foreach ($tags as $name => $content) {
    if (empty($content)) {
      continue;
    }

    $parts = explode(':', $name);

    if (!isset($parts[1])) {
      $parts[1] = $parts[0];
    }

    if ($output_type == 'update index') {
      $bool = (
        isset($tags_info[$parts[0]]['tag:template:index'][$parts[1]]) &&
        ($meta_content = trim(check_plain(strip_tags(decode_entities($content)))))
      );