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add_filter( 'woocommerce_add_to_cart_message', 'woocommrece_custom_add_to_cart_message' );
 
function woocommrece_custom_add_to_cart_message() {
 
	global $woocommerce;
 
// Output success messages
 
	if ( get_option( 'woocommerce_cart_redirect_after_add' ) == 'yes' ) {
 
		$return_to = get_permalink( woocommerce_get_page_id( 'shop' ) ); // Give the url, you want to redirect
		$message   = sprintf( '<a href="%s" class="button">%s</a> %s', $return_to, __( 'More Donation Options &rarr;', 'woocommerce' ), __( 'Donation successfully added to your cart.', 'woocommerce' ) );
	} else {
 
		$message = sprintf( '<a href="%s">%s</a> %s', get_permalink( woocommerce_get_page_id( 'cart' ) ), __( 'View Cart &rarr;', 'woocommerce' ), __( 'Donation successfully added to your cart.', 'woocommerce' ) );
 
	}
 
	return $message;
 
}