On the MacOS version of acme-sac (AcmeSAC-0.31.dmg), It seems "kill" is a
shell function instead of kill.dis.
This function seems broken in a way that I don't quite understand yet
(here's the shell output when I run it):
% kill loop
echo kill > /prog/97/ctl # 86 stewarj 0:00.0 release 73K loop[$Sys]
After I rub the sleep out of my eyes, I'll take another look and see if the
intention of the function makes more sense.