old_contents: '''
  Support for Gentoolkit
  
  '''
  
  __outputter__ = {
      'revdep_rebuild':  'txt',
  }
  
  def revdep_rebuild(lib=None):
      '''
      Fix up broken reverse dependencies
  
      lib
          Search for reverse dependencies for a particular library rather
          than every library on the system. It can be a full path to a
          library or basic regular expression.
  
      CLI Example::
  
          salt '*' gentoolkit.revdep_rebuild
      '''
      cmd = 'revdep-rebuild --quiet --no-progress'
      if lib is not None:
          cmd += ' --library={0}'.format(lib)
      return __salt__['cmd.run'](cmd)
  
new_contents: '''
  Support for Gentoolkit
  
  '''
  
  def revdep_rebuild(lib=None):
      '''
      Fix up broken reverse dependencies
  
      lib
          Search for reverse dependencies for a particular library rather
          than every library on the system. It can be a full path to a
          library or basic regular expression.
  
      CLI Example::
  
          salt '*' gentoolkit.revdep_rebuild
      '''
      cmd = 'revdep-rebuild --quiet --no-progress'
      if lib is not None:
          cmd += ' --library={0}'.format(lib)
      return __salt__['cmd.retcode'](cmd) == 0
  
subject: Return the retcode from revdep-rebuild in gentoolkit module