Is there any information about optical sizes in the OpenType fonts used
by LilyPond?
And if not, would it be complicated to add this?
To explain:
I have an Adobe OpenType font family containing its font faces in four
sets: text, caption, subhead and display, each set designed for use at
different point sizes.
I assume the different Emmentaler-nn fonts serve the same purpose.
If I use this Adobe font with LaTeX and fontspec it selects the right
font automatically depending on the point size.
E.g. if I write \scriptsize aText \huge anotherText LaTeX uses two fonts
from the caption and the display set.
Is there something similar in the Emmentaler fonts or could this be
easily included?
I opened both fonts with FontForge but didn't find a setting that seems
responsible, and I don't really know anything about the inner workings
of OpenType (or any) font technologies.
However, I have to tell fontspec explicitely which Emmentaler font to
use, I can't do anything like \fontspec{Emmentaler}.
Would it make sense to add this?
Or would it be an improvement that LilyPond (itself) doesn't need?
Best
Urs
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