--- a/mercurial/configitems.py	Fri Jun 30 03:45:50 2017 +0200
+++ b/mercurial/configitems.py	Fri Jun 30 03:45:51 2017 +0200
@@ -637,6 +637,9 @@
 coreconfigitem('web', 'refreshinterval',
     default=20,
 )
+coreconfigitem('web', 'stripes',
+    default=1,
+)
 coreconfigitem('worker', 'backgroundclose',
     default=dynamicdefault,
 )