WordPress at a glance
filter is not described

woocommerce_coupon_message filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_coupon_message', 'filter_function_name_749', 10, 3 );
function filter_function_name_749( $msg, $msg_code, $that ){
	// filter...

	return $msg;
}
$msg
-
$msg_code
-
$that
-

Where the hook is called

WC_Coupon::get_coupon_message()
woocommerce_coupon_message
woocommerce/includes/class-wc-coupon.php 949
return apply_filters( 'woocommerce_coupon_message', $msg, $msg_code, $this );

Where in WP core the hook is used WooCommerce

Usage not found.