Force Revision Log Message Entry

There is no functionality in Drupal 6 to force users to enter a Revision Log. The following page explains how to make your own module to do this.

http://drupal.org/node/369348

<?php
function enforce_revlog_nodeapi(&$node, $op, $arg = 0){
  switch($op)
  {
    case 'validate':
      // if revision is checked and log message is empty, complain.
      // add "&& $node->nid" below to ignore empty log for new content.
      if ( $node->revision && empty($node->log) ) {
        if ( user_access('administer nodes')) 
          form_set_error('log', t('Please enter a revision log message or uncheck the revision checkbox.'));
        else
          form_set_error('log', t('Please enter a revision log message.'));
      }
    }
}
?>

It would be nice to have this code in a module that I can simply download from the drupal site instead of maintaining my own modules. If you don't implement this that's fine, just thought it would be handy for this to be part of the util module which I install on all my sites already.