.. but the manual says: If val is #f, then any entry for var is deleted.
Welcome to scsh 0.6.1 (Combinatorial Algorithms)
Type ,? for help.
> (run (ls))
CVS diff.scm.~4~ install.scm.~6~
bin diff.scm.~5~ ldd-files.scm
bin.~1~ find-broken-bins.scm ldd-files.scm.~
bin.~2~ finddup.scm modprobe.scm
bin.~3~ finddup.scm.~1~ mount-remote.sc
build finddup.scm.~2~ mount-remote.sc
configure.scm.~1~ hd.scm mount.scm
cron hd.scm.~1~ mount.scm.~1~
deposit.scm hd.scm.~2~ mount.scm.~2~
diff.scm install.scm.~1~ mount.scm.~6~
diff.scm.~1~ install.scm.~2~ mount.scm.~7~
diff.scm.~2~ install.scm.~5~ mz.scm
0
> (setenv "ZDOTDIR" #f)
> (run (ls))
Error: STRINGS parameter not list.
#f
#{Procedure 8724 (string-join in string-lib)}
1>