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RE: Contradiction about attributes on mglyph

From: Robert Miner <robertm@dessci.com>
Date: Thu, 29 Nov 2007 19:13:42 -0800
Message-ID: <D1EFB337111B674B8F1BE155B01C6DD60116993E@franklin.corp.dessci>
To: "L. David Baron" <dbaron@dbaron.org>, <www-math@w3.org>
Hi Dave,

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.

--Robert

Dr. Robert Miner
Vice President, Research and Development
 
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-----Original Message-----
From: www-math-request@w3.org on behalf of L. David Baron
Sent: Thu 11/29/2007 5:37 PM
To: www-math@w3.org
Subject: Contradiction about attributes on mglyph
 

http://www.w3.org/TR/2003/REC-MathML2-20031021/chapter3.html#id.3.2.9.2
says:

  mglyph elements accept the attributes listed in Section 3.2.2
  Mathematics style attributes common to token elements, and the
  additional attributes listed here.

However, if you follow the link to section 3.2.2:
http://www.w3.org/TR/2003/REC-MathML2-20031021/chapter3.html#presm.commatt
it says:

  These attributes are valid on all presentation token elements
  except mspace and mglyph, and on no other elements except mstyle.

Are these attributes (mathvariant, mathsize, mathcolor, and
mathbackground) valid on mglyph or not?

-David

-- 
L. David Baron                                 http://dbaron.org/
Mozilla Corporation                       http://www.mozilla.com/
Received on Friday, 30 November 2007 03:13:56 GMT

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