Private Use Variant Subtag

Gordon P. Hemsley gphemsley at
Fri Mar 30 22:20:11 CEST 2012

Mark, Phillip,

Perhaps I wasn't clear. I'm not looking for alternatives to variant
tags. I'm well aware of the -x- private use singleton.

What I need is a variant tag that is guaranteed to be unassigned. One
that matches the definition exactly:

 variant       = 5*8alphanum         ; registered variants
               / (DIGIT 3alphanum)

Using -x- does not solve my problem.


On Fri, Mar 30, 2012 at 12:58 PM, Philip Newton <philip.newton at> wrote:
> On Fri, Mar 30, 2012 at 18:56, Philip Newton <philip.newton at> wrote:
>> I must admit I'm a bit puzzled at the OP's claim that "there do not
>> appear to be any variant subtags set aside for private use"
> ...and I failed to see that the OP specifically talked about _variant_
> subtags. Apologies.
> In which case -x- is what I would have thought of, too.
> Cheers,
> Philip
> --
> Philip Newton <philip.newton at>
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Gordon P. Hemsley
me at

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