Re: wrong variable name in error message about unbound variable?

[Chet Ramey]

On 10/17/23 8:43 AM, Zachary Santer wrote:
> On Tue, Oct 17, 2023 at 8:00 AM Greg Wooledge <greg@wooledge.org> wrote:
>
> >      unicorn:~$ unset -v a b c array
> >      unicorn:~$ a=b b=c c=42 array[a]=foo; declare -p array
> >      declare -a array=([42]="foo")
> What? What is Bash doing here? Dereferencing iteratively until it finds
> something it can do arithmetic with?

Identifiers in arithmetic expressions are treated as shell variables.
The variable value is treated as an expression and evaluated to produce
the result.

--
``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/