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

[Will Robertson]

On 2009-06-09 18:28:47 +0930, Peter Dyballa 
<Peter_Dyballa at Web.DE> said:

> Am 09.06.2009 um 08:44 schrieb Will Robertson:
> 
>> Are you sure this works? If so, it's a fluke, and might not work in  
>> the future. Font features should be activated with ItalicFeatures= {}, 
>> and so on.
> 
> Yes, for this particular Mac OS X font it works.

You shouldn't try to use XeTeX font feature commands in association 
with fontspec fonts. Instead of
    [...] ItalicFont={HiraMinPro-W3:+ital} [...]
write something like this instead:
    ItalicFont=HiraMinPro-W3,ItalicFeatures={RawFeature=+ital}

The reason being that fontspec will often try to prepend XeTeX font 
options to the font name, such as /B to get bold italic or /ICU when 
selecting the renderer. If you're loading an external font then the 
whole thing will be wrapped in square brackets. None of these will work 
properly if you've got ":+ital" after the font name itself.

Having said all this, I could consider parsing the fontname and moving 
any XeTeX font features into the RawFeature field automatically. Would 
this be useful, do you think?

Will