On Fri, Oct 21, 2016 at 09:19:08PM -0700, L. A. Walsh wrote:
> Eduardo Bustamante wrote:
> >what's wrong with?:
> >echo ${#array[@]}
> Not when "-u" is set, which I often have on to help catch misspellings.
>
> set -u
> echo ${#array[@]}
> bash: array: unbound variable
See http://mywiki.wooledge.org/BashFAQ/112
set -u is almost as bad as set -e. It's a poorly implemented crutch
which breaks scripts that would otherwise work.
If you're going to file bug reports about your scripts breaking when
you use set -u, you should at least mention that in the initial bug
report.
