# HG changeset patch
# User Cezary Kaliszyk <kaliszyk@in.tum.de>
# Date 1265630669 -3600
# Node ID ab5789ad8d7d8cd557892e5d7758591d58729b43
# Parent  cf53861a00a7ab3f2b06192c1d83f0ca3d411261# Parent  40e3e6a6076f53dad0efc82197c77d12eb12f4dd
merge

diff -r cf53861a00a7 -r ab5789ad8d7d Quot/quotient_tacs.ML
--- a/Quot/quotient_tacs.ML	Mon Feb 08 13:04:13 2010 +0100
+++ b/Quot/quotient_tacs.ML	Mon Feb 08 13:04:29 2010 +0100
@@ -654,10 +654,9 @@
   val ctxt = Context.proof_of context
   val ((_, [thm']), ctxt') = Variable.import false [thm] ctxt
   val goal = (quotient_lift_all ctxt' o prop_of) thm'
-  val nthm = Goal.prove ctxt' [] [] goal (fn x => lift_tac ctxt' [thm] 1)
-  val [nthm1] = ProofContext.export ctxt' ctxt [nthm]
 in
-  nthm1
+  Goal.prove ctxt' [] [] goal (K (lift_tac ctxt' [thm] 1))
+  |> singleton (ProofContext.export ctxt' ctxt)
 end;
 
 val lifted_attrib = Thm.rule_attribute lifted_attrib_aux