cp-discount-over-regular-prices.php

<?php
/**
 * Plugin Name: WooCommerce Composite Products - Discounts over Regular Prices
 * Plugin URI: https://woocommerce.com/products/composite-products/
 * Description: Use this snippet to allow component-level discounts over regular prices.
 * Version: 1.0
 * Author: WooCommerce
 * Author URI: https://woocommerce.com/
 * Developer: Manos Psychogyiopoulos
 *
 * Requires at least: 3.8
 * Tested up to: 5.3
 *
 * Copyright: © 2021 Automattic.
 * License: GNU General Public License v3.0
 * License URI: http://www.gnu.org/licenses/gpl-3.0.html
 */
 
// To use this snippet, download this file into your plugins directory and activate it, or copy the code under this line into the functions.php file of your (child) theme.
 
add_filter( 'woocommerce_composited_product_discount_from_regular', 'wc_cp_composited_product_discount_from_regular', 10, 3 );

function wc_cp_composited_product_discount_from_regular( $from_regular, $component_id, $composite_id ) {
	return true;
}