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Re: [xml-dev] Towards XML 2.0

Two "easy test" answers in explaining  compatibility to a "newbie"  - hopefully not too simplistic or optimistic, and not necessarily complete:
1.  If a new XML has a broad enough foundation set, then much of what exists should be translatable (but maybe ugly).
2.  If the new XML is indeed extensible, then, for a module (whatever that is), it should be possible to specify a syntax (i.e. a parser that produces infosets) and a semantics (i.e. a standard or process that recognizes and can handle the resulting infosets). 
Clearly compatibility is a driving requirement, and these and other considerations are fundamental and necessary.  Compatibility should dictate that all that is possible with at least two commercial browsers is supported in some manner.  Simplicity is an immediate goal for developers.  Browsers are stuck with the past, but goals of extensibility and long term simplicity are useful for browsers.
In a message dated 12/4/2010 9:27:34 A.M. Eastern Standard Time, davep@dpawson.co.uk writes:
On Sat, 4 Dec 2010 09:09:49 -0500
Elliotte Rusty Harold <elharo@ibiblio.org> wrote:

> > I think the XML 2.0 spec should have a 'Compatibility' section in
> > it that says if you want your XML 2.0 document to be valid XML 1.0,
> > then take note of the following ... .  One of the things it would
> > mention is comments.
> That's certainly worth considering. Perhaps there should be two
> levels? a basic level with no XML declaration that is XML 1.0

Easy test, how easy would that be to explain to a newbie?
Surely if you want XML 1.0, use it. The new work should remain new
and kept that way?

Certainly worth an explanatory section saying what is/isn't backwards



Dave Pawson


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