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src/HOL/ex/Unification.thy
changeset 58310 91ea607a34d8
parent 58249 180f1b3508ed
child 58889 5b7a9633cfa8 
--- a/src/HOL/ex/Unification.thy	Thu Sep 11 19:26:59 2014 +0200
+++ b/src/HOL/ex/Unification.thy	Thu Sep 11 19:32:36 2014 +0200
@@ -32,7 +32,7 @@
 
 text {* Binary trees with leaves that are constants or variables. *}
 
-datatype_new 'a trm = 
+datatype 'a trm = 
   Var 'a 
   | Const 'a
   | Comb "'a trm" "'a trm" (infix "\<cdot>" 60)
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