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src/HOL/Tools/Function/function_context_tree.ML
changeset 60695 757549b4bbe6
parent 59621 291934bac95e
child 60781 2da59cdf531c 
--- a/src/HOL/Tools/Function/function_context_tree.ML	Wed Jul 08 15:37:32 2015 +0200
+++ b/src/HOL/Tools/Function/function_context_tree.ML	Wed Jul 08 19:28:43 2015 +0200
@@ -103,7 +103,7 @@
 (* Called on the INSTANTIATED branches of the congruence rule *)
 fun mk_branch ctxt t =
   let
-    val ((params, impl), ctxt') = Variable.focus t ctxt
+    val ((params, impl), ctxt') = Variable.focus NONE t ctxt
     val (assms, concl) = Logic.strip_horn impl
   in
     (ctxt', map #2 params, assms, rhs_of concl)
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