1.1 --- a/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Tue Sep 04 23:09:08 2012 +0200
     1.2 +++ b/src/HOL/Codatatype/Tools/bnf_fp_sugar_tactics.ML	Tue Sep 04 23:42:33 2012 +0200
     1.3 @@ -28,12 +28,10 @@
     1.4     rtac refl) 1;
     1.5  
     1.6  fun mk_exhaust_tac ctxt n ms ctr_defs fld_iff_unf sumEN' =
     1.7 -  Local_Defs.unfold_tac ctxt (fld_iff_unf :: ctr_defs) THEN
     1.8 -  rtac sumEN' 1 THEN
     1.9 +  Local_Defs.unfold_tac ctxt (fld_iff_unf :: ctr_defs) THEN rtac sumEN' 1 THEN
    1.10    Local_Defs.unfold_tac ctxt @{thms all_prod_eq} THEN
    1.11 -  EVERY' (map2 (fn k => fn m =>
    1.12 -     select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN' etac @{thm meta_mp}) k THEN'
    1.13 -     atac) (1 upto n) ms) 1;
    1.14 +  EVERY' (map2 (fn k => fn m => select_prem_tac n (REPEAT_DETERM_N m o dtac @{thm meta_spec} THEN'
    1.15 +    etac @{thm meta_mp}) k THEN' atac) (1 upto n) ms) 1;
    1.16  
    1.17  fun mk_fld_iff_unf_tac ctxt cTs cfld cunf fld_unf unf_fld =
    1.18    (rtac iffI THEN'
    1.19 @@ -47,9 +45,7 @@
    1.20    rtac @{thm sum.distinct(1)} 1;
    1.21  
    1.22  fun mk_inject_tac ctxt ctr_def fld_inject =
    1.23 -  Local_Defs.unfold_tac ctxt [ctr_def] THEN
    1.24 -  rtac (fld_inject RS ssubst) 1 THEN
    1.25 -  Local_Defs.unfold_tac ctxt @{thms sum.inject Pair_eq conj_assoc} THEN
    1.26 -  rtac refl 1;
    1.27 +  Local_Defs.unfold_tac ctxt [ctr_def] THEN rtac (fld_inject RS ssubst) 1 THEN
    1.28 +  Local_Defs.unfold_tac ctxt @{thms sum.inject Pair_eq conj_assoc} THEN rtac refl 1;
    1.29  
    1.30  end;