New item in ISO 639-2 - Zaza

[John Cowan]

Doug Ewell scripsit:

> But the macrolanguage in 639-3 doesn't just create itself, does it? 
> Suppose -- this is my whole point really -- suppose this happened in the 
> 3066ter era.  The Registry would contain primary language subtags "diq" 
> and "kiu".  Now suppose 639-2 adds "zza" and we need to add it as well. 
> We would have to reclassify "diq" and "kiu" from primary to extended, 
> right?

Yes, we'd have to deprecate diq and kiu in favor of zza-diq and zza-kiu
respectively.  (We need to make sure our deprecation rules allow that.)

OTOH, once the 639-3/RA is up and running and participating in the
RA/JAC, such events will become less likely.

> 
> Actually, it may be a blessing in disguise that this use case occurred 
> before we start working on 3066ter.

Indeed.

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