function taxonomyautocomplete2_autocomplete($vid, $tags_typed = '') {
  // The user enters a comma-separated list of tags. We only autocomplete the last tag.
  $tags_typed = drupal_explode_tags($tags_typed);
  $tag_last = drupal_strtolower(array_pop($tags_typed));
 
  $matches = array();
  if ($tag_last != '') {
 
    $query = db_select('taxonomy_term_data', 't');
    $query->addTag('translatable');
    $query->addTag('term_access');
 
    // Do not select already entered terms.
    if (!empty($tags_typed)) {
      $query->condition('t.name', $tags_typed, 'NOT IN');
    }
    // Select rows that match by term name.
    $tags_return = $query
      ->fields('t', array('tid', 'name'))
      ->condition('t.vid', $vid)
      ->condition('t.name', db_like($tag_last) . '%', 'LIKE')
      ->range(0, 10)
      ->execute()
      ->fetchAllKeyed();
 
    $prefix = count($tags_typed) ? drupal_implode_tags($tags_typed) . ', ' : '';
 
    $term_matches = array();
    foreach ($tags_return as $tid => $name) {
      $n = $name;
      // Term names containing commas or quotes must be wrapped in quotes.
      if (strpos($name, ',') !== FALSE || strpos($name, '"') !== FALSE) {
        $n = '"' . str_replace('"', '""', $name) . '"';
      }
      // Add term name to list of matches.
      $term_matches[$prefix . $n] = check_plain($name);
    }
  }
 
  drupal_json_output($term_matches);
}