What products support 3-digit region subtags, e.g., es-419 for Latin-American Spanish?

What products support 3-digit region subtags, e.g., es-419 for Latin-American Spanish?

Are web browsers, translati开发者_StackOverflowon tools and translators familiar with these numeric codes in addition to the more common "es" or "es-ES"?

I've already visited the following pages:

• W3C Choosing a Language Tag
• W3C Language tags in HTML and XML
• RFC 5646 Tags for Identifying Languages
• Microsoft National Language Support (NLS) API Reference

I doubt that many products like that exist. It seems that some main stream programming languages (I have tested C# and Java) does not support these tags, therefore it would be quite hard to develop programs that does so.

BTW. NLS API Reference that you have provided, does not contain region tag for any of the LCID definition. And if you think of it for the moment, knowing how Locale Identifier is built, there is no way to support it now, actually. Implementation change would be required (they should use some reserved bits, I suppose).

I don't think we will see support for region tags in foreseeable future.

Edit

I saw that Microsoft assigned LCID of value -1 and -2 to "European Union 1" and "European Union 2" respectively. However I don't think it is related.