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Re: Linking (chapter 6.4.3) probably underspecified

From: David Carlisle <davidc@nag.co.uk>
Date: Tue, 13 Apr 2010 15:54:29 +0100
Message-ID: <4BC485A5.4070607@nag.co.uk>
To: Christoph LANGE <ch.lange@jacobs-university.de>
Cc: "www-math@w3.org" <www-math@w3.org>
On 13/04/2010 15:23, Christoph LANGE wrote:
> With<mo>  that works fine, using @xlink:href (Gecko does not
> yet support @href.)

what version?  xlink support has been disabled since FF3, see


unless this got fixed in some new release without being logged in bugzilla??

As for your main point about nested links. I fear that the only thing 
that the spec could say is that you should not nest links, although the 
schema does not enforce it. That would match the behaviour for  html 
(and xlink simple links) xhtml extended links would support more exotic 
link times but they are largely unimplemented.

In a browser context especially it would be difficult to specify linking 
behaviour too different from the html linking behaviour and HTML
(certainly html4 I failed to find an exact reference in html5) any 
nested link elements are formally a syntax error.

Ie I think we could perhaps change

However, links on elements that do not correspond to any part of a 
visual rendering should be avoided


However, links on elements that do not correspond to any part of a 
visual rendering, and nested links,  should be avoided

this doesn't leave things completely specified or help with your actual 
use case, but may the best way for the specification to mention the 
problem leaving the door open for some implementations to offer you 
support, but without mandating that.

(personal response: we'll discuss this at the regular teleconference on 

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Received on Tuesday, 13 April 2010 14:55:07 UTC

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