There are some new css properties included in MathML, correct? Then one
possibility for feature detection could be to provide developers the
ability to use CSS @supports inside print media stylesheets to determine
whether MathML is available in that context.
<link href="print.css" rel="stylesheet" media="print">
@supports (display: math) { /* or other MathML property */
/* not applied in Chromium */
}
<link href="screen.css" rel="stylesheet" media="screen">
@supports (display: math) { /* or other MathML property */
/* applied in Chromium and other browsers */
}
On Friday, July 8, 2022 at 2:54:36 PM UTC-4 Neil Soiffer wrote:
> I don't mean to diminish the importance of print -- I'm old enough that I
> *occasionally
> *print things out. However, the situation now is that neither display nor
> print of MathML works natively in Chromium. In turning on MathML display,
> 99.99% (or more?) people will be happy to have fast display of math; some
> small number of people won’t be happy when they try to print it out.
>
> For that group and the publishers that put out material that tests whether
> MathML is available in the browser, this would be a regression. It would be
> interesting to know if any sites sniff for MathML support, or whether they
> simply look at the browser and decide based on their knowledge of support.
> I know of at least one site that does the latter and so they wouldn’t
> suffer a regression. Maybe all the sites do this because it is easy and
> reliable? Even if there is no regression, please don't put printing math on
> the back burner in terms of priorities.
>
> Benjamin mentioned Wikipedia. I can’t speak for what Wikipedia would do,
> but as long as they know that printing is broken in Chromium, any
> decision to turn on direct MathML rendering is their call, not Chromium’s.
> I suspect given their concern that Wikipedia renders properly almost
> everywhere, it will be a long time before they make a switch. Right now,
> despite Firefox’s long support for MathML, they still use SVG with hidden
> MathML on it.
>
> On the supposition that there are some sites that sniff for MathML, I
> think Benjamin’s suggestions are good. I don’t know how feasible it is to
> put up a dialog stating that printing math is not currently supported in
> Chromium, but doing that with some suggested workarounds would I think be a
> viable alternative until print is supported. One workaround would be to
> suggest they download an extension (that would need to be written) that
> loads MathJax into the page in question when clicked. Another suggestion
> could be to read the page with Firefox ;-). I’m sure there are many more
> clever people on this list than I am who might have other suggestions for
> workarounds.
>
> My suggestion is to follow the somewhat worn out but still very true
> trope: "don't let perfect be the enemy of the good". People have been
> waiting years and years to get math to display natively in Chromium and now
> it is ready to happen. Please try to find a simple stopgap and get this
> long awaited feature turned on.
>
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