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Re: -v no longer works for associative arrays

From: Chet Ramey
Subject: Re: -v no longer works for associative arrays
Date: Thu, 13 Oct 2022 11:41:33 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.3.2

On 10/13/22 10:42 AM, Bryan Roessler wrote:

Bash Version: 5.2
Patch Level: 2
Release Status: release


bash-5.2# declare -A a
bash-5.2# a[foo]=bar
bash-5.2# [[ -v a[@] ]]; echo $?


j. Associative array assignment and certain instances of referencing (e.g.,
   `test -v') now allow `@' and `*' to be used as keys.

There are other ways to test whether or not an associative array has any
set elements, but there was no way to use `*' or `@' as a key in previous

There was a long discussion about this back in early 2021. Some of the
relevant messages about `@' and `*' keys start here:


``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/

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