sybrew

<?php

\add_filter( 'wc_add_to_cart_message', function( $string, $product_id = 0 ) {

	$start = strpos( $string, '<a href=' ) ?: 0;
	$end = strpos( $string, '</a>', $start ) ?: 0;

	return substr( $string, $end ) ?: $string;
} );

websupporter

<?php
	add_filter( 'oembed_response_data', 'fwe_oembed_response_data', 11, 4 );
	function fwe_oembed_response_data(  $data, $post, $width, $height ){
		if ( ! is_object( $post ) )
			return $data;
		if( ! has_post_thumbnail( $post->ID ) )
			return $data;

		$thumbnail_id = get_post_thumbnail_id( $post->ID );
		$image = wp_get_attachment_image_src( $thumbnail_id, 'full' );