Re: Associative array keys are not reusable in (( command

[Chet Ramey]

On 1/8/21 5:20 AM, Oğuz wrote:
> See:
>
>      $ declare -A assoc=($'\n\'' 42)
>      $ for key in "${!assoc[@]}"; do (( assoc[$key]++ )); done
>      bash: ((: assoc[
>      ']++ : bad array subscript (error token is "assoc[
>      ']++ ")
>      $
>      $ (( assoc[${key@Q}]++ ))
>      bash: ((: assoc[$'\n\'']++ : bad array subscript (error token is
> "assoc[$'\n\'']++ ")

This situation is why bash-5.0 introduced the `assoc_expand_once' option.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/