Re: New array_expand_once option

[alex xmb ratchev]

On Thu, Jun 15, 2023, 15:06 Chet Ramey <chet.ramey@case.edu> wrote:

> On 6/14/23 5:18 PM, alex xmb ratchev wrote:
>
> >     [[ -v a["$subscript"] ]]
> >
> >     is already an arithmetic expansion error in bash-5.2, but not in
> bash-5.1.
> >
> >
> > hello there ..
> >
> > i dont get much
> > it d be an arith err if array wasnt -A
> > .. ?
>
> Yes, because only one expansion is performed, and so the subscript is the
> command substitution, which is not a valid arithmetic expression.
>

very good
i like now it works like this , . the old was bugged

>
> > so i shopt -s array_expand_once
> > and [[ -v foo["$var"] ]]
> > .. is the right way ? ( for the change , the future )
>
> It's not as important for compound commands like [[, but for builtins like
> test/[, yes, this is the way to use it.
>

alright , thanks

greets

-- 
> ``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/
>
>