subst does not replace anymore in branches of maches

It was unnecessary: a match cannot expand to a previous branch

diff --git a/ocaml/num.ml b/ocaml/num.ml
index c88a101312b3b4d1a0db272d11081bc05be1d228..4e44c79731ec475477082a9418791329fb6a2176 100644 (file)
--- a/ocaml/num.ml
+++ b/ocaml/num.ml
@@ -250,11 +250,11 @@ and subst truelam delift_by_one what (with_what : nf(*_nob*)) (where : nf) =
    | `N _ as x -> x
    | `Match(t,v,bs_lift,bs,args) ->
        let bs_lift = bs_lift + if delift_by_one then -1 else 0 in
-       let l' = l - bs_lift  in
-       let with_what' = lift l' (with_what :> nf) in
+       (* let l' = l - bs_lift  in *)
+       (* let with_what' = lift l' (with_what :> nf) in *)
        (* The following line should be the identity when delift_by_one = true because we
           are assuming the ts to not contain lambda-bound variables. *)
-       bs := List.map (fun (n,t) -> n,subst truelam false what with_what' t) !bs ;
+       (* bs := List.map (fun (n,t) -> n,subst truelam false what with_what' t) !bs ; *)
        let body = aux_i_num_var l t in
        mk_match body v bs_lift bs (List.map (aux l) (args :> nf list))
  and aux l(*lift*) =