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Re: Combining marks advance width
Marks are usually non-spacing (zero advance width), as they just belong to the base character without changing the space occupied by the combination. This article about how to go beyond precomposed c…1 -
Re: zz## OpenType features
We consider those as production tables for VOLT which should not end up in release versions of fonts. If this is a false assumption let us know.1 -
Re: Composite glyphs
Even if you decide not to include mark attachment lookups, it is still beneficial to use anchors to position marks. We have a tutorial, aimed at FontCreator but also works with most other professiona…1 -
Re: Replacing a glyph with itself + other glyph
Nothing wrong with it, and it works in Windows, Firefox, Edge, etc.1 -
Re: Apple SF Fonts on Windows
I'm not sure if you're allowed to use them on Windows, but they probably don't conform to the specs. I suggest you run the fonts through Font Validator to reveal potential issues.2
