It seems to me that we should provide iset-search as well as
iset-search!.  While the distinction is irrelevant for the
current sample implementation, the former is more general; it's
also the only procedure in the library without a non-linear-update
equivalent.  On the other hand, SRFI 113 also lacks a !-less
set-search.  I'm not sure whether this was an intentional design
choice.

As mentioned in a previous message, make-iset-range is also
missing, though mentioned.

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

"Computer science is no more about computers than astronomy is
about telescopes." --pseudo-Dijkstra