[Zope] joining zcatalog search results

[Luton, Alex]

Hi,

I have a fairly simple query about processing zcatalog search results. I
want to search a zcatalog of dtml pages based on their text content and
title. At the moment, I'm doing  two separate searches and concatenating
the results using a script, much the same as the example in the zope
book. When the two results are concatenated duplicates may occur, so I'm
looking for a way to join the two correctly. This must be a fairly
common requirement, but I can't find any similar examples. Here's my
python script:

Parameters : query

titles = context.catalog({'title' : query})
princes = context.catalog({'PrincipiaSearchSource' : query})

return titles + princes

--
Alex
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