[luatex] otf fonts (ligatures, cache, etc.)

[Hans Hagen]

Karl Berry wrote:
>     for example 1/4 (I'm sure there are more pertinent examples 
> 
> For example, "ffi" and "ffl" are standard ligatures in English.
> 
>     Also, how should I handle font cache? For example when I ask to load the 
>     same font (with same options) with different size, 
> 
> I was curious about that particular case myself.  Does OpenType have any
> concept of non-linear scaling?  Can SomeFont.otf give a
> differently-designed result when loaded at 5pt than 10pt, a la cmr5
> vs. cmr10?  Or does it have to be two different otf files?

there can be multiple sizes in one font (which is done in for instance 
cambria math)

Hans

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