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differ: compare actual props only (hyps may changed due to trivial steps involving assumptions);
authorwenzelm
Tue, 21 Sep 1999 17:07:28 +0200
changeset 7554 30327f9f6b4a
parent 7553 af3a1fe87c42
child 7555 dd281afb33d7
differ: compare actual props only (hyps may changed due to trivial steps involving assumptions);
src/Pure/Isar/calculation.ML file | annotate | diff | comparison | revisions 
--- a/src/Pure/Isar/calculation.ML	Tue Sep 21 17:06:49 1999 +0200
+++ b/src/Pure/Isar/calculation.ML	Tue Sep 21 17:07:28 1999 +0200
@@ -125,7 +125,8 @@
     val facts = Proof.the_facts state;
     val rules = Seq.of_list (if_none opt_rules [] @ get_local_rules state);
 
-    fun differ thms thms' = not (Library.equal_lists Thm.eq_thm (thms, thms'));
+    val eq_prop = op aconv o pairself (#prop o Thm.rep_thm);
+    fun differ thms thms' = not (Library.equal_lists eq_prop (thms, thms'));
     fun combine thms =
       Seq.map Library.single (Seq.flat (Seq.map (Method.multi_resolve (thms @ facts)) rules));
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