[Ogg a11y] Milestones 1&2 for video accessibility project

[Silvia Pfeiffer]

On Thu, Nov 27, 2008 at 10:49 PM, ogg.k.ogg.k at googlemail.com
<ogg.k.ogg.k at googlemail.com> wrote:
>> So, Unicode characters have an intrinsic (or default) directionality?
>
> Some, but not all, have an intrinsic directionality. AFAIK, this can be
> either strong or weak. Directionality of neutral characters is deduced
> from that of surrounding others. If all are neutral, that's the only case
> where you don't know.
>
>> But I guess not every charset defines intrinsic directionalities for
>> its characters.
>
> This directionality applies to code points, whatever their encoding
> (UTF-8, UTF-32, etc). If it's not Unicode, then I do not know a rule
> but would guess it's on a case by case basis. Still, I would hazard
> a guess that every charset can be mapped to Unicode, and thus
> we can (theoretically) find which directionality each character has.
> Theoretically being the key word here. Might need huge tables.


You're talking about automatically finding out what default
directionality a text codec has? It would be great if that was
possible. But where it's not possible, we can always get user input to
clarify the unknown case, I would say.

Cheers,
Silvia.