It may be because there's no good FAQ about it? Or could it
better be done by Xpointer technology? Extensions are fine
and show the goodwill of implementors but they are not portable.
Here's a stylesheet that will do it: pass the path to this stylesheet,
transform it against anything (or nothing if using saxon) and then
transform the orginal source with the generated stylesheet. Less
efficient, but portable, which is usually the case.
(untested)
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xslt="dummy">
<xsl:param name="path"/>
<xsl:namespace-alias stylesheet-prefix="xslt" result-prefix="xsl"/>
<xsl:template match="/">
<xslt:stylesheet version="1.0">
<xslt:template match="{$path}">
<xslt:value-of select="."/>
</xslt:template>
</xslt:stylesheet>
</xsl:template>
</xsl:stylesheet>
cheers
andrew