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Re: XSLT 3.0: Questions about the Statically-known na

Subject: Re: XSLT 3.0: Questions about the Statically-known namespaces and default element/ type namespace for the evaluation context of the target expression of <xsl:evaluate>
From: "Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 13 Feb 2015 16:39:34 -0000
Re:  XSLT 3.0: Questions about the Statically-known  na
The spec says:

	 if the namespace-context attribute is absent, then the in-scope namespaces
of the xsl:evaluate instruction (with the exception of any binding for the
default namespace) are used as the statically known namespaces for the target
expression, and the value of the innermost [xsl:]xpath-default-namespace
attribute, if any, is used as the default namespace for elements and types in
the target expression.

So the default namespace in the stylesheet is not used, and if there is no
xpath-default-namespace attribute, then there will be no default namespace for
elements and types, which means that "no prefix means no namespace". The rules
are exactly the same as for static XPath expressions in the stylesheet.

>
> I believe that in case 2, the default-namespace binding of the
> <xsl:evaluate> instruction should become the the default-namespace
> binding in the evaluation context (the alternative is to ignore this
> and nave no default-namespace binding for the evaluation case -- as
> obviously should be done in case 1.)
>

No, this isn't what happens.

The rules for handling of the default namespace cause enormous problems for
XSLT beginners, and I would love to change them if I could, but it's too late
for that. And I think it's right that the rules for xsl:evaluate, in the
absence of a namespace-context attribute, should be exactly the same as for
static XPath expressions.

Michael Kay
Saxonica

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