diff -r f00eef0922ff -r e7dbccabc982 mercurial/configitems.py
--- a/mercurial/configitems.py	Wed Oct 11 03:45:14 2017 +0200
+++ b/mercurial/configitems.py	Wed Oct 11 03:49:04 2017 +0200
@@ -368,6 +368,9 @@
 coreconfigitem('http_proxy', 'user',
     default=None,
 )
+coreconfigitem('logtoprocess', 'commandexception',
+    default=None,
+)
 coreconfigitem('merge', 'checkunknown',
     default='abort',
 )