LANGUAGE SUBTAG REGISTRATION FORM 19/01/2007 16:54:20, Serialize by Router o

Doug Ewell dewell at
Sat Jan 20 22:08:25 CET 2007

Addison Phillips <addison at yahoo dash inc dot com> wrote:

> It would help to read the instructions (RFC 4646). This request cannot 
> be registered because it is invalid for several reasons:
> 1. Region subtags cannot be registered...

1.5.  ISO 3166-2 code elements such as "VC" cannot be used as region 
subtags anyway.  They are not freely available from ISO (though widely 
known and available by other means); there are no particular guarantees 
of stability; and they conflict with existing subtags, not only 
syntactically but sometimes also semantically, as in this case.  The tag 
"ca-VC" already has a valid (if seldom-used) meaning: Catalan (ca) as 
used in St. Vincent and the Grenadines (VC).

Addison is correct: a variant subtag such as "valencia" is the right way 
to distinguish Catalan from Valencian.

Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14 

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