--- a/src/HOL/Data_Structures/AA_Set.thy Tue Feb 23 15:37:18 2016 +0100
+++ b/src/HOL/Data_Structures/AA_Set.thy Tue Feb 23 16:25:08 2016 +0100
@@ -135,4 +135,4 @@
case 4 thus ?case by(simp add: inorder_delete)
qed auto
-end
\ No newline at end of file
+end