6183         c = repo[None]

  6183         c = repo[None]

  6184         if c.dirty(merge=False, branch=False, missing=True):

  6184         if c.dirty(merge=False, branch=False, missing=True):

  6185             raise util.Abort(_("uncommitted changes"))

  6185             raise util.Abort(_("uncommitted changes"))

  6186         if rev is None:

  6186         if rev is None:

  6187             rev = repo[repo[None].branch()].rev()

  6187             rev = repo[repo[None].branch()].rev()

  6189 

  6188 

  6190     repo.ui.setconfig('ui', 'forcemerge', tool, 'update')

  6189     repo.ui.setconfig('ui', 'forcemerge', tool, 'update')

  6191 

  6190 

  6192     if clean:

  6191     if clean:

  6193         ret = hg.clean(repo, rev)

  6192         ret = hg.clean(repo, rev)