--- a/mercurial/configitems.py	Thu Jun 28 21:24:47 2018 +0530
+++ b/mercurial/configitems.py	Thu Jun 28 18:07:22 2018 -0700
@@ -566,6 +566,9 @@
 coreconfigitem('experimental', 'remotenames',
     default=False,
 )
+coreconfigitem('experimental', 'removeemptydirs',
+    default=True,
+)
 coreconfigitem('experimental', 'revlogv2',
     default=None,
 )