In a way IT IS stabilized.

see below

New ISO 639-1 codes are not added if an ISO 639-2 code exists, so systems that use ISO 639-1 and 639-2 codes, with 639-1 codes preferred, do not have to change existing codes.[1]

If an ISO 639-2 code that covers a group of languages is used, it might be overridden for some specific languages by a new ISO 639-1 code.

ISO 639-1 codes added after RFC publication in January 2001
ISO 639-1 ISO 639-2 Name Date added Previously covered by
io ido Ido 2002-01-15 art
wa wln Wallon 2002-01-29 roa
li lim Limburgish 2002-08-02 gem
ii iii Sichuan Yi 2002-10-14 sit
an arg Aragonese 2002-12-23 roa
ht hat Haitian Creole 2003-02-26 cpf
I am not sure this was the best way to solve the problem...

In ISO 3166-1 each country or dependent entity has BOTH an alpha-2 and an alpha-3 code point.
In some cases it can be useful to use one and some cases to use the other one.

It seems (from the request that originated this discussion) that it may be the same for official (or administrative) languages of indenpendant countries.

If in ISO 639 things are frozen until the end of the world then...we'll have to wait for a long time !

Best regards


2011/4/18 Michael Everson <[log in to unmask]>
Should ISO 639-1 be formally stabilized?

Michael Everson *