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