[XeTeX] MathTime fonts

[Jonathan Kew]

On 4 Sep 2004, at 8:37 pm, Bruno Voisin wrote:

> The problem with LaTeX is (1) that LaTeX uses alternative font names 
> (Karl Berry's scheme) and (2) that its use of PostScript fonts through 
> the PSNFSS package is based entirely on virtual fonts, that XeTeX does 
> not handle. A possible solution would be to use not the default T1 (ie 
> Cork) encoding of LaTeX, but the alternative LY1 (ie TeX 'n ANSI) 
> encoding from Y&Y. An advantage of LY1 is that no virtual fonts are 
> required. Compare for example the two lines from psfonts.map:
>
> 	hlcbt8r LucidaTypewriterBold " TeXBase1Encoding ReEncodeFont " 
> <8r.enc <lbtb.pfb
> 	hlcbt8y LucidaTypewriterBold " TeXnANSIEncoding ReEncodeFont " 
> <texnansi.enc <lbtb.pfb
>
> The first line creates from LBTB a re-encoded font in TeXBase1 
> encoding, and the virtual font mechanism converts this font later to 
> one in T1 encoding (with metrics name ending in 8t). On the other 
> hand, for LY1 (corresponding to the second line), the reencoding is 
> done once and for good, and no virtual fonts are involved.
>
> But that, in any case, would only work in XeTeX if XeTeX could deal 
> with re-encoded fonts as specified in psfonts.map.

XeTeX does deal with re-encoded fonts as specified in psfonts.map, 
using .enc files, but ONLY if the .otf font includes a 'post' table 
that gives the glyph names. I don't believe simply converting 
.pfb->.otf with either FontForge or FontLab provides this; for the CM 
and other fonts that I bundle with XeTeX, I added the appropriate 
'post' table to the .otf fonts using Apple's font tool suite.

This is an area that still needs further work and proper documentation.

JK