I think some of the points made on your linked page are valid in this case, as well: throughout the world there are many countries with regions and cultures tha

I think some of the points made on your linked page are valid in this case, as well: throughout the world there are many countries with regions and cultures that don't identify with the country they're located in. Spain and Catalonia are a good example. Why do you want to show a flag next to the code? Does it add anything useful?