https://bugzilla.wikimedia.org/show_bug.cgi?id=70206

Frédéric Wang <fred.w...@free.fr> changed:

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--- Comment #3 from Frédéric Wang <fred.w...@free.fr> ---
Created attachment 16320
  --> https://bugzilla.wikimedia.org/attachment.cgi?id=16320&action=edit
Testcase

Here is a (valid HTML5) testcase to give the idea. Actually, the two <img>
fallbacks can be in the same annotation-xml so that Blink will only display one
by default.

A significant advantage of using this approach is that if we remove the style
of the page (disabled by the user, copy into another document etc), Gecko,
WebKit and recent versions of Blink will still display only one formula.
Trident will still show the three MathML/SVG/PNG versions, though (the IE team
rejected my proposal of annotation-xml for the next release).

A difficulty with that approach is the vertical/horizontal alignment of the
fallback image (for which I believe we have problems/doubts anyway), but that
should be studied more carefully.

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