WordPress at a glance
filter is not described

woocommerce_cart_totals_coupon_label filter-hook . WC 1.0

translators: %s: coupon code

Usage

add_filter( 'woocommerce_cart_totals_coupon_label', 'filter_function_name_3585', 10, 2 );
function filter_function_name_3585( $sprintf, $coupon ){
	// filter...

	return $sprintf;
}
$sprintf
-
$coupon
-

Where the hook is called

wc_cart_totals_coupon_label()
woocommerce_cart_totals_coupon_label
woocommerce/includes/wc-cart-functions.php 264
$label = apply_filters( 'woocommerce_cart_totals_coupon_label', sprintf( esc_html__( 'Coupon: %s', 'woocommerce' ), $coupon->get_code() ), $coupon );

Where in WP core the hook is used WooCommerce

Usage not found.