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Publisher v. 2.0 on a MacBook Pro (M1 2020) with macOS 11.7 (20G817)

Hardware acceleration is on and has no effect.

In fonts which have a 'GPOS type 8 chaining contextual lookup' within the kern feature, as is required for kerning tripplets such as <f, T>, no kerning data provided by the font is displayed by the app. If required, I can provide examples directly via email. Also for fonts which have only an old-style kern table no kerning is read from the font. As an example you can use the version of Optima that is included in MacOS.

Whereas the old-style kern table is a legacy format, support of system fonts should be provided.

The use of 'GPOS type 8 chaining contextual lookups' within the kern feature is in line with the OpenType specification and should be catered for by a professional layout app.

For reference see also:




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  • 1 month later...
  • Staff

As it happens, we do currently support simple kern pairs in the 'kern' table, but only the cross-platform version 0 variant. Optima uses version 1, which is Apple-specific. We'll add support for that in a future release.

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