# HG changeset patch # User paulson # Date 857986352 -3600 # Node ID 9c42ae57b5f4840ba9ba1f012c7b0a7e9c29f73d # Parent 40219658ce6461192b3eb91bb3838ef6776b468c The contr_tac, which replaces a fast_tac, is needed only because eq_assume_tac does not recognize eta-equality. But making it do so is costly diff -r 40219658ce64 -r 9c42ae57b5f4 src/HOL/MiniML/W.ML --- a/src/HOL/MiniML/W.ML Fri Mar 07 16:44:28 1997 +0100 +++ b/src/HOL/MiniML/W.ML Mon Mar 10 10:32:32 1997 +0100 @@ -513,9 +513,10 @@ by (rotate_tac ~3 1); by (Asm_full_simp_tac 1); by (safe_tac HOL_cs); +by (contr_tac 1); by (fast_tac (HOL_cs addIs [sym RS W_var_geD,new_tv_W RS conjunct1,new_scheme_list_le,new_tv_subst_scheme_list]) 1); - +(** LEVEL 35 **) by (subgoal_tac "$ (%x.if x=ma then t' else (if x:(free_tv t - free_tv Sa) then R x \ \ else Ra x)) ($ Sa t) = \