[XeTeX] Charis SIL glyph variants

[Will Robertson]

On 18/11/2008, at 10:24 PM, Jonathan Kew wrote:

> Yes - the interface is a lot like that for AAT features, with the font
> providing human-friendly names. They also have underlying numeric IDs,
> but there's no general "registry" of these, like there is for (some)
> AAT features. I presume the feature IDs are consistent across the
> various extended-Latin fonts from SIL, for instance, but beyond that I
> don't think you can assume anything. It's up to authors to specify the
> names that their fonts support.

That's what I feared. There shouldn't be a technical problem with  
supporting this, of course, but the lack of any sort of organisation  
scares me a little bit :)

(I think the AAT method is best, where a back-end can query and set  
known features, but where the user interface at the font level is  
readable and extensible.)

I should know this already...but is there an equivalent of OpenType- 
info.tex for Graphite fonts? Anything you've got lying around would  
make things easier for me... :)

W