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Re: Changing the way bash expands associative array subscripts


From: Chet Ramey
Subject: Re: Changing the way bash expands associative array subscripts
Date: Thu, 8 Apr 2021 15:12:32 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.9.0

On 4/6/21 11:01 AM, Greg Wooledge wrote:
On Tue, Apr 06, 2021 at 11:28:13PM +0900, Koichi Murase wrote:
2) we
can distinguish the erasure of the element associated with key=@
`unset -v a[$key]' from the entire array erasure `unset -v a[@]'.

As a counter-proposal, Chet could entirely remove the special meaning
of unset 'a[@]' and introduce a new option to unset which would take
its place.  It appears -a is not yet used, so that would be a good pick.

No need, since a bare `unset a' already removes the array variable a.

--
``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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