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From: Chet Ramey <chet.ramey@case.edu>
Newsgroups: gnu.bash.bug
Subject: Re: Expansions for array assignment not documented
Date: Fri, 17 Apr 2020 16:32:06 -0400
Organization: ITS, Case Western Reserve University
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Approved: bug-bash@gnu.org
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References: <alpine.LSU.2.21.2004171140040.4631@triangle> <36c0d8d7-c1f2-a980-7721-64ecac760ef0@case.edu>
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To: "E. Choroba" <choroba@matfyz.cz>, bug-bash@gnu.org
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Xref: csiph.com gnu.bash.bug:16159

On 4/17/20 5:48 AM, E. Choroba wrote:

> Bash Version: 4.4
> Patch Level: 23
> Release Status: release
> 
> Description:
>     Expansions in an assignment are documented under "SIMPLE COMMAND
> EXPANSION":
> 
>     > The text after the = in each variable assignment undergoes tilde
>     > expansion, parameter expansion, command substitution, arithmetic
>     > expansion, and quote removal before being assigned to the
>     > variable.
> 
>     However, a compound assignment to an array is different: the
>     values also undergo pathname and brace expansions:

It's true. The words in a compound assignment undergo all the shell
expansions.

> Fix:
>     The additional expansions should be documented either in the
>     paragraph quoted above, or in the "ARRAYS" section where compound
>     assignment is described.

I'll add something.

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/