# HG changeset patch
# User Augie Fackler <raf@durin42.com>
# Date 2017-03-03 18:27:21
# Node ID d79761fe697fafd6bc5a2b7e15a37169c66d4ade
# Parent  1871a1ee64ed49172b1568b89cdbab126284b309

extensions: use inspect module instead of func_code.co_argcount

Fixes the extsetup argspec check on Python 3.

diff --git a/mercurial/extensions.py b/mercurial/extensions.py
--- a/mercurial/extensions.py
+++ b/mercurial/extensions.py
@@ -8,6 +8,7 @@
 from __future__ import absolute_import
 
 import imp
+import inspect
 import os
 
 from .i18n import (
@@ -150,7 +151,7 @@ def _runextsetup(name, ui):
         try:
             extsetup(ui)
         except TypeError:
-            if extsetup.func_code.co_argcount != 0:
+            if inspect.getargspec(extsetup).args:
                 raise
             extsetup() # old extsetup with no ui argument