root/trunk/lib/helper/MoreTagsHelper.php

<?php
sfLoader::loadHelpers('Tags');
/**
 * This function is used to generate a related tag cloud (see taggable plugin)
 * but avoid urlencoding the commas in the url.
 *
 * @param  mixed  $tags
 * @param  string $route
 * @param  string $tag
 * @param  array  $options
 * @return string
 */
function more_related_tag_cloud($tags, $route, $tag, $options = array())
{
  $related_cloud = related_tag_cloud($tags, $route, $tag, $options);
  return str_replace(urlencode(','), ',', $related_cloud);
}