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src/Tools/induct_tacs.ML
changeset 32863 5e8cef567042
parent 30541 9f168bdc468a
child 33368 b1cf34f1855c 
--- a/src/Tools/induct_tacs.ML	Fri Oct 02 22:15:30 2009 +0200
+++ b/src/Tools/induct_tacs.ML	Fri Oct 02 23:15:36 2009 +0200
@@ -28,7 +28,7 @@
 
 fun gen_case_tac ctxt0 s opt_rule i st =
   let
-    val ((_, goal), ctxt) = Variable.focus_subgoal i st ctxt0;
+    val (_, ctxt) = Variable.focus_subgoal i st ctxt0;
     val rule =
       (case opt_rule of
         SOME rule => rule
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