)  in special()
3020 			a->re.bm.back = (y == e || y == e->re.group.expr.rex) ? (m - n) : -1;  in special()
3023 … (env->stats.e || y != e && (e->type != REX_GROUP || y != e->re.group.expr.rex) || e->next || ((a-…  in special()
3119 			p->env->rex = a;  in special()
3131 			e = e->re.group.expr.rex;  in special()
3167 			p->env->rex = a;  in special()
3277 	if (!(p->env->rex = alt(&env, 1, 0)))  in regcomp()
3287 		if (p->env->rex->type != REX_BEG)  in regcomp()
3289 			if (p->env->rex->type == REX_ALT)  in regcomp()
3296 			e->next = p->env->rex;  in regcomp()
3297 			p->env->rex = e;  in regcomp()
3302 	for (e = p->env->rex; e->next; e = e->next);  in regcomp()
3309 			if (p->env->rex->type == REX_ALT)  in regcomp()
3322 	if (stats(&env, p->env->rex))  in regcomp()
3343 	serialize(&env, p->env->rex, 1);  in regcomp()
3410 	Rex_t*	e = p->env->rex;  in regcomb()
3411 	Rex_t*	f = q->env->rex;  in regcomb()
3424 		p->env->rex = e->next;  in regcomb()
3427 		e = p->env->rex;  in regcomb()
3431 		q->env->rex = f->next;  in regcomb()
3434 		f = q->env->rex;  in regcomb()
3439 		p->env->rex = e->next;  in regcomb()
3442 		e = p->env->rex;  in regcomb()
3443 		q->env->rex = f->next;  in regcomb()
3446 		f = q->env->rex;  in regcomb()
3460 	p->env->rex = g;  in regcomb()
3463 	q->env->rex = 0;  in regcomb()
3471 		e->next = p->env->rex;  in regcomb()
3472 		p->env->rex = e;  in regcomb()
3477 		for (f = p->env->rex; f->next; f = f->next);  in regcomb()
3491 	if (stats(&env, p->env->rex))  in regcomb()