Ship SBIX emoji fallback font

[jryans]

We're seeing some configurations (#9891 and elsewhere in chat) that don't support COLR fonts, leading to a bad emoji experience, especially if you also don't have a native font either.

We should be able to remedy this by also shipping a SBIX variant of our emoji font, since that format has wider support.

[lampholder]

Are we actually moving forward with this? Is the first step for Matthew to fork the mozilla script to make it also generate SBIX? Is that something somebody other than Matthew could do?

[ara4n]

i've already forked the script to fix mozilla/twemoji-colr#50. i would be working on it right now if i hadn't been hijacked. someone else could go and add the thing to the script to blat out a PNG and change the TTX to point to the the PNG in a SBIX, probably cribbing off https://github.com/RoelN/ChromaCheck/blob/master/src/chromacheck-sbix.ttx as an example of what SBIX TTX looks like.

[ara4n]

and yes, we should absolutely move fwd on it.

[jryans]

Is your patch in mozilla/twemoji-colr#50 literally the only change so far? (Should we fork the font into our org and continue from there?)

[ara4n]

yup and yup.

[ara4n]

should be fixed by matrix-org/matrix-react-sdk#3050

[jryans]

matrix-org/matrix-react-sdk#3050 has merged to develop.