If you are using xslt1 then (which I assume since
rtf/result-tree-fragment don't exist in 2.0 then
<xsl:apply-templates select="document($url)" />
If you pass a result tree fragment to document it's like passing a
string (passing a node set would be completely different) so your
variable is coerced to a string just as if you do
<xsl:value-of select="$url"/>
if you use value-of on an empty element sucha as your request element,
you get an empty string.
You want
<xsl:variable name="query"><request id="1" /></xsl:variable>
as you don't want an element node, you just want xml markup in a string
(or text node here).
David
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