diff -r a9053fa30909 -r 41108e3e9ca5 src/Pure/drule.ML
--- a/src/Pure/drule.ML	Fri Aug 09 15:58:26 2019 +0200
+++ b/src/Pure/drule.ML	Fri Aug 09 17:14:49 2019 +0200
@@ -256,7 +256,7 @@
 val export_without_context =
   flexflex_unique NONE
   #> export_without_context_open
-  #> Thm.close_derivation;
+  #> Thm.close_derivation \<^here>;
 
 
 (*Rotates a rule's premises to the left by k*)