X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Fcomponents%2Facic_procedural%2FproceduralTypes.ml;h=6534b872538b0912e4e1d8ce75fa72a2a434a604;hb=e48189183ea3a03caae6f9c292ee82d776d60f92;hp=5e1bc3a24add64ceb4fe31766a8f5d5c828c0611;hpb=3b8d99d5fdb79a5d979a8e200a4a4307fe362009;p=helm.git

diff --git a/helm/software/components/acic_procedural/proceduralTypes.ml b/helm/software/components/acic_procedural/proceduralTypes.ml
index 5e1bc3a24..6534b8725 100644
--- a/helm/software/components/acic_procedural/proceduralTypes.ml
+++ b/helm/software/components/acic_procedural/proceduralTypes.ml
@@ -134,8 +134,9 @@ let mk_letin name what punctation =
 let mk_rewrite direction what where pattern punctation =
    let direction = if direction then `RightToLeft else `LeftToRight in 
    let pattern, rename = match where with
-      | None                 -> (None, [], Some pattern), []
-      | Some (premise, name) -> (None, [premise, pattern], None), [name] 
+      | None                      -> (None, [], Some pattern), []
+      | Some (premise, Some name) -> (None, [premise, pattern], None), [Some name]
+      | Some (premise, None)      -> (None, [premise, pattern], None), [] 
    in
    let tactic = G.Rewrite (floc, direction, what, pattern, rename) in
    mk_tactic tactic punctation