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

Peter Constable petercon at
Fri Dec 11 23:18:26 CET 2009

From: ietf-languages-bounces at [mailto:ietf-languages-bounces at] On Behalf Of Randy Presuhn

> We should also keep in mind the RFC 5646 section 3.4 (13) 
> principle of not adding a new subtag with semantics identical  
> to something already in the registry.

That one may be tricky. In the case of an ID/name being deprecated because it was deemed to denote the same language as coded by another existing ID, then that rule would apply. But in the case of an ID we would now deem to have null denotation, there was an assumed non-null denotation* that may have been applied (albeit only tentatively or in factual error) in some application. To say all these null-denotation items are semantically identical would not, IMO, be appropriate.

(*Scenario: someone registered a language on the basis of reports that "the people in the village on the other side of that pass speak Foobian", but later, after a route through the pass has been surveyed, it's discovered that the that village was deserted 50 years ago with no trace of its inhabitants.)

That's not intended as a positive argument that the set in question should be added to the LSR; it's only a caveat on what implications to draw from your observation.


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