Security, Theming, and Code Review

minor fix of SQL quotes

The attached patch fixes an array problem with block->users and block->tags in the re-worked delicious_recent(). It also adds a feature that allows module developers to extend the users and tags at run time by adding a callback to hook_delicious.

And yet another update so that the newly implemented hook_delicious returns the values.

Below is an example of how to use this. It implements two different scenarios in a custom module. The first scenario (the first case statement) alters the block on a node page to display only the delicious tags associated with node's taxonomy. The second scenario (case statement) alters the block on the search page to only display the delicious tags associated with the current search terms.

function example_delicious($op, &$items) {
  if ($op == 'tags') {
    switch (arg(0)) {
      case 'node':
        $tags = array();
        if (($nid = arg(1)) && !arg(2)) {
          $node = node_load($nid);
          foreach ($node->taxonomy as $tid => $term) {
            $tags[$term->name] = $term->name;
          }
        }
        return $tags;
      case 'search':
        $query = search_parse_query(search_get_keys());
        return $query[3];
    }
  }
}

@paul, I went ahead and checked these in. Sorry for not waiting for your review on this. I'm on a tight client deadline, and I had some other patches to check in that are related. I hope that this issue is cleanly documented for you, and that all these changes are acceptable for you.