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   Re: More CDATA questions

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  • From: David Brownell <david-b@pacbell.net>
  • To: XML Dev <xml-dev@ic.ac.uk>
  • Date: Thu, 17 Jun 1999 11:36:50 -0700

John Cowan wrote:
> roddey@us.ibm.com wrote:
> > Would, for instance, it always be considered characters because its
> > not just 'accidental whitespace'?
> Yes, indeed.  Element content models allow only ordinary whitespace,
> not CDATA-bracketed whitespace.  Therefore, nothing can be both
> "ignorable whitespace" and CDATA-bracketed at the same time.
> Clause 3.2.1 makes it clear that whitespace in element-content-model
> elements must match the production S, which a CDATA section does not.

Doesn't make it clear to me!  :-)

2.7 sez "CDATA sections may occur anywhere character data may occur",
and in 2.3 there is no restriction that it not appear within a CDATA
section.  QED; and a variety of other arguments conclude the same.

For a few historical perspectives (and John, I noticed we have
both maintained consistent positions on this issue :-) see:


And similar posts, mostly that in October 1998; the issue summarizes
(IMHO) as a minor lack of clarity in how CDATA shows up.

- Dave

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