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Re: landing harfbuzz branch (Re: Status of multicolor fonts?)

From: Eli Zaretskii
Subject: Re: landing harfbuzz branch (Re: Status of multicolor fonts?)
Date: Sun, 05 May 2019 19:02:11 +0300

> Date: Sun, 5 May 2019 08:42:58 +0900
> From: address@hidden
> Cc: address@hidden
> >> Date: Fri, 3 May 2019 18:59:26 +0900
> >> From: address@hidden
> >>
> >> The attached patch is against the harfbuzz branch, and it adds
> >> `xfthb' and `ftcrhb' backends that use HarfBuzz for shaping.  I
> >> also tried adding the `mac-cthb' backend, but it is not included
> >> in the patch.
> >
> > Thanks!  Please push to the harfbuzz branch, I'd like people to try
> > this and report feedback.
> Done.


> >> With the `ftcrhb' font backend, one can now display regional flag
> >> emojis:
> >
> > What would we need to be able to display those emojis in the xfthb
> > backend?
> Xft does not support multicolor fonts, but text shaping itself
> will work for the xfthb font backend and monochrome fonts that
> support emoji flag sequences.  At least, "Noto Emoji" (not "Noto
> Color Emoji") seems to work.

You mean Xft cannot access the attributes of color fonts that are
needed to display color emoji?  Does HarfBuzz itself have interfaces
which could allow to access those attributes?

Or is the Xft problem something else?

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