I'm pretty sure I've seen '90s-era workstation Unixen that don't
tolerate a space between the "#!" cookie and the pathname to the
executable.

All other things being equal, I'd prefer SRFI not criminalize the act of
Scheme scripting on oddball Unixen. :)

Forbidding the space would be compatible with all Unixen, though not
with all current Scheme implementations.

--
                                          Neil W. Van Dyke <xxxxxx@acm.org>
                                          http://www.neilvandyke.org/