This example demonstrate how top filter the two texts that are to be
compared prior to their comparison. You can remove tags, strings,
links, and more that you don't want to be part of the comparison. You
can even implement an entirely custom string comparison function, and
then simply return random strings as the comparison strings.


function custom_diffing_filter($strings_array)
{ 
  $old_string = $strings_array[0];
  $new_string = $strings_array[1];

  // remove <footer> elements
  $remove_footer = "#<footer>.*</footer>#";
  $old_string = preg_replace($remove_footer, '', $old_string);
  $new_string = preg_replace($remove_footer, '', $new_string);

  // remove Wayback Machine URL prefixes from links
  $remove_footer = '#https?://web.archive.org/web/[0-9]+/#';
  $old_string = preg_replace($remove_footer, '', $old_string);
  $new_string = preg_replace($remove_footer, '', $new_string);

  return array($old_string, $new_string);
}

add_filter('minor_edits_text_diff_filter', 'custom_diffing_filter', 100, 1);

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You can be notified of minor or significant updates to a post by adding
a filter to the `minor_edits_post_status_minor_update` or the
`minor_edits_post_status_significant_update` actions. The below example
logs the URL of significantly updated posts to the server’s error log.

function log_significantly_updated_posts($new_post, $old_post)
{
  $post_link = get_permalink($new_post['ID']);
  error_log("Significantly updated post: {$post_link}", 0);
}