do_shortcode-2

It all has started there: https://wordpress.org/support/topic/do_shortcode-5?replies=5 Since the topic is closed and I didn’t see any link or form to reopen it, I create this one. Based on what David had written, I suppose, one should add some processing for the gallery to the following code: function filter_gallery_shortcode_output_29832( $gallery, $attr ) { remove_filter( 'post_gallery', __FUNCTION__, 10, 2 ); $gallery = gallery_shortcode( $attr ); add_filter( 'post_gallery', __FUNCTION__, 10, 2 ); // Change the output // $gallery = ... return $gallery; } add_filter( 'post_gallery', 'filter_gallery_shortcode_output_29832', 10, 2 ); I also think that it should be something very similar to what is happening in the add_attribute() in bluimp: https://plugins.trac.wordpress.org/browser/blueimp-lightbox/trunk/lib/class-blueimp-lightbox.php#L60 But I don’t get what exactly 🙁 Could someone help/give a hint please? https://wordpress.org/plugins/blueimp-lightbox/