/**
  * Fetch file's user id if it's available to this user
  *
  * @param File|ArchivedFile $file
  * @return string HTML fragment
  */
 function getFileUser($file)
 {
     if (!$file->userCan(File::DELETED_USER, $this->getUser())) {
         return '<span class="history-deleted">' . $this->msg('rev-deleted-user')->escaped() . '</span>';
     }
     $link = Linker::userLink($file->getRawUser(), $file->getRawUserText()) . Linker::userToolLinks($file->getRawUser(), $file->getRawUserText());
     if ($file->isDeleted(File::DELETED_USER)) {
         $link = '<span class="history-deleted">' . $link . '</span>';
     }
     return $link;
 }