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

[Greg Wooledge]

On Thu, Feb 20, 2020 at 01:46:25AM +0100, Arfrever Frehtes Taifersar Arahesis 
wrote:
> Is there any way for using ${!variable} combined with
> ${variable@operator}

No.