Autzoo.975
gripes
utzoo!henry
Fri Sep 25 17:01:14 1981
shell options
>From rrg Fri Sep 25 14:15:54 1981
Latest surprising discovery: the options specified in a "set" command
exclude others which may be already set (as with news subscription lists).
Thus if you put "set -u" in a shell file which you then invoke as
"sh -x file", the -x flag is turned OFF as soon as the "set -u" is
executed (!).  Fix is to say, instead, "set -$-u" (in order to ADD
u to those which are already present).