# HG changeset patch
# User paulson
# Date 869564984 -7200
# Node ID 6ae62d55a620758cca0a1a9751d17fe92fc01467
# Parent  82f33248d89d119296e201f532e13bbb05065dba
Now possibility_tac is an explicit function, in order to delay
the evaluation of \!simpset

diff -r 82f33248d89d -r 6ae62d55a620 src/HOL/Auth/Public.ML
--- a/src/HOL/Auth/Public.ML	Tue Jul 22 11:26:02 1997 +0200
+++ b/src/HOL/Auth/Public.ML	Tue Jul 22 11:49:44 1997 +0200
@@ -129,7 +129,7 @@
 qed "Nonce_supply";
 
 (*Tactic for possibility theorems*)
-val possibility_tac =
+fun possibility_tac st = st |>
     REPEAT (*omit used_Says so that Nonces, Keys start from different traces!*)
     (ALLGOALS (simp_tac (!simpset delsimps [used_Says] setSolver safe_solver))
      THEN