New RTL math support in MathML Core / Chromium browsers

Hello,

As some of you probably know, last year Harry Chen had experimented RTL 
math support in Chromium as part Igali's Coding Experience Program. This 
is just a heads up that I merged his spec changes last week. My 
colleague Eri took over the work and landed a patch in Chromium.

You can find the explainer and Chromium's intent to prototype here:

https://people.igalia.com/fwang/mathml-operator-mirroring-explainer.html

https://groups.google.com/a/chromium.org/g/blink-dev/c/iU0jQWJZCEM

Support is available in the latest Chrome Canary if you enable 
experimental web platform features from about:flags (see attached 
screenshot).

WebKit operator mirroring is known to be quite limited. Firefox has some 
implementation, but we noticed it currently has some issues. So we will 
make progress on them before sending the intent to ship to Chromium.

Frédéric Wang

Received on Tuesday, 22 July 2025 09:39:42 UTC