search for: weight_180

...otentially very inefficient.) Is there actually no way in Ferret to construct a query that will work properly here, or am I missing something? (Yes, I could try encoding the key and the numeric value in a single token and use a range query like (:lower=>"weight_160", :upper=>"weight_180"), but that would cause problems with multi-word keys (e.g. "my weight") that the user might want to be able to find with only some subset of the key''s words (e.g. "weight"). And yes, I''m aware that there are tricks involved in indexing numeric values so...