X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Flambda-delta%2Fbasic_rg%2FbrgSubstitution.ml;h=5c9d91a8bdd14009ffb14b0c256ffe2dc480c95b;hb=2b1375e4b44e2ef351a6341a5bb0a4823e8daae5;hp=40859b2d5e54f75a97eb1a31f179f8e8bbc7e908;hpb=a22628e5de37d3ffe9de056d7683f2ebdf7226fb;p=helm.git

diff --git a/helm/software/lambda-delta/basic_rg/brgSubstitution.ml b/helm/software/lambda-delta/basic_rg/brgSubstitution.ml
index 40859b2d5..5c9d91a8b 100644
--- a/helm/software/lambda-delta/basic_rg/brgSubstitution.ml
+++ b/helm/software/lambda-delta/basic_rg/brgSubstitution.ml
@@ -10,6 +10,17 @@
       V_______________________________________________________________ *)
 
 module B = Brg
+(* module O = Output *)
+
+let rec icm a = function
+   | B.Sort _
+   | B.LRef _
+   | B.GRef _                -> succ a
+   | B.Bind (_, B.Void, t)   -> icm (succ a) t
+   | B.Cast (_, u, t)        -> icm (icm a u) t
+   | B.Appl (_, u, t)
+   | B.Bind (_, B.Abst u, t)
+   | B.Bind (_, B.Abbr u, t) -> icm (icm (succ a) u) t
 
 let iter map d =
    let rec iter_bind d = function
@@ -30,4 +41,6 @@ let lift_map h _ a i =
    if i + h >= 0 then B.LRef (a, i + h) else assert false
 
 let lift h d t =
-   if h = 0 then t else iter (lift_map h) d t
+   if h = 0 then t else begin
+(*      O.icm := succ (* icm *) !O.icm (*t*); *) iter (lift_map h) d t
+   end