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From: | Chet Ramey |
Subject: | Re: Associative array keys are not reusable in (( command |
Date: | Fri, 8 Jan 2021 09:24:48 -0500 |
User-agent: | Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 |
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/
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