# HG changeset patch
# User blanchet
# Date 1347654191 -7200
# Node ID 94e9583ea25d6baa556ab37e13450baaaf2b9bd7
# Parent  be09db8426cb04d3c5b707935393796b9b19baee
moved blast tactic to where it is actually needed

diff -r be09db8426cb -r 94e9583ea25d src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML
--- a/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Fri Sep 14 22:23:11 2012 +0200
+++ b/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Fri Sep 14 22:23:11 2012 +0200
@@ -118,18 +118,18 @@
     REPEAT_DETERM_N qq o
       (SELECT_GOAL (Local_Defs.unfold_tac ctxt @{thms Union_iff bex_simps(6)}) THEN'
        etac @{thm induct_set_step}) THEN'
-    (atac ORELSE' blast_tac ctxt);
+    atac;
 
-(* TODO: Get rid of the "blast_tac" *)
+(* TODO: Get rid of the "blast_tac" (or at least use a naked context) *)
 fun mk_induct_discharge_prem_prems_tac ctxt nn ixs set_natural's pre_set_defs =
   EVERY' (maps (fn ((pp, jj), (qq, kk)) =>
-    [rotate_tac (~ nn), select_prem_tac nn (dtac meta_spec) kk, rotate_tac ~1,(*###*) etac meta_mp,
-     SELECT_GOAL (Local_Defs.unfold_tac ctxt pre_set_defs), (* ### why on a line of its own? *)
-     SELECT_GOAL (Local_Defs.unfold_tac ctxt (set_natural's @ induct_prem_prem_thms)),
-     SELECT_GOAL (Local_Defs.unfold_tac ctxt
-       (induct_prem_prem_thms_delayed @ induct_prem_prem_thms)),
-     rtac (mk_UnIN pp jj),
-     mk_induct_prem_prem_endgame_tac ctxt qq]) (rev ixs)) 1;
+      [rotate_tac (~ nn), select_prem_tac nn (dtac meta_spec) kk, rotate_tac ~1,(*###*) etac meta_mp,
+       SELECT_GOAL (Local_Defs.unfold_tac ctxt pre_set_defs), (* ### why on a line of its own? *)
+       SELECT_GOAL (Local_Defs.unfold_tac ctxt (set_natural's @ induct_prem_prem_thms)),
+       SELECT_GOAL (Local_Defs.unfold_tac ctxt
+         (induct_prem_prem_thms_delayed @ induct_prem_prem_thms)),
+       rtac (mk_UnIN pp jj) THEN' mk_induct_prem_prem_endgame_tac ctxt qq ORELSE' blast_tac ctxt])
+    (rev ixs)) 1;
 
 fun mk_induct_discharge_prem_tac ctxt nn n set_natural's pre_set_defs m k ixs =
   EVERY [mk_induct_prepare_prem_tac n m k,