--- a/mercurial/configitems.py	Fri Apr 06 22:22:19 2018 +0200
+++ b/mercurial/configitems.py	Tue Feb 27 02:37:31 2018 +0100
@@ -917,6 +917,9 @@
 coreconfigitem('server', 'disablefullbundle',
     default=False,
 )
+coreconfigitem('server', 'streamunbundle',
+    default=False,
+)
 coreconfigitem('server', 'maxhttpheaderlen',
     default=1024,
 )