src/HOL/Tools/BNF/bnf_fp_util.ML
changeset 72154 2b41b710f6ef
parent 71247 6e0ff949073e
child 72450 24bd1316eaae
--- a/src/HOL/Tools/BNF/bnf_fp_util.ML	Fri Aug 14 14:25:08 2020 +0200
+++ b/src/HOL/Tools/BNF/bnf_fp_util.ML	Fri Aug 14 14:40:24 2020 +0200
@@ -769,7 +769,7 @@
 
     val ((co_rec_frees, (_, co_rec_def_frees)), (lthy, lthy_old)) =
       lthy
-      |> Local_Theory.open_target |> snd
+      |> Local_Theory.open_target
       |> fold_map (fn i =>
         Local_Theory.define ((co_rec_bind i, NoSyn), (co_rec_def_bind i, co_rec_spec i))) ks
       |>> apsnd split_list o split_list