Re: New RTL math support in MathML Core / Chromium browsers

I had one question, independent of this superb achievement, related to
glyph rendering:

In many math symbols we have varying width strokes that look as though they
are stylistic imitations of using a chisel-edge pen.   In these, stroke
thickness depends on stroke orientation.

So the question is:  Does glyph mirroring provide rendering where the
strokes in square roots, etc,  are consistent with the kashida, ijam, etc
in fonts with varying stroke width?

Stephen

On Tue, Jul 22, 2025 at 8:31 AM Stephen Watt <smwatt@gmail.com> wrote:

> This is fantastic.   Yes, very hearty congratulations!
>
> Stephen
>
> On Tue, Jul 22, 2025 at 6:20 AM Deyan Ginev <deyan.ginev@gmail.com> wrote:
>
>> Hi all,
>>
>> Congratulations to Harry and Eri for landing this upgrade!
>> And best of success with your continuing MathML Core work.
>>
>> Greetings,
>> Deyan
>>
>>
>> On Tue, Jul 22, 2025 at 5:45 AM Frédéric Wang <fwang@igalia.com> wrote:
>>
>>> Here is the attachment.
>>>
>>> Le 22/07/2025 à 11:39, Frédéric Wang a écrit :
>>> > 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
>>> >
>>> >
>>
>>