In result list, link to parent node displays as escaped HTML, not as a hypertext link

In Drupal 5.2 and 5.3 (doesn't happen in 5.0, 5.1 not tested yet), the link in the result list to the parent node is displayed as escaped HTML. Here is the code that shows how each item in the result list is created:

 $results[] = array(
                  'link' => $file['link'],
                  'type' => node_get_types('name', $node) . ' - ' . l($node->title,'node/' . $node->nid),
                  'title' => t('Attachment') . ': ' . $file['name'].' ['.format_size($file['size']).']',
                  'snippet' => search_excerpt($keys, $dataset->data),
                );

It looks like the l() function is escaping the HTML that it is wrapping around $node->title. This happens in all themes that come bundled with Drupal.