+ HExtlib.mk_list false lno @ relevance
+ | _ -> relevance
+ in
+ (try
+ HExtlib.list_forall_default3_var
+ (fun t1 t2 b -> not b || aux true context t1 t2 )
+ tl1 tl2 true relevance
+ with Invalid_argument _ -> false
+ | HExtlib.FailureAt fail ->
+ let relevance =
+ !get_relevance ~metasenv ~subst context hd1 tl1 in
+ let _,relevance = HExtlib.split_nth fail relevance in
+ let b,relevance = (match relevance with
+ | [] -> assert false
+ | b::tl -> b,tl) in
+ if (not b) then
+ let _,tl1 = HExtlib.split_nth (fail+1) tl1 in
+ let _,tl2 = HExtlib.split_nth (fail+1) tl2 in
+ try
+ HExtlib.list_forall_default3
+ (fun t1 t2 b -> not b || aux true context t1 t2)
+ tl1 tl2 true relevance
+ with Invalid_argument _ -> false
+ else false)
+
+ | (C.Appl (hd1::tl1), C.Appl (hd2::tl2)) ->
+ aux test_eq_only context hd1 hd2 &&
+ let relevance = !get_relevance ~metasenv ~subst context hd1 tl1 in
+ (try