Created attachment 613919 [details]
experimental patch

Description of problem:
# yum groupremove traditional-chinese-support
Loaded plugins: langpacks, presto, refresh-packagekit
No Environment named traditional-chinese-support exists
Resolving Dependencies
--> Running transaction check
---> Package cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-49.fc18 will be erased
---> Package cjkuni-uming-fonts.noarch 0:0.2.20080216.1-50.fc18 will be erased
---> Package ibus-chewing.x86_64 0:1.4.2-1.fc18 will be erased
--> Finished Dependency Resolution
Traceback (most recent call last):
  File "/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 319, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 185, in main
    (result, resultmsgs) = base.buildTransaction() 
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1142, in buildTransaction
    self.plugins.run('postresolve', rescode=rescode, restring=restring)
  File "/usr/lib/python2.7/site-packages/yum/plugins.py", line 187, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File "/usr/lib/yum-plugins/langpacks.py", line 315, in postresolve_hook
    remove_matches_from_ts(conduit, group.langonly)
TypeError: remove_matches_from_ts() takes exactly 3 arguments (2 given)

Version-Release number of selected component (if applicable):
yum-langpacks-0.3.0-2.fc18.noarch

How reproducible:
always

Additional info:
Patch is provided.