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  switch ($section) {

    case 'drush:feeds-list-importers':

      return dt('Show a list of available Feeds importers with information about them.');

    case 'drush:feeds-list-feeds':

      return dt("List all feed sources. You can limit the number of feed sources to display by setting the option '--limit'.");

    case 'drush:feeds-import':

      $help = dt("Import items from a feed. Follow the command with the importer name to import items with. If the importer is attached to a content type, specify also the feed node with the option '--nid'.");

      $help .= "\n" . dt("Note that the options '--file', '--stdin' and '--url' temporary bypass the configured fetcher and do *not* update the source configuration. For example, if a file was uploaded for the feed source, that file will remain there even when you specify a different file using the '--file' option. Same story applies for when importing from a url. If you omit these options, the last stored source will be used.");

      return $help;

    case 'drush:feeds-import-all':

      return dt('Import items from all feeds. Optionally specify the importer name to import all feeds for.');

    case 'drush:feeds-clear':

      return dt("Delete all items from a feed. Follow the command with the importer name to delete items from. If the importer is attached to a content type, specify also the feed node with the option '--nid'.");

    case 'drush:feeds-enable':

      return dt('Enable the specified Feeds importers. Follow the command with a space delimited list of importer names.');

    case 'drush:feeds-disable':

      return dt('Disable the specified Feeds importers. Follow the command with a space delimited list of importer names.');

    case 'drush:feeds-delete':

      return dt('Delete the specified Feeds importers. Follow the command with a space delimited list of importer names.');

    case 'drush:feeds-revert':

      return dt('Revert the specified Feeds importers. Follow the command with a space delimited list of importer names.');

  }

 *   NULL otherwise.

 */

function _drush_feeds_find_file($filename) {

  if (is_file($filename)) {

    // Found!

    return $filename;