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   Re: Non-Validating XML Parsers: Requirements

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  • From: John Cowan <cowan@locke.ccil.org>
  • To: XML Dev <xml-dev@ic.ac.uk>
  • Date: Tue, 04 Aug 1998 14:46:43 -0400

David Brownell wrote:

>         - Validating Parsers
>         - Nonvalidating Parsers that read external definitions
>         - Nonvalidating Parsers that don't read those definitions
> Point being that as section 5.2 makes clear, some WF errors will
> not be reported by the third category of parser, but must be
> reported by the other two.

I think, however, that NVPs may read some external entities (the
DTD external subset, say) but not others (like the content of
external general entities).
> That'd be "SHALL NOT" ... but I think that a parser which
> has read the external DTD entities MUST report as a WF error
> such problems.   See the XML specification in section 5.2, which
> is explicit that this is a WF error AND that it's not consistently
> reported.

No, it means "MAY fail to" or "MAY or may not".
> > 7.  An NVP MAY NOT signal an error if a reference is made to an
> > unparsed entity, if the entity was declared in some external entity.
> As above -- this is a "MUST" if the parser reads external entities.
> and a "MUST NOT" elsewhere.

Unless it reads some e.e.s but not others.
John Cowan	http://www.ccil.org/~cowan		cowan@ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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