Extraneous reference to 3166 in appmanifest

Dear Webapps,

I was looking at [1] today. I noticed this text in section 8.2:

--
A language tag is a string that matches the production of a Language-Tag defined in the [BCP47] specifications (see the IANA Language Subtag Registry for an authoritative list of possible values, see also the Maintenance Agency for ISO 3166 country codes)
--

I'm wondering why the reference to ISO 3166 country codes is maintained in addition to the IANA Language Subtag Registry. The IANA registry contains all of the 3166 values in a stabilized fashion and tracks changes to 3166. Is there a purpose to maintaining the additional reference (especially since other standards referenced by BCP 47 are not mentioned (e.g. ISO 639-1/-2/-3, UN M.49, ISO15927)?

Thanks,

Addison

[1] https://www.w3.org/TR/appmanifest/#lang-member


Addison Phillips
Principal SDE, I18N Architect (Amazon)
Chair (W3C I18N WG)

Internationalization is not a feature.
It is an architecture.

Received on Wednesday, 24 August 2016 19:34:13 UTC