Re: "unset x[0], a BASH bug?"

[Oğuz]

6 Mayıs 2021 Perşembe tarihinde Ulrich Windl <
Ulrich.Windl@rz.uni-regensburg.de> yazdı:

> Hi!
>
> Considering the example given in https://unix.stackexchange.
> com/a/648243/320598 I think it may be a bug, or an inappropriately
> documented feature.
>
> Basically:
> % x=(1 2 3)
> % echo "${#x[@]}"; echo "${x[@]}"
> 3
> 1 2 3
> % unset x[0]
> % echo "${#x[@]}"; echo "${x[@]}"
> 2
> 2 3
> % unset x[0]
> % echo "${#x[@]}"; echo "${x[@]}"
> 2
> 2 3


`unset x[0]' doesn't change indexes of other elements in `x'.

    $ x=(1 2 3)
    $ declare -p x
    declare -a x=([0]="1" [1]="2" [2]="3")
    $ unset x[0]
    $ declare -p x
    declare -a x=([1]="2" [2]="3")

And there is nothing in the documentation that suggests otherwise.


> % unset x[0]
> % echo "${#x[@]}"; echo "${x[@]}"
> 2
> 2 3
>
>

-- 
Oğuz