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CoreText doesn't support GSUB8 at all?!
Simon Cozens
Posts: 724
OK, this is going to cause me some serious issues.
Should I expect this to work? I feel like, since it's actually in the OpenType standard, it should really be supported, but...
$ cat foo.fea
languagesystem DFLT dflt;
feature liga {
rsub A' B by C;
} liga;
$ python3 -m fontTools.feaLib -o foo.otf foo.fea test.otf
$ hb-shape foo.otf 'AB'
[C=0+1292|B=1+1327]
$ hb-shape --shaper=coretext foo.otf 'AB'
[A=0+1296|B=1+1327]
Mac OS 10.15.7.Should I expect this to work? I feel like, since it's actually in the OpenType standard, it should really be supported, but...
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