prepend_attachment example

function wp_embed_excerpt_attachment( $content ) {
    if ( is_attachment() ) {
        return prepend_attachment( '' );
    }

    return $content;
}

/** * Enqueues embed iframe default CSS and JS. * * Enqueue PNG fallback CSS for embed iframe for legacy versions of IE. * * Allows plugins to queue scripts for the embed iframe end using wp_enqueue_script(). * Runs first in oembed_head(). * * @since 4.4.0 */