I orginally mis-read the SRFI-268 specification - I didn't realize it only provided a
way to specify optional lower bunds - but no way specify optional upper bounds.

In my opinion, this makes the specification a non-starter. We're discussing that there
is no way to specify certains kinds of empty arrays.  Additionally, it is highly
useful to have an option to specify upper bounds for readability and
catching (some) errors.

It appears to me that SRFI-268 solves no problems that SRFI 163 doesn't solve,
but fails to solve some problems that SRFI-163 does solve. So what is the purpose?
--
	--Per Bothner
xxxxxx@bothner.com   http://per.bothner.com/