[XeTeX] Combining NFSS fonts and OTF fonts with XeLaTeX and fontspec

[Will Robertson]

On 2009-06-09 20:51:26 +0930, "Zwam, S.H.M. van" 
<s.h.m.v.zwam at tue.nl> said:

> I want to use the "Charis SIL" font (actually, another font that I 
> intend to purchase, but let's keep things simple) for my regular text, 
> bold, and small caps, but the font specified by mathdesign for italic 
> and bold italic. These fonts are provided in my MikTeX installation, in 
> the folders
> 
> fonts\type1\bitstrea\charter\bchri8a.pfb

I wouldn't really recommend this approach. The problem is that your 
italic and bold italic fonts will be in a different encoding that the 
main text. So even if it were possible to set this up in fontspec (I 
think there might be some issues with the way ExternalLocation works 
that will prevent you from using it for the italic font only), I'm 
hesitant to try and support this sort of behaviour.

Having said all this, in Windows you should be able to install the .pfb 
font as a font recognised by the operating system and then follow 
Ulrike's advice. This is impossible in Mac OS X, unfortunately (.pfb is 
too antiquated for it).

Cheers,
Will