--- wrote:
...
> Just some days ago some people at this list
> discussed contradictory points
> of view about PIs, and reserved names. This week
> some claim that
> 'xml-stylesheet' is reserved other claim just the
> contrary. What is your
If you truly want to find out, you need to read 2
specifications:
* XML specification itself
(http://www.w3.org/TR/REC-xml/)
* XML Namespaces spec
(http://www.w3.org/TR/REC-xml-names/)
This will clear the issue for you.
For what it's worth, yes, all fully-qualified names
starting with (case-insensitive) prefix 'xml', are
indeed reserved (as per xml 1.0 specification).
Reserved does not mean illegal (as in fatal error,
non-wellformed), just that the meaning of such names
may change with later xml(-related) specifications.
Using local names that start with the same, but have
also a namespace prefix, is discouraged (since they
would become reserved if no namespace prefix was used
-- see Namespaces in XML spec).
Reserved does not lead to a fatal error (Namespaces
spec).
Separate from above, processing instruction target can
not be 'xml' (case insensitive) -- that is a
well-formedness error (fatal, from xml 1.0).
And thus, 'xml-stylesheet' name is reserved and its
semantics defined by an xml specification that was
finalized after xml 1.0 spec itself.
-+ Tatu +-
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