Re: ${!variable@operator} does not work for variables without values; inconsistencies between present and absent [@] for @A and @a

[Chet Ramey]

On 2/19/20 4:03 PM, Arfrever Frehtes Taifersar Arahesis wrote:
> ${!variable@operator} does not work for variables without values.
> See empty values for all occurrences of ${!var@...} below.

I think you already realized that your test for this case was flawed.
For instance, given

var=VAR2
operator=Q

eval "echo \"'\${!${var}@${operator}}'\""

you end up expanding ${!VAR2@Q}.

-- 
``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/