New Last Call: 'Tags for Identifying Languages' to BCP

Bruce Lilly blilly at
Mon Dec 13 01:01:43 CET 2004

>  Date: 2004-12-12 15:33
>  From: "Peter Constable" <petercon at>
>  To: ietf at, ietf-languages at
> > From: ietf-languages-bounces at [mailto:ietf-languages-
> > bounces at] On Behalf Of Bruce Lilly
> > The point is that under RFC 3066,
> > the bilingual ISO language and country code lists are
> > considered definitive.
> That is nowhere stated or even suggested in RFC 3066.

RFC 3066 section 2.2 states, in part:

   - All 2-letter subtags are interpreted according to assignments found
     in ISO standard 639, "Code for the representation of names of
     languages" [ISO 639], or assignments subsequently made by the ISO
     639 part 1 maintenance agency or governing standardization bodies.

and has a similar statement regarding ISO 3166.

"interpreted according to assignments found in" certainly
sounds as if the ISO lists are considered definitive for
their respective categories of subtags, since their
interpretation is specified as that given in those lists.
I don't see how the RFC 3066 text can be interpreted

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