For that, I'd suggest und-Latn (or whatever the script is). Since only
languages would have scripts, that is sufficiently determinate.
On 4/12/07, Martin Hosken <martin_hosken@sil.org> wrote:
>
> Dear All,
>
> >> Q1. What tag should be used where it is definitely a language, but
> there
> >> is no code available yet? (This is an area where ISO 15924 is ahead
> >> of ISO 639 (and 3166), since it has Zzzz: Code for uncoded script.)
> >>
>
> A related question is how to tag text that is definitely in a language
> but I don't know what the language is. (But I might know the script).
>
> Yours,
> Martin
>
>
--
Mark