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src/HOL/Tools/Ctr_Sugar/ctr_sugar.ML
changeset 67399 eab6ce8368fa
parent 66251 cd935b7cb3fb
child 67405 e9ab4ad7bd15 
--- a/src/HOL/Tools/Ctr_Sugar/ctr_sugar.ML	Wed Jan 10 15:21:49 2018 +0100
+++ b/src/HOL/Tools/Ctr_Sugar/ctr_sugar.ML	Wed Jan 10 15:25:09 2018 +0100
@@ -477,7 +477,7 @@
       ||>> mk_Frees "f" case_Ts
       ||>> mk_Frees "g" case_Ts
       ||>> yield_singleton (mk_Frees "z") B
-      ||>> yield_singleton (apfst (op ~~) oo mk_Frees' "P") HOLogic.boolT;
+      ||>> yield_singleton (apfst (~~) oo mk_Frees' "P") HOLogic.boolT;
 
     val q = Free (fst p', mk_pred1T B);
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