Megginson and XMLNews
db at eng.sun.com
Thu Apr 8 22:18:47 BST 1999
Dawns on me that the real issue here is probably that IE5
doesn't let you browse DTD files directly. Reasonable, and
if so, not at all a bug.
As David noted, (different words) they may be XML, but they're
not documents and when you try to view an XML "file" the browser
must assume it's a document. Ergo the diagnostic. If the
text declaration looked like an XML declaration (with version)
you'd get an error because the first declaration was for an
element or somesuch, rather than a document!
p.s. XMLNews ... cool stuff! I'll look at it in more detail soon.
> > > If you are trying to see DTD in IE5 browser, it reports:
> > > <IE5 Error>
> > > The 'version' attribute is required at this location. Line 1, Position 7
> > > <?xml encoding="UTF-8"?>
> > > </IE5 Error>
> > This is an interesting problem -- MSIE must consider the DTD files to
> > be of type text/xml, but they are not XML documents. If they had an
> > XML declaration at the top (rather than just an encoding declaration),
> > they would be invalid as part of a complete document.
> Actually, this looks like another IE5 XML bug ...
> - 4.3.2 of the XML spec says an external PE (like a DTD fragment!)
> may have an optional "Text Declaration".
> - 4.3.1 says that the text declaration may have (or omit) a version
> - 2.8 explains the rule for the XML declaration
> It's always safe to have an external entity with this at the front:
> <?xml version='1.0' encoding='whatever'?>
> The "version" may be dropped if it _is NOT_ the document entity.
> The "encoding" may be dropped if it _is_ the document entity.
> Only the document entity may have a "standalone" attribute.
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