Re: [art] [Last-Call] Language tags and YANG

[tom petch <[e-mail]>]

On 01/07/2022 07:44, Martin J. Dürst wrote:
> On 2022-06-30 20:27, Carsten Bormann wrote:
>
>> Note that
>> [a-zA-Z]{1,8}(-[a-zA-Z0-9]{1,8})*
>> is a bit more than a length restriction, it is also defining the
>> characters that can be used in a language tag.
>
> Well, to be precise, it is a bit more and a bit less than a length
> restriction. It restricts the length of each subtag to 8 or less ASCII
> letters/digits, with intervening hyphens, but it does not impose any
> length restriction on the overall tag.

Which, for once, is very easy to do, along with multiple pattern 
constraints, in YANG!

Tom Petch

> For further details on length considerations, if you have the time
> please see
> https://www.rfc-editor.org/rfc/rfc5646.html#section-4.4
>
>> I would think that having that as a YANG data type would be good, but
>> of course I have no opinion whether this needs to be in 6991bis.
>
> Agreed.
>
> Regards,   Martin.
> .
>