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   Re: Questions on XML syntax and conformance issues

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  • From: David Brownell <david-b@pacbell.net>
  • To: Richard Tobin <richard@cogsci.ed.ac.uk>
  • Date: Wed, 08 Mar 2000 13:11:38 -0800

Richard Tobin wrote:
>	[ re EMPTY content model ]
> > And: if WS is allowed, how about comments or PIs?
> Looking at the spec, it appears not.  This seems a little surprising
> to me, since content models usually only restrict element and text
> content.

... and allow whitespace!  It'd be a lot simpler if EMPTY just
were interpreted to mean "no elements or #PCDATA allowed".  One
less special case to worry about.

On the other hand, none of the content model validity restrictions
mention comments or PIs.  It's safest to read that as meaning that
there are no restrictions ... else every implementor would write
their own proprietary set of restrictions.

- Dave

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