XSLT: Load XML or other text from external sources

Just discovered you can pull in external XML and other kinds of text directly through standard XSLT 2.0 methods. So here’s a note to self on how.


Example usage

<!-- Single string URI -->
<copy-of select="doc('http://www.w3schools.com/xml/note.xml')"/>

<!-- One or more URI from items, in this case a variable -->
<variable name="uri" select="'http://www.w3schools.com/xml/note.xml'"/>
<copy-of select="document($uri)"/>

<!-- Unparsed text, in this case escaped HTML -->
<copy-of select="unparsed-text('http://example.com')"/>