Bug fixed: analysing inductive type that contains implicit used to

duplicate the metas in the metasenv since the term was disambiguated
twice, in the analyze and in the tactic that uses the analyze.

diff --git a/matita/components/ng_tactics/nTactics.ml b/matita/components/ng_tactics/nTactics.ml
index 331945819395f95db65665d46236b6b1629abb0f..15e77f0940417eb6c5368e99798434706c12ea15 100644 (file)
--- a/matita/components/ng_tactics/nTactics.ml
+++ b/matita/components/ng_tactics/nTactics.ml
@@ -476,6 +476,7 @@ type indtyinfo = {
         lefts: NCic.term list;
         rights: NCic.term list;
         reference: NReference.reference;
+        term: NCic.term
  }
 ;;
 
@@ -489,9 +490,10 @@ let analyze_indty_tac ~what indtyref =
   let status, (r,consno,lefts,rights) = analyse_indty status ty_what in
   let leftno = List.length lefts in
   let rightno = List.length rights in
+  let status,what = term_of_cic_term status what (ctx_of goalty) in
   indtyref := Some { 
     rightno = rightno; leftno = leftno; consno = consno;
-    lefts = lefts; rights = rights; reference = r;
+    lefts = lefts; rights = rights; reference = r; term = what
   };
   exec id_tac status goal)
 ;;
@@ -523,8 +525,8 @@ let elim_tac ~what:(txt,len,what) ~where =
           (match !sort with NCic.Sort x -> x | _ -> assert false))
      in
      let eliminator = 
-       let _,_,w = what in
-       Ast.Appl [ Ast.Ident (name,None) ; Ast.Implicit `Vector ; w ]
+       let what = (HExtlib.unopt !indtyinfo).term in
+       Ast.Appl [ Ast.Ident (name,None) ; Ast.Implicit `Vector ; Ast.NCic what ]
      in
      exact_tac ("",0,eliminator) status) ]) 
 ;;
@@ -594,9 +596,13 @@ let cases_tac ~what:(txt,len,what) ~where =
   atomic_tac 
    (block_tac [
       analyze_indty_tac ~what indtyinfo;
-      (fun s -> select_tac 
-       ~where ~job:(`Substexpand ((HExtlib.unopt !indtyinfo).rightno+1))true s);
-      distribute_tac (cases ~what) ])
+      (fun s ->
+        select_tac 
+         ~where ~job:(`Substexpand ((HExtlib.unopt !indtyinfo).rightno+1))true
+         s);
+      (fun s ->
+        distribute_tac
+         (cases ~what:("",0,Ast.NCic (HExtlib.unopt !indtyinfo).term)) s); ])
 ;;
 
 let case1_tac name =
@@ -689,8 +695,8 @@ let inversion_tac ~what:(txt,len,what) ~where =
           (match !sort with NCic.Sort x -> x | _ -> assert false))
      in
      let eliminator = 
-       let _,_,w = what in
-       Ast.Appl [ Ast.Ident (name,None) ; Ast.Implicit `Vector ; w ]
+       let what = (HExtlib.unopt !indtyinfo).term in
+       Ast.Appl [ Ast.Ident (name,None) ; Ast.Implicit `Vector ; Ast.NCic what ]
      in
      exact_tac ("",0,eliminator) status) ]) 
 ;;