UN M.49 in language tags & locales
doug at ewellic.org
Mon Nov 9 19:36:16 CET 2015
Don Osborn wrote:
> Trying to catch up on what the current rules are on use of 3-digit
> region codes in language tags and got lost in the wording of RFC 5646.
> Also interested to know if these UN M.49 codes can still be used in
The rules were set out in RFC 4645, Section 2.
In short, the code elements for macro-geographical regions are in; those
for individual countries (because they already have two-letter code
elements from ISO 3166-1) and for non-geographical categories like
"economic groupings" are out.
You can get an up-to-date list by looking in the Language Subtag
Registry . The three-digit region subtags are listed immediately
after the two-letter ones.
Doug Ewell | http://ewellic.org | Thornton, CO 🇺🇸
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