Ok, so here's the whole relevant xsl snippet
01: <ul>
02: <xsl:for-each-group select="bibtex:entry"
group-by="tokenize(normalize-space(*/bibtex:refgroup),' *; *')">
03: <xsl:sort select="current-grouping-key()" order="ascending"/>
04: <li><xsl:value-of select="current-grouping-key()"/></li>
05: </xsl:for-each-group>
06: </ul>
A:
Now, I first replaced line 2 above with:
02: <xsl:for-each-group select="bibtex:entry"
group-by="tokenize(normalize-space(*[name()=$groupby]),' *; *')">
That should have been
group-by="tokenize(normalize-space(*/*[name()=$groupby]),' *; *')"
C:
(with saxon:evaluate)
I ... changed line 2 above to
02: <xsl:for-each-group select="bibtex:entry"
group-by="tokenize(normalize-space(saxon:evaluate('*/$groupby'
)),' *; *')">
That should have been
group-by="tokenize(normalize-space(saxon:evaluate(concat('*/', $groupby)),'
*; *')"
Variables don't work by textual substitution, even in saxon:evaluate! You
must first construct an expression that contains the element name in a
position where an element name is expected, then you must evaluate the
expression you have constructed. The concat() constructs the expression, the
saxon:evaluate() evaluates it.
Michael Kay
http://www.saxonica.com/
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