diff -r 6742e18e41f0 -r b0a567017647 mercurial/configitems.py
--- a/mercurial/configitems.py	Fri Jun 30 03:45:33 2017 +0200
+++ b/mercurial/configitems.py	Fri Jun 30 03:45:34 2017 +0200
@@ -591,6 +591,9 @@
 coreconfigitem('web', 'allow_archive',
     default=list,
 )
+coreconfigitem('web', 'allow_read',
+    default=list,
+)
 coreconfigitem('worker', 'backgroundclose',
     default=dynamicdefault,
 )