> On Oct 24, 2017, at 12:14 AM, Frédéric WANG <fred.w...@free.fr> wrote: > > On 23/10/2017 18:11, Maciej Stachowiak wrote: >> >> Is there any way we can convert MathML to a runtime switch? It seems >> like the main consideration is rendering quality given available >> fonts, rather than code size. >> >> Regards, >> Maciej >> > @Maciej: > > As I explained, I don't think disabling a HTML5 feature to determine > which kind of fallback content will be delivered to the user is a good > idea. Authors can provide Web fonts and for very elementary math (e.g. > using only simple fractions) you even do not need math fonts at all.
I don't have a strong opinion on whether we should support disabling MathML. My point is just that if we support disabling it, it should be a runtime switch, not compile-time. Good reasons to have a compile-time switch would be: - Some ports want the code size savings - It requires back-end code that is not available on all ports But neither of those is true. On the other hand, we might still want a runtime switch if some ports would like to disable the feature for reason of compatibility based on available fonts. I think it's up to port owners to say whether they want to disable the feature for this reason. > > Anyway, replying to your question the Tor project also added run-time > preferences for MathML and SVG in Gecko last year: > > https://hg.mozilla.org/mozilla-central/rev/0d48c28cc547 > https://hg.mozilla.org/mozilla-central/rev/7b09464eb767 > > IIRC, they basically move the MathML/SVG elements in "unknown" > namespaces so that the MathML/SVG content and layout classes are not > used to process them. I believe we could do the same for WebKit. Note > that their justification is security (users intentionally disable HTML5 > features to "reduce attack surface area") so it's a different use case > and that one does not make sense to me. To be clear, I'm not necessarily suggesting a flag exposed to end users. That would be weird. > > In any cases, I do not think adding an runtime option for MathML/SVG is > a prerequisite to remove the build-time option, as the latter was more > about reducing binary size/dependencies for web engines developers while > the former was about providing more control to users. > > -- > Frédéric Wang - frederic-wang.fr > > _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org https://lists.webkit.org/mailman/listinfo/webkit-dev