[css-writing-modes] feedback: bottom-to-top scripts?

Hi there,

The current draft of the CSS Writing Modes specification states:

"Inherently bottom-to-top scripts are not handled in this version. See 
[UTN22] for an explanation of relevant issues."

However, I can't find in UTN 22 any justification for the omission of 
bottom-to-top scripts; UTN 22 in fact includes:

ltr-btt
 Left to right directionality in horizontal text; Bottom to top
 directionality  in vertical text. (Bi-orientational script)
 Example: Ogham.

Other bottom-to-top scripts exist (such as Ancient Berber).

I'm therefore a little puzzled by the decision to exclude bottom-to-top 
from CSS Writing Modes. Is it simply because the range of use-cases is 
so narrow, so the implementation burden placed on user-agent developers 
was not felt to be justifiable?

Cheers,
Martin
-- 
Martin Holmes
University of Victoria Humanities Computing and Media Centre
(mholmes@uvic.ca)

Received on Wednesday, 9 October 2013 12:00:47 UTC