compare AAT vs OT fonts

googlefonts / fontdiff

tool for finding visual differences between two font versions

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compare AAT vs OT fonts #29

Open MayuraVerma opened 6 years ago

MayuraVerma commented 6 years ago

Apple system fonts have both AAT and OT feature tables in them.

Can we compare single font against its AAT and OT feature tables?

brawer commented 6 years ago

Once fontdiff gets updated to use the most recent HarfBuzz (with AAT support enabled), you could derive two test fonts from the original input font, eg. with fonttools. One font would contain just the AAT tables; the other just OpenType. Would that work for you?

MayuraVerma commented 5 years ago

yes possibly.

but in apple fonts, one font contains both OT n AAT feature.

in the fontdiff can we specify OT vs AAT within one font?