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* font feature
@ 2021-07-08  7:46 Thomas A. Schmitz
  2021-07-08 21:33 ` Hans Hagen
  0 siblings, 1 reply; 3+ messages in thread
From: Thomas A. Schmitz @ 2021-07-08  7:46 UTC (permalink / raw)
  To: mailing list for ConTeXt users


Hi all,

is it possible to subtract a featureset that has been applied to a 
fontfamily? MWE:

\definefontfeature
   [f:frac]
   [frac=yes,onum=no,pnum=no]

\definefontfeature
   [f:onum]
   [onum=yes,pnum=yes]

\definefontfamily [test] [serif] [AntykwaTorunska] [features=f:onum]
\definefontfamily [test] [sans]  [Myriad Pro]
\definefontfamily [test] [mono]  [DejaVu Sans Mono]
\definefontfamily [test] [math]  [Xits Math]

\setupbodyfont[test,12pt]

\starttext

Mozarts erster Satz ist ein
{\subtractfeature[f:test]\addfeature[f:frac]4/4}-Takt, Beethoven wählt 
einen Dreiertakt, Mozarts Romanze ist ein 3/8-Takt, Beethoven wählt 
einen 2/4,
Mozarts Rondo ist eine Gavotte im 2/2-Takt, Beethoven schreibt ein 
Jagdrondo im 6/8-Takt.

\stoptext

If I comment out the part [features=f:onum], I get the fractions that 
I'm looking for, but it seems that I can't get the same effect with 
\subtractfeature and \addfeature. I'm confused...

Thanks and all best

Thomas
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2021-07-08  7:46 font feature Thomas A. Schmitz
2021-07-08 21:33 ` Hans Hagen
2021-07-09  8:04   ` Thomas A. Schmitz

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