[Xapian-discuss] Returning "fresh" results only from multiple DBs

[Henry]

How about extending set_collapse_key() to accept two or more arguments (a-la MultiValueSorter)?  or, more cleanly I suppose, code a new method to create a "collapse_key" object which is a composite list of keys to collapse on, which is used as an arg to set_collapse_key()?

Which one would require the least amount of coding (and API disruption)?

Thoughts?

Cheers
Henry

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