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   RE: [xml-dev] Illegal Characters in Namespace URIs

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At 10:00 AM +0200 6/17/02, Julian Reschke wrote:

>Well, in this case we should care. I know of at least one XML application
>that *does* validate namespace names (Jim Clark's JING).

And I can add another. JDOM at least tries to do this, though 
currently that code is broken. And I'm working on a third myself, 
which is why I bumped across this.

I agree that URI conformance should be a requirement. I think it 
could probably be made so in Namespaces 1.1 without any great effort. 
The simplest way would be to add a namespace constraint specifying 
that the value of a namespace declaration attribute must be a legal 
RFC 2396 URI reference.

The question for me is whether this is a small enough and obvious 
enough change that it could plausibly be made an erratum to 1.0. A 
little to my surprise, Dare pointed out one major public case 
(WebDAV) where the actual namespace name was in fact not a URI 

Julian Reschke pointed out that there was a different loophole WebDAV 
could use, based on a future version of RFC 2396. Of course, the 
namespaces spec references 2396 only, not 2396 and its successors. :-(

Not that the namespaces errata are models of backwards compatibility 
and small changes, but I do prefer to be very conservative in what's 
classified as an erratum. I feel this change is just a little too big 
to be justified as an erratum. I think it needs to wait for 
Namespaces 1.1.


| Elliotte Rusty Harold | elharo@metalab.unc.edu | Writer/Programmer |
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