X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_kernel%2FnCicUntrusted.ml;h=4dcf01c53b1a43f2793cf29ca374e456cbdba62c;hb=ffdd3ddd6ce10a5fa0729ab407647bd46c44b9d8;hp=d7635fe8860ef409efa5534aa255d3ba263562dc;hpb=62f476a05884d451bfb90d845ea2b1c0a1c77f96;p=helm.git

diff --git a/helm/software/components/ng_kernel/nCicUntrusted.ml b/helm/software/components/ng_kernel/nCicUntrusted.ml
index d7635fe88..4dcf01c53 100644
--- a/helm/software/components/ng_kernel/nCicUntrusted.ml
+++ b/helm/software/components/ng_kernel/nCicUntrusted.ml
@@ -22,15 +22,23 @@ let map_term_fold_a g k f a = function
  | C.Rel _ as t -> a,t
  | C.Appl [] | C.Appl [_] -> assert false
  | C.Appl l as orig ->
+    let fire_beta, upto = 
+      match l with C.Meta _ :: _ -> true, List.length l - 1 | _ -> false, 0 
+    in
     let a,l1 = 
       (* sharing fold? *)
       List.fold_right 
         (fun t (a,l) -> let a,t = f k a t in a, t :: l) 
         l (a,[])
     in
-    a, if l1 == l then orig else (match l1 with
-       | C.Appl l :: tl -> C.Appl (l@tl)
-       | _ -> C.Appl l1)
+    a, if l1 == l then orig else 
+       let t =
+        match l1 with
+         | C.Appl l :: tl -> C.Appl (l@tl)
+         | _ -> C.Appl l1
+       in
+        if fire_beta then NCicReduction.head_beta_reduce ~upto t
+        else t
  | C.Prod (n,s,t) as orig ->
      let a,s1 = f k a s in let a,t1 = f (g (n,C.Decl s) k) a t in
      a, if t1 == t && s1 == s then orig else C.Prod (n,s1,t1)