[XeTeX] Support of variable OpenType fonts

Philip Taylor (Hellenic Institute) P.Taylor at Hellenic-Institute.Uk
Wed Jul 13 19:46:01 CEST 2022

On 13/07/2022 18:05, Bruno Voisin via XeTeX wrote:

> If anybody wishes to take on that task, here's another possible item for the todo list: the support of colour emoji fonts.
> I have not tried with other emoji fonts, but Apple's font (Apple Color Emoji.ttc in macOS) is supported by LuaHBTeX in Harf mode, but not XeTeX.
> Overleaf has a very nice technical article on TeX's support of emojis
> https://www.overleaf.com/learn/latex/Articles/An_overview_of_technologies_supporting_the_use_of_colour_emoji_fonts_in_LaTeX
> discussing in detail why XeTeX doesn't support them (ie lack of support of raster-based OpenType colour fonts).
> It would be nice if somebody were able to overcome that obstacle.

May I /very/ respectfully suggest that while support for colour emoji 
fonts may well be of interest to some, it would be more in the spirit of 
TeX to invest that effort into attempting to support the technology that 
underlies Zapfino Ink <https://tug.org/TUGboat/tb28-2/tb89hagen.pdf>.

/Philip Taylor/

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