366     list_T	*l2,  in list_equal()  argument
372     if (l1 == l2)  in list_equal()
374     if (list_len(l1) != list_len(l2))  in list_equal()
379     if (l1 == NULL || l2 == NULL)  in list_equal()
383     CHECK_LIST_MATERIALIZE(l2);  in list_equal()
385     for (item1 = l1->lv_first, item2 = l2->lv_first;  in list_equal()
1071 list_extend(list_T *l1, list_T *l2, listitem_T *bef)  in list_extend()  argument
1078     if (l2 == NULL || l2->lv_len == 0)  in list_extend()
1081     todo = l2->lv_len;  in list_extend()
1083     CHECK_LIST_MATERIALIZE(l2);  in list_extend()
1092     for (item = l2->lv_first; item != NULL && --todo >= 0;  in list_extend()
1104 list_concat(list_T *l1, list_T *l2, typval_T *tv)  in list_concat()  argument
1122     return list_extend(l, l2, NULL);  in list_concat()
2834 	list_T		*l1, *l2;  in extend()  local
2845 	l2 = argvars[1].vval.v_list;  in extend()
2847 								 && l2 != NULL)  in extend()
2879 	    list_extend(l1, l2, item);  in extend()