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Re: [xml-dev] Towards XML 2.0

Appealing to tool support makes me nervous.  Why doesn't the current
comment model work perfectly if the editor is really smart?

On Mon, Dec 6, 2010 at 11:21 AM, David Carlisle <davidc@nag.co.uk> wrote:
> On 06/12/2010 00:08, Michael Kay wrote:
>> I was assuming that if <xml:comment> were chosen to represent comments,
>> its main (perhaps only) difference from other elements would be that it
>> would be ignored for validation purposes - i.e it's not under schema
>> control.
> You say "other elements" but wouldn't you want it to generate a comment node
> rather than an element node, so not be selected by xpath * for example?
> If you have a schema that says every child of x is y, and a valid input, I'd
> have thought that you'd want to know in advance that everything selected by
> x/* was a sequence of y nodes. If xml:comment generates element nodes that
> are ignored on validation, this assumption would be false.
>> I've been interested to read people's views that comments should be
>> allowed to contain "non-well-formed" content. It's a worthwhile point,
>> but I don't find it compelling. The editing tool that creates the
>> comment can always escape any markup within the comment.
> Commenting is the easy bit, but if the editing tool is to also able to
> uncomment regions, then it needs to fix up broken markup, or not allow you
> to uncomment or allow you to generate non well formed document or something.
> David
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