Custom rewrite endpoints and wp_old_slug_redirect

[batmoo]

Previously: #33920

wp_old_slug_redirect currently only handles core rewrite endpoints (like feed and embed). If you have a custom rewrite endpoint, you end up redirected back to the new permalink.

You can use the [old_slug_redirect_url ​https://developer.wordpress.org/reference/hooks/old_slug_redirect_url/] filter to redirect correctly but the filter does not pass the post id, which makes things a bit challenging (especially if you need to do any processing beyond just appending the endpoint).

It would be nice if the post id was passed into the old_slug_redirect_url filter:

$link = apply_filters( 'old_slug_redirect_url', $link, $id );

It would be even nicer if the redirect handled custom endpoints automatically as well.

[MikeSchinkel]

Patch to include $id as a parameter