Mon, 12 Jun 2006 21:19:04 +0200 wenzelm added matchers, matches_list;
Mon, 12 Jun 2006 21:19:03 +0200 wenzelm removed matches_seq -- didn't quite work;
Mon, 12 Jun 2006 21:19:02 +0200 wenzelm Unify.matches_list;
Mon, 12 Jun 2006 21:19:00 +0200 wenzelm tuned Seq/Envir/Unify interfaces;
Mon, 12 Jun 2006 21:18:10 +0200 wenzelm fixed subst step;
Mon, 12 Jun 2006 20:58:25 +0200 wenzelm avoid accidental binding of ?Jmp;
Mon, 12 Jun 2006 20:32:33 +0200 urbanc added lemma fresh_unit to Nominal.thy
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