[XeTeX] Nested \textit in an italic fontinstance

[Will Robertson]

On 13/09/2006, at 20:49 , William Adams wrote:

> It's exactly the behaviour I want when dealing with families like
> Helvetica Neue or Univers or Frutiger --- it's been on my list to
> play with for a while now....

Have you read my fontspec TUGboat paper? I've got vague plans in the  
future to support multiple bold fonts via some extension to the NFSS.  
At this stage, the syntax'll be something like
   \fontspec[
     LightFont=* UltraLight,
     LightFont=* Light,
     BoldFont=* Demi,
     BoldFont=* Bold,
     BoldFont=* Black,
             ]{MyFontName}
although no code has even been written yet :)
Then you'll have some sort of document syntax like
   \fontweight{+1}
   \fontweight{-1}
   \fontweight{Light}
but obviously nothing's set in stone.

I also wonder how to accommodate different widths, but I hesitate to  
add that to the mix as well. The range is never complete enough that  
you could move between them reliably except in rare cases (e.g.,  
having this result in an actual font every time:
   \fontweight{+1}
   \fontwidth{-1}
   \fontweight{-2}
   \fontwidth{-1}
   ...
) so I think weights alone it is.

Ciao,

Will
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