Encoding detection again ...

David Brownell db at Eng.Sun.COM
Wed Mar 3 22:03:28 GMT 1999


Miles Sabin wrote:
> 
> David Brownell wrote,
> > "Richard L. Goerwitz" wrote:
> > > David Brownell wrote:
> > > > And more to the point, XML processors aren't
> > > > required to report such low level character
> > > > encoding errors ... this would be one.
> > >
> > > On the face of things, this doesn't make sense.
> >
> > For example, character encodings are typically handled
> > many layers below the XML processor.  That processor
> > shouldn't be faulted for behaviors of the underlying
> > processor.
> 
> Most of the time yes ... but remember we're discussing
> the interaction between encoding detection and encoding
> _declarations_. An XML processor has to have some
> involvement in that.

But the error in question would show up after the encoding
declaration had been processed -- well after! -- so the
XML processor itself would no longer need involvement.

The non-normative "detection" can't involve the error ...
surrogates can't appear within encoding declarations.

In any case, it's OK for conformant processors to reject
UCS-2 out of hand, eliminating all possibility of such
an error in any case!

- Dave

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