422 

   423 @command('debugdata', commands.debugrevlogopts, _('-c|-m|FILE REV'))

   424 def debugdata(ui, repo, file_, rev=None, **opts):

   425     """dump the contents of a data file revision"""

   426     if opts.get('changelog') or opts.get('manifest') or opts.get('dir'):

   427         if rev is not None:

   428             raise error.CommandError('debugdata', _('invalid arguments'))

   429         file_, rev = None, file_

   430     elif rev is None:

   431         raise error.CommandError('debugdata', _('invalid arguments'))

   432     r = cmdutil.openrevlog(repo, 'debugdata', file_, opts)

   433     try:

   434         ui.write(r.revision(r.lookup(rev)))

   435     except KeyError:

   436         raise error.Abort(_('invalid revision identifier %s') % rev)