Re: for loop over parameter expansion of array can miss resulted empty list

[Chet Ramey]

On 3/20/22 5:05 PM, Alexey via Bug reports for the GNU Bourne Again SHell 
wrote:

> Bash Version: 5.1
> Patch Level: 16
> Release Status: release
>
> Description:
>    If use 'Parameter Expansion', for example 'Remove matching suffix 
> pattern', on array and try to iterate over expansion result with for loop, 
> may occur that loop body will not be executed at all.
>
> Repeat-By:
>    Code: x=("/"); for i in "${x[@]%/}"; do echo "i is '$i'"; done
>    Result: none
>    Expected result: i is ''

Thanks for the report. This is the same issue as

https://lists.gnu.org/archive/html/bug-bash/2022-03/msg00033.html

It will be fixed in the next release.

Chet
--
``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/