David Corbett

I’ve submitted feedback to Unicode asking for clarification. >Section 5.21 says that “a format character may have no visible effect on display at all”, with the example of . There...

Using `O` there does indeed go against the spec. See #3249 for why I disagree with the spec. Unicode recommends U+00A0 as the base for isolated combining marks. It used...

It’s best to keep them consistent.

A font can currently distinguish between a dotted circle present in the input and a dotted circle inserted by the shaper. If the shaper’s cluster model is wrong, the font...

Does DirectWrite apply the language system’s required feature before inserting dotted circles?

If dotted circles are inserted after 'HARF', that would be good enough for HarfBuzz. There’d still be the problem that fonts that need to detect inserted dotted circles would only...

Since the spacing vowel signs U+1A61, U+1A63, and U+1A64 cannot follow a sakot, GB would be a more appropriate category than B. USE now overrides U+1A7B TAI THAM SIGN MAI...

[L2/19-365](https://www.unicode.org/L2/L2019/19365-tai-tham-structure.pdf) maps U+1A60 TAI THAM SIGN SAKOT to H instead of the bespoke category Sk. Should #1731 be reverted?

I can do a proper review in a couple weeks, but this proposal seems like a plausible approach. There isn’t any concrete alternative proposal, so I guess we should implement...

What’s the issue? You like the behavior of 'kana' but you would prefer to call it 'hrkt' instead? I don’t see the point. Or do you mean that code points...