diff -r 155e3308289c -r c90cfe76e024 mercurial/commands.py
--- a/mercurial/commands.py	Sat Feb 27 12:56:26 2016 +0100
+++ b/mercurial/commands.py	Wed Mar 09 02:07:40 2016 +0000
@@ -6320,7 +6320,7 @@
     [('A', 'accesslog', '', _('name of access log file to write to'),
      _('FILE')),
     ('d', 'daemon', None, _('run server in background')),
-    ('', 'daemon-postexec', '', _('used internally by daemon mode')),
+    ('', 'daemon-postexec', [], _('used internally by daemon mode')),
     ('E', 'errorlog', '', _('name of error log file to write to'), _('FILE')),
     # use string type, then we can check if something was passed
     ('p', 'port', '', _('port to listen on (default: 8000)'), _('PORT')),