HUSKY - Products Filter Professional for WooCommerce

From v.2.2.6/1.2.6

Uses for extension ‘SEO URL request‘ and allows to add additional languages for plugins like Polylang

Example:

add_filter('woof_seo_rules_langs',function($langs){
	$langs = array_merge($langs, array('en_US', 'es_ES'));
	return array_unique($langs);
});