[HarfBuzz] [docs][question] Emoji "shaping", etc.

Behdad Esfahbod behdad at behdad.org
Tue Oct 2 10:45:19 UTC 2018

On Mon, Oct 1, 2018 at 4:05 PM, Nathan Willis <nwillis at glyphography.com>

> Kind of a high-level question about describing HB functionality....
> Would you consider the handling of emoji variation-selector sequences to
> be "shaping", or some other operation?

Yes. They can and do use the existing substitution and positioning features
in fonts, so that's shaping.

> Feels like kind of a gray area to me; when it comes to describing what
> HarfBuzz does and what the use cases are that developers need it for,
> though, it's important to get it right. So I'd like to know what the
> consensus is....
> [Related question also applies to handling the MATH table -- AIUI,
> HarfBuzz leaves math layout to others higher up in the stack, so I wouldn't
> call math-table support "math shaping", but other people may see it
> differently...]
> Thanks,
> Nate
> --
> nathan.p.willis
> nwillis at glyphography.com <http://identi.ca/n8>
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> HarfBuzz at lists.freedesktop.org
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