I'm trying to think of a way to remove duplicate items from a merged
index.  Any suggestions?  Each item has a unique item_code in the
individual index, but when merged, I'd like to get rid of duplicates
(defined as having the same item_code).

Obviously, I could filter them out in the application, but the
next-page/previous page thing gets complicated then, since you have to
keep track of the internal pointer, and can't just say "get me page 6 of
this list of search results".

Ideas?  I thought there was a way to do this, but I can't find anything
in the docs now.

Tac