I suppose one obvious approach would be this ...
<xsl:variable name="citerefs" select="//db:biblioref/@linkend |
//cite:biblioref/@cite:key |
//tei:cit/@href"/>
.... but I'm worried that's a bad idea from a performance standpoint.
Any other alternatives?
If performance is your only worry with this expression (you don't seem to worry about
'interference'), you could use the following:
<xsl:key name="citerefs" match="db:biblioref/@linkend" use="'all'" />
<xsl:key name="citerefs" match="cite:biblioref/@cite:key" use="'all'" />
<xsl:key name="citerefs" match="tei:cit/@href" use="'all'" />
And use key('citerefs', 'all') instead of $citerefs..
Cheers,
Geert
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