HTML Filtering (How?)

Ditto. I installed the latest diff module (version 2.1) and do not see how to filter out HTML tags from the displayed diff output. Is this supported natively now, or do we need to incorporate a patch of some sort.

We hacked into the diff module to strip out HTML stuff before comparing various revisions. Our customers only care when the raw content changes...not formatting. It would be nice to have this as a configurable options.

Here are the changes to node.inc's node_diff():

  if ($type->has_body) {
    // replace <br>'s with LF's
    $old_node->body = str_replace(array("<br>", "<br />"), "\n", $old_node->body);
    $new_node->body = str_replace(array("<br>", "<br />"), "\n", $new_node->body); 
  
    // replace <p>'s with LF's - then strip the closing </p> - this is so much easier than preg_replace to find contents of paragraph
    $old_node->body = str_replace("<p>", "\n", $old_node->body);
    $new_node->body = str_replace("<p>", "\n", $new_node->body); 
   
    //  then strip the rest
    $old_node->body = strip_tags(html_entity_decode($old_node->body, ENT_QUOTES));
    $new_node->body = strip_tags(html_entity_decode($new_node->body, ENT_QUOTES));
  ...

Marking as a duplicate of #458672: Use real HTML-Diff algorithm in Drupal Diff module.