Hi all,

I have a mentioned term in a document in "Neo-Brittonic" which is I
believe a neologism for (reconstructed) Brythonic, the ancestor language
of Welsh, Cornish, and Breton. There does not appear to be a current
language code for Brittonic or Brythonic. And Linguisti List doesn't
seem to have one either.

What is best practice in such cases if you are trying to identify
languages on the xml:lang attribute? My understanding is that I should
create a private use value for xml:lang (perhaps x-br, since I can't
find anything) and then document this in

Is this right? The relevant sections of the guidelines are §2.4.2
( and §
vi.i (
The language codes at at

I've checked the archive, and while there is some discussion of the
language codes, I didn't see anything definitive that applies to the
current standards.

Daniel Paul O'Donnell, PhD
Associate Professor of English
Director, Digital Medievalist Project
Chair, Text Encoding Initiative

Department of English
University of Lethbridge
Lethbridge AB T1K 3M4
Vox +1 403 329-2377
Fax +1 403 382-7191
Email: [log in to unmask]