Bug#518752: update-exim4.conf: line 38: $@: unbound variable

[Alban browaeys]

>From \amethyst on freenode #bash  (Neil Moore) :
<\amethyst> it is a bug I think
<\amethyst> that you still get the error even with ${@-foo}
<\amethyst> but ${@+"$@"}  probably shouldn't error out
<\amethyst> since ${foo+bar}  does not
<\amethyst> or ${foo+"$foo"}

I believe this should be cloned to bash (kept here too because the
current $@ is to be fixed either way).
Please tell me if you want me to do it. I ll refresh my memories of the
bts and proceed.

Cheers,
Alban