removed no longer used METAs

[helm.git] / helm / ocaml / tactics / proofEngineReduction.ml

diff --git a/helm/ocaml/tactics/proofEngineReduction.ml b/helm/ocaml/tactics/proofEngineReduction.ml
index cc5af63ae3558aaa7feb7697d59f3b67b386be84..0dc4ce4ee3e617a1b1cb6a98efa6dc68db8e922b 100644 (file)
--- a/helm/ocaml/tactics/proofEngineReduction.ml
+++ b/helm/ocaml/tactics/proofEngineReduction.ml
@@ -603,14 +603,8 @@ let simpl context =
   let module S = CicSubstitution in
    function
       C.Rel n as t ->
-       (try
-         match List.nth context (n-1) with
-            Some (_,C.Decl _) -> if l = [] then t else C.Appl (t::l)
-          | Some (_,C.Def (bo,_)) ->
-             try_delta_expansion context l t (S.lift n bo)
-         | None -> raise RelToHiddenHypothesis
-        with
-         Failure _ -> assert false)
+       (* we never perform delta expansion automatically *)
+       if l = [] then t else C.Appl (t::l)
     | C.Var (uri,exp_named_subst) ->
        let exp_named_subst' =
         reduceaux_exp_named_subst context l exp_named_subst
@@ -631,7 +625,7 @@ let simpl context =
     | C.Sort _ as t -> t (* l should be empty *)
     | C.Implicit _ as t -> t
     | C.Cast (te,ty) ->
-       C.Cast (reduceaux context l te, reduceaux context l ty)
+       C.Cast (reduceaux context l te, reduceaux context [] ty)
     | C.Prod (name,s,t) ->
        assert (l = []) ;
        C.Prod (name,