taxonomy_search

Hi!

How about to add a taxonomy search to drupal7 (or even to drupal 6.3)?
I wrote some Code to search the taxonomy for drupal6:

/**
* Implementation of hook_search().
*/
function taxonomy_search($op = 'search', $keys = NULL, $vid=NULL) {
        switch ($op) {
                case 'name':
                {
                return t('Taxonomy');
                }
                case 'search':
                {
                $find = array();
                if (!$vid){
                $db_result = db_query(db_rewrite_sql("SELECT t.tid, t.* FROM {term_data} t WHERE LOWER(t.name) LIKE LOWER('%%%s%%')", 't', 'tid'), trim($keys));
                }
                else {
                $db_result = db_query(db_rewrite_sql("SELECT t.tid, t.* FROM {term_data} t WHERE LOWER(t.name) LIKE LOWER('%%%s%%') AND t.vid=%d", 't', 'tid'), trim($keys), $vid);
                }
                        while ($term = db_fetch_object($db_result))
                        { $find[] = array('tid'=>$term->tid, 'title'=>$term->name, 'link'=>'/taxonomy/term/'.$term->tid);}
                return $find;
                }
        }
}

Although i added some code to taxonomy_form_alter() to support the search-module

if ($form_id == 'search_form' && $form['module']['#value'] == 'taxonomy') {
   $vocabs=taxonomy_get_vocabularies();
   $vop=array();
   foreach($vocabs as $voc)
   {
    $vop[$voc->vid]= $voc->name;
   }
   $form['vocabulary'] = array(
         '#type' => 'checkboxes',
         '#title' => t('In the vocabulary'),
         '#prefix' => '<div class="criterion">',
         '#size' => 10,
         '#suffix' => '</div>',
         '#options' => $vop,
         '#multiple' => TRUE,
         '#name' => 'vid',
      );
  }

TODO:
- how is this added to the search lick "Content" and "Users" are?
- how do i add the criteroin "vid"?
- some permission rules to search specific vocabularys.

tell me what you think!