git cl: stop downloading Gerrit commit-hook with --squash mode.

git_cl.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld."""
 
 from distutils.version import LooseVersion
@@ skipping 582 matching lines @@
     if not self.updated:
       # The only value that actually changes the behavior is
       # autoupdate = "false". Everything else means "true".
       autoupdate = RunGit(['config', 'rietveld.autoupdate'],
                           error_ok=True
                           ).strip().lower()
 
       cr_settings_file = FindCodereviewSettingsFile()
       if autoupdate != 'false' and cr_settings_file:
         LoadCodereviewSettingsFromFile(cr_settings_file)
-        # set updated to True to avoid infinite calling loop
-        # through DownloadGerritHook
-        self.updated = True
-        DownloadGerritHook(False)
       self.updated = True
 
   def GetDefaultServerUrl(self, error_ok=False):
     if not self.default_server:
       self.LazyUpdateIfNeeded()
       self.default_server = gclient_utils.UpgradeToHttps(
           self._GetRietveldConfig('server', error_ok=True))
       if error_ok:
         return self.default_server
       if not self.default_server:
@@ skipping 1620 matching lines @@
         print 'Upload upstream branch ' + upstream_branch + ' first.'
         return 1
     else:
       parent = cl.GetCommonAncestorWithUpstream()
 
     tree = RunGit(['rev-parse', 'HEAD:']).strip()
     ref_to_push = RunGit(['commit-tree', tree, '-p', parent,
                           '-m', message]).strip()
   else:
     if not git_footers.get_footer_change_id(change_desc.description):
+      DownloadGerritHook(False)
       AddChangeIdToCommitMessage(options, args)
     ref_to_push = 'HEAD'
     parent = '%s/%s' % (gerrit_remote, branch)
 
   commits = RunGitSilent(['rev-list', '%s..%s' % (parent,
                                                   ref_to_push)]).splitlines()
   if len(commits) > 1:
     print('WARNING: This will upload %d commits. Run the following command '
           'to see which commits will be uploaded: ' % len(commits))
     print('git log %s..%s' % (parent, ref_to_push))
@@ skipping 1707 matching lines @@
 if __name__ == '__main__':
   # These affect sys.stdout so do it outside of main() to simplify mocks in
   # unit testing.
   fix_encoding.fix_encoding()
   colorama.init()
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)