Date: Fri, 19 Oct 2018 16:21:27 -0400
From: Grisha Levit <grishale...@gmail.com>
Message-ID:
<CAMu=brp3q_-gv2j7r+hbxzx8llakhqgd1o0y64q0xb2ubrr...@mail.gmail.com>
| I guess it's a bit surprising that $_ is set to just the variable name
| and not "the last argument to the previous command", which would be
| the full assignment string.
Except that a var assign isn't a command at all, but something different, and
one could argue that with no command $_ should retain its value from whatever
was the last command. But $_ has so many different uses in bash (and ksh93)
and was a horrible botch in the first place (from when it was first added to
ksh) so what it does isn't worth being concerned about - as best as can be
done, simply ignore it, and hope it eventually goes away....
kre
ps: it would be really nice if, in bash (and everywhere else) $_ could turn
into one of the magic vars which loses its special properties when unset.
Scripts that want to use $_ (if there are any, which I doubt) won't be
unsetting it and would continue to work, the rest of us (at least those of
us not insane enough to try and use it) could just "unset _" in .profile (etc)
and be done with it.
