diff -r c86a47d4966e -r 2d9de77d5687 Quot/QuotMain.thy
--- a/Quot/QuotMain.thy	Wed Dec 09 05:59:49 2009 +0100
+++ b/Quot/QuotMain.thy	Wed Dec 09 06:21:09 2009 +0100
@@ -1063,10 +1063,7 @@
     fun simps thms = (mk_minimal_ss lthy) addsimps thms addSolver quotient_solver
   in
     EVERY' [simp_tac (simps thms1),
-            fun_map_tac lthy,
-            fun_map_tac lthy,
-            fun_map_tac lthy,
-            fun_map_tac lthy,
+            TRY o REPEAT_ALL_NEW (CHANGED o (fun_map_tac lthy)),
             lambda_prs_tac lthy,
             simp_tac (simps thms2),
             TRY o rtac refl]