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Re: [SVGMobile12] SVGT12-207: Behaviour of <a> pointing into same document outside SVG document fragment is not defined

From: Chris Lilley <chris@w3.org>
Date: Sat, 10 Dec 2005 03:52:05 +0100
Message-ID: <998079140.20051210035205@w3.org>
To: Ian Hickson <ian@hixie.ch>
Cc: www-svg@w3.org

On Saturday, December 10, 2005, 2:13:37 AM, Ian wrote:

IH> On Sat, 10 Dec 2005, Chris Lilley wrote:
>> On Saturday, December 10, 2005, 12:17:29 AM, Ian wrote:
>> IH> Section 14.1.3 Reference Restrictions lists five options (A-E). One
>> IH> option that does not appear to be listed as a possible option is for a
>> IH> link to point to an element inside the same XML document but outside
>> IH> the current SVG document fragment.
>> Yes, there are no elements in SVG Tiny 1.2 that have that particular
>> restriction [...]

IH> In that case please clearly state this in the specification. As it stands
IH> today it is unclear (I was in fact confused as to whether, for example, an
IH> <a> element linking to an element outside the SVG fragment would be 
IH> unsupported or allowed -- the specification simply does not cover this 
IH> case at the moment).

>> If a particular element is restricted to linking to somewhere in the 
>> current SVG document fragment and it links outside it, then it has 
>> clearly not met the restriction.

IH> This does not address my issue. There are other cases than the one you 
IH> list. This is really a simple issue, the spec claims to list all the 
IH> possibilities but does not, and therefore has an ambiguity. It should be
IH> easy to fix.

No, the spec lists all the reference restrictions, ie constraints, that
are placed on IRIS for those elements that make links of some sort. That
is why the secton has the title "14.1.3 Reference Restrictions".

It doesn't list constraints that we don't make. It doesn't claim to list
all possible constraints that might exist somewhere in some other spec
but are not in fact used in this spec.

However, I can see that you might have been misled by this text in the
second paragraph of that section

"The following possibilities exist in SVG. A referencing element
supports one or more of these possibilities."

This would be better as

"The following reference restrictions exist in SVG. A referencing element
may be subject to one or more of these restrictions.

 Chris Lilley                    mailto:chris@w3.org
 Chair, W3C SVG Working Group
 W3C Graphics Activity Lead
 Co-Chair, W3C Hypertext CG
Received on Saturday, 10 December 2005 02:52:13 UTC

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