Re: [xml-dev] Support for XML 1.1?

[David Carlisle <davidc@nag.co.uk>]

On 01/10/2012 17:06, Costello, Roger L. wrote:
> It appears that using XML 1.1 is the best way to go for supporting
> all the US-ASCII characters.

Note that is still not all 0 (NULL) is still omitted (it happens to have
been omitted also from the rfc mail format that you are looking at but
that is again just another essentially arbitrary choice that won't be
true in general).


>
> 2. Do all modern XML Schema validators and XSLT processors support
> XML 1.1?

You need to define "modern". If you define it as supporting XML 1.1,
then clearly the answer is yes.

Note that technically schema 1.0 and xslt 1 are not compatible with xml
1.1 as it allows element names that are not allowed by the xpath and
schema grammar as written (because that references the XML 1.0 rules).
But then XML 1.0 made an incompatible change _in place_ at edition 5 so
changing the characters allowed in element names. So in practice it is
best not to try to take too literal reading of the fine print here and
just hope that your processor does "the sensible thing" for some
definition of sensible.

> 3. Why isn't everyone using XML 1.1?
Because the benefit of using XML is using a shared syntax and if you use 
XML 1.1 when no one else is that benefit is diminished.

> 4. Is there any reason for not using XML 1.1?


see above
> 5. Do you use XML 1.1?

no (but I do use some xml 1.0 systems that use xml 1.0 5th edition which 
is most of the xml 1.1 changes, but not the &#1 numeric references for 
control points.


David


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