From: Frédéric WANG <fred.wang@free.fr>

Date: Mon, 29 Oct 2012 21:23:08 +0100

Message-ID: <508EE5AC.2070505@free.fr>

To: "www-math@w3.org" <www-math@w3.org>

Date: Mon, 29 Oct 2012 21:23:08 +0100

Message-ID: <508EE5AC.2070505@free.fr>

To: "www-math@w3.org" <www-math@w3.org>

Hi, I have some questions about the correct implementation of semantics, discussed on the Webkit bug tracker: https://bugs.webkit.org/show_bug.cgi?id=100626 So the correct behavior is basically to use the first child as the default rendering and find possible alternate renderings among the annotation children. Some questions: 1) Does the following implementation make sense for a browser without Content MathML support: - Test if the first child is a presentation MathML element and if so, display it. - Otherwise, read the list of other children in that order and display the first <annotation-xml> with a known encoding ; or a plain text <annotation> if one is found. 2) I think the first child can only be presentation / content MathML. But does that means that an <annotation> or an <annotation-xml> (which are MathML elements) can be used as the first child (to include SVG or HTML descendants for example)? 3) What are the official encoding values other than MIME content-type? The REC mentions "Content-MathML", "Presentation-MathML" for backward compatibility. The W3C note http://www.w3.org/Math/Documents/Notes/graphics.xml#svg-in-mathml-guidelines also contains the "SVG1.1" value, but is it official? 4) The spec says that <semantics> is an embellished operator if the first child is one. But should we actually consider the visible child (as we do for maction)? -- Frédéric Wang maths-informatique-jeux.com/blog/fredericReceived on Monday, 29 October 2012 20:21:26 GMT

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