diff -r bad46c934c31 -r ab09e797fbed mercurial/configitems.py
--- a/mercurial/configitems.py	Sat Oct 20 00:12:20 2018 +0300
+++ b/mercurial/configitems.py	Sat Oct 13 05:02:55 2018 -0700
@@ -699,6 +699,10 @@
 coreconfigitem('fsmonitor', 'warn_update_file_count',
     default=50000,
 )
+coreconfigitem('help', 'hidden-command\..*',
+    default=False,
+    generic=True,
+)
 coreconfigitem('hooks', '.*',
     default=dynamicdefault,
     generic=True,