In addition to vector-unzip, SRFI-43 defines several "common unzippers", but
fails to specify how their names relate to vector-unzip's argument n. As far
as I can tell from the reference implementation, the following holds:
(vector-unzipn vec) == (vector-unzip vec (- n 1)). If this is true, however,
then the reference implementation incorrectly defines vector-unzip5 as
(vector-unzip vec 5).

Regards

Michael Burschik