Edit: range-{filter, remove}->{list, vector} shouldn't be in the list
of variadic procedures.  Instead, we should have

    range-filter-map->list
    range-filter-map->vector

which do exactly what we'd like a variadic filter to do, anyway:

    (range-filter-map->list (lambda (x y) (and (even? x)
                                               (even? y)
                                               (list x y)))
                            (numeric-range 0 4)
                            (numeric-range 4 8))
    ; => ((0 4) (2 6))

--
Wolfgang Corcoran-Mathe  <xxxxxx@sigwinch.xyz>

"Heresy is a cradle; orthodoxy, a coffin.  Why should man be
afraid to think, and why should he fear to express his thoughts?"
--Robert G. Ingersoll