Maintain ?key=value when redirecting

I've tweaked submitagain_node_form_submit(...) to allow propagation of destination param. It works nice with Nodereference URL Module (It was my original need), allowing the creation of a bunch of secondary nodes from a view related to a primary node, and then coming back to de view in the last submit.
The key is $form_state['redirect'] can be an array, and the second value in this array can hold uri parameters, so propagating all parameters its only a matter of strings operation and sanitizing. My code is this:

function submitagain_node_form_submit($form, &$form_state) {
  $link = l(t('Visit your new post.'), 'node/'. $form_state['nid']);
  drupal_set_message($link);
  
  // Go back to same node/add/x form, but maintaining destination if it's set. 
  $form_state['redirect'] = array(
  	$_REQUEST['q'], // same node/add/x form
  	(isset($_REQUEST['destination']))? 'destination='.$_REQUEST['destination'] : '', //propagate destination, if it's set.
  );
  unset($_REQUEST['destination'], $_REQUEST['edit']['destination']);
}

Enjoy! I'm waiting for this usefull feature in next release! I hope it will be soon...! ;)

Ops!! It's for Drupal 6.

I am closing this issue, as it has been created for a release that is now not supported.