1.1 --- a/src/HOL/BNF/Tools/bnf_fp_rec_sugar_tactics.ML	Tue Oct 15 17:21:16 2013 +0200
     1.2 +++ b/src/HOL/BNF/Tools/bnf_fp_rec_sugar_tactics.ML	Tue Oct 15 22:55:01 2013 +0200
     1.3 @@ -41,6 +41,7 @@
     1.4    SELECT_GOAL (unfold_thms_tac ctxt
     1.5        @{thms not_not not_False_eq_True not_True_eq_False de_Morgan_conj de_Morgan_disj} THEN
     1.6      SOLVE (HEADGOAL (REPEAT o (rtac refl ORELSE' atac ORELSE' etac conjE ORELSE'
     1.7 +    eresolve_tac falseEs ORELSE'
     1.8      resolve_tac @{thms TrueI conjI disjI1 disjI2} ORELSE'
     1.9      dresolve_tac discIs THEN' atac ORELSE'
    1.10      etac notE THEN' atac ORELSE'