Rebecca Downey wrote:
Hi.
My question pertains to the Muenchian trick to group XML records by unique
values when the secondary key is optional (in other words it doesn't
necessarily appear in each record).
The back-of-the-book index processing for Docbook (on SourceForge)
demonstrates how to do this. But in essence, you need two key groups:
one for the instances that have a secondary key and one for the
instances that don't.
Cheers,
E.
--
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