(def ffilter1 (file func (o fldsep whitec)) (ffilter file (fn (line) (func (tokens line fldsep)))))
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(def ffilter1 (file func (o fldsep whitec)) (ffilter file [tokens _ fldsep]))
(def ffilter1 (file func (o fldsep whitec)) (ffilter file [func:tokens _ fldsep]))