Re: unset array[0] doesn't delete the element

[Greg Wooledge]

On Sat, Mar 04, 2017 at 09:10:00PM -0800, Isaac Good wrote:
> Repeat-By:
>       $ arr=(1 2 3); unset arr[-1]; echo "${arr[@]}"
>       1 2 3

On Sat, Mar 04, 2017 at 09:14:09PM -0800, Isaac Good wrote:
> Bug report being withdrawn. I had nullglob set so unset wasn't being
> invoked properly.

The bug is that you failed to quote the 'arr[-1]' word.  Whether you
have nullglob enabled or not, that word *can* be globbed against a file
in the current directory, so it must always be quoted.

imadev:~$ arr=(1 2 3)
imadev:~$ unset 'arr[-1]'
imadev:~$ declare -p arr
declare -a arr=([0]="1" [1]="2")

Good job on detecting the interaction with nullglob, though.