--- a/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML Wed Sep 05 11:08:18 2012 +0200
+++ b/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML Wed Sep 05 11:08:18 2012 +0200
@@ -30,8 +30,9 @@
fun mk_exhaust_tac ctxt n ms ctr_defs fld_iff_unf sumEN' =
Local_Defs.unfold_tac ctxt (fld_iff_unf :: ctr_defs) THEN rtac sumEN' 1 THEN
Local_Defs.unfold_tac ctxt @{thms all_prod_eq} THEN
- EVERY' (map2 (fn k => fn m => select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN'
- etac @{thm meta_mp}) k THEN' atac) (1 upto n) ms) 1;
+ EVERY' (map2 (fn k => fn m =>
+ select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN' rotate_tac ~1 THEN'
+ etac @{thm meta_mp}) k THEN' atac) (1 upto n) ms) 1;
fun mk_fld_iff_unf_tac ctxt cTs cfld cunf fld_unf unf_fld =
(rtac iffI THEN'