[XeTeX] Use of Apple Symbols font in XeLaTeX

[Jonathan Kew]

On 17 Sep 2004, at 1:27 pm, Bruno Voisin wrote:

> Le 17 sept. 04, ˆ 12:55, Jonathan Kew a Žcrit :
>
>> Does Omega include an extended \mathchar, by any chance? That might 
>> provide a model for what should be done, but at present I don't think 
>> you can encode character codes > 255 in a \mathchar.
>
> I think that Omega does this, though I cannot say more, not being an 
> Omega user myself. From 
> /usr/local/teTeX/share/texmf.tetex/doc/omega/base/doc-1.12.ps, p. 6:
>
> ½, on the other hand, allows 256 (2^8) font families, each font of 65 
> 536 (2^16) characters. So, in addition to the TEX math font 
> primitives, which continue to work, there are 16-bit versions:
> [...]
> ¥ \omathcharmath code;
> [...]
> where
> [...]
> ¥	Ð 3 bits for math category,
> 	Ð 8 bits for font family,
> 	Ð 16 bits for character in font,
> called a math code;
>

OK, so there's an \omathchar that is an extended version of \mathchar, 
it seems. I haven't incorporated this into XeTeX, but I'll look into it 
when I get a chance. I suspect what we'd need is to add full support 
for .ofm (extended .tfm) files, etc., in order to get metrics for such 
characters; merely allowing 16-bit character codes without providing 
all the math-related metrics for them will not work.

Meanwhile, glad you've figured out a workaround for your immediate 
needs.

JK