diff -r e70cbae4c4e6 -r c41cbe98822c mercurial/configitems.py
--- a/mercurial/configitems.py	Sun Jun 25 14:41:12 2017 +0200
+++ b/mercurial/configitems.py	Fri Jun 23 17:19:29 2017 +0200
@@ -42,6 +42,9 @@
 coreconfigitem('ui', 'clonebundleprefers',
     default=[],
 )
+coreconfigitem('ui', 'interactive',
+    default=None,
+)
 coreconfigitem('ui', 'quiet',
     default=False,
 )