1.1 --- a/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Wed Sep 05 11:08:18 2012 +0200
     1.2 +++ b/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Wed Sep 05 11:08:18 2012 +0200
     1.3 @@ -30,8 +30,9 @@
     1.4  fun mk_exhaust_tac ctxt n ms ctr_defs fld_iff_unf sumEN' =
     1.5    Local_Defs.unfold_tac ctxt (fld_iff_unf :: ctr_defs) THEN rtac sumEN' 1 THEN
     1.6    Local_Defs.unfold_tac ctxt @{thms all_prod_eq} THEN
     1.7 -  EVERY' (map2 (fn k => fn m => select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN'
     1.8 -    etac @{thm meta_mp}) k THEN' atac) (1 upto n) ms) 1;
     1.9 +  EVERY' (map2 (fn k => fn m =>
    1.10 +    select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN' rotate_tac ~1 THEN'
    1.11 +      etac @{thm meta_mp}) k THEN' atac) (1 upto n) ms) 1;
    1.12  
    1.13  fun mk_fld_iff_unf_tac ctxt cTs cfld cunf fld_unf unf_fld =
    1.14    (rtac iffI THEN'