Configurable permissions behavior (Allow TAC and TAC Lite integration)

Just to note - I've checked this patch with development and stable versions (can't access repository at work), and tested for compatibility with Taxonomy Access Control and Taxonomy Access Control Lite. Change seems simple enough.

I'd like to know if it'll have it's way to the next version, as the policy here is to avoid custom patches that will not make it to the module.
If there is any other way to achieve TAC compatibility (without patching any other module, that is) and you find this modification unneeded, please direct me to the solution.

Of course we could.
I might try to make hook patch, "default behavior" module and tac-integration module during weekend.
But I'm so newbie in drupal that your code would look much better I bet.

Hope this patch Will be satisfying. It creates a hook that will allow "bridge" modules to do their work, and tries to be smart if they argue.

How does it work:

Module should return array with it's answer, like that:

// $Id$

/**
 * @file
 * Enhances the ad module to support Taxonomy Access Control.
 *
 * Contributed by 
 * 
 * 2010 
 *    Rafal Molotkiewicz | Warsaw City, Poland
 */

function ad_tac_ad_overwrite_access($original_result, $op, $node, $account) {
//  echo $op.' '.(is_null($original_result)?'null':($original_result?'true':'false')).'<br/>';
  return array(null);
}

Comment left for easier debugging ;)
Returning plain true or false should work as well, but I discourage.
Returning plain null makes hook's result to gets ignore.