I'm trying not to use keys
Why? This is essentially what they are there for.
<xsl:for-each select="//Artist[(_at_)festival = .]">
I'm guessing that the value of "." is lost because I'm beginning at the
top of the document again.
no, . inside a predicate always means the node to which the predicate is
being applied, so the Artist node here, this is a general feature, not a
result of the xpath starting with /. You probably want current().
But //Artist[(_at_)festival = anything] is _exactly what keys are designed
to make efficient.
use
<xsl:for-each key select="key('f',.)">
where your key is
<xsl:key match="Artist" use="@festival"/>
This is simpler to write (no need for current() or //) and can be
thousands of times faster when run on a large document.
David
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