Request: Add retired tag "eml" to the IANA registry

Doug Ewell doug at
Fri Dec 11 15:30:39 CET 2009

"Michael(tm) Smith" <mike at w3 dot org> wrote:

> So lacking any likelihood of those retired tags actually getting into 
> the IANA subtag registry, I'd suggest it'd at least be nice to have --  
> in whatever IETF or IANA document where it would be most 
> appropriate -- some statement of guidance to developers saying, "Tools 
> that check and report on instances of usage of language subtags SHOULD 
> use both the data in the IANA subtag registry and the available data 
> about IS0-639-3 retired codes."

They should not.  Code elements from ISO 639-3 that were retired prior 
to the approval of RFC 5646 were never valid in BCP 47 language tags. 
They may have been valid in non-BCP 47 applications that don't use the 
Registry, but instead use ISO 639 code elements directly (or make up 
their own, like the Wikipedias), but that is not at issue here.

Doug Ewell  |  Thornton, Colorado, USA  |
RFC 5645, 4645, UTN #14  |  ietf-languages @ ­

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