--- a/mercurial/configitems.py Wed Jun 28 14:53:54 2017 -0700
+++ b/mercurial/configitems.py Wed Jun 28 13:19:40 2017 +0200
@@ -56,6 +56,9 @@
coreconfigitem = getitemregister(coreitems)
+coreconfigitem('devel', 'all-warnings',
+ default=False,
+)
coreconfigitem('patch', 'fuzz',
default=2,
)