Re: [xsl] namespaces issue

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2010-11-11 18:54 +0000, Dave Pawson wrote:
> input document
>
> <?xml version="1.0" encoding="utf-8"?>
> <node xmlns:db='abc'>
> <db:docbook xmlns="">fred</db:docbook>
> </node>
>
> ss
>
>  <xsl:template match="db:docbook">
>     <xsl:message>
>       <xsl:value-of select="for $n in in-scope-prefixes(.) return
>  concat('[',namespace-uri-for-prefix($n,.),']')"/> </xsl:message>
>     <xsl:apply-templates/>
>   </xsl:template>
>
> result [http://www.w3.org/XML/1998/namespace] [abc]
>
>
> Question... what effect (seemingly none) does the
> xmlns=""   have?
>
> I created this in error and sat staring at it.
>
>
> Still can't get my head round it. Some sort of precedence?

No, xmlns="" is "special" in that it is the "undeclaration of the 
default namespace" directive.

It takes the default namespace *out* of the in-scope namespaces, 
rather than adding anything in.

In your case, it does nothing, because there was no default namespace 
to take away.

I hope this helps.

. . . . . . . . Ken

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