# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2016-01-09 11:04:03
# Node ID 24f1d3c70c41429f01d1f3276df8fef664187cd9
# Parent  1b0ef07ba783eda35e7796607c5395cf85bf24a4

extensions: copy extra __dict__ of original function

Future patches will make @command decorator set properties such as "norepo" to
a function object. This patch makes sure these properties never be lost by
wrapcommand() or wrapfunction().

This change won't be crazy as the standard functools.wraps() copies __dict__.

diff --git a/mercurial/extensions.py b/mercurial/extensions.py
--- a/mercurial/extensions.py
+++ b/mercurial/extensions.py
@@ -199,6 +199,7 @@ def _updatewrapper(wrap, origfn):
     '''Copy attributes to wrapper function'''
     wrap.__module__ = getattr(origfn, '__module__')
     wrap.__doc__ = getattr(origfn, '__doc__')
+    wrap.__dict__.update(getattr(origfn, '__dict__', {}))
 
 def wrapcommand(table, command, wrapper, synopsis=None, docstring=None):
     '''Wrap the command named `command' in table