ISSUE-23: contradictory mglyph attributes

contradictory mglyph attributes

State:: OPEN
Product:
Raised by:: Ron Ausbrooks
Opened on:: 2008-01-17
Description:: http://lists.w3.org/Archives/Public/www-math/2007Nov/0016.html

Dave Baron notes that there are contradictory statements about whether (mathvariant, mathsize, mathcolor, and
mathbackground) are valid attributes on mglyph or not?

Robert answered:

"Tough question, but I believe 3.2.9.2 is in error and 3.2.2 is correct.

The DTD only allows "alt", "fontfamily" and "index" which seems a little dubious to me as well, since I think is should probably also allow the MathML common ones as well (e.g. id, xref, other, etc.) But at any rate it argues against allowing (mathvariant, mathsize, mathcolor, and mathbackground).

In MathML 3, we are thinking of allowing mglyph to load an image as well, since in practice, that is much more practical for most situations than trying to pull a glyph out of a font with a non-standard encoding. Provided we do that, then I think is is fairly clear that the mathvariant, etc attributes would make no sense.

I think there has been very little implementation of mglyph, so there isn't a clear answer to be found there."
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