Re: What does @{FOOBAR@a} mean? (bash)

In article <uvf043$33fov$1@dont-email.me>,
Lew Pitcher  <lew.pitcher@digitalfreehold.ca> wrote:

On Sat, 13 Apr 2024 20:35:27 +0000, Kenny McCormack wrote:
>

Observe:
 
$ unset FOOBAR
$ echo ${FOOBAR@a}
 
$ FOOBAR=
$ echo ${FOOBAR@a}
 
$ export FOOBAR
$ echo ${FOOBAR@a}
x
$
 
It seems that it prints "x" iff the variable has been exported.
This works with any variable - the output is always "x" (iff it is exported).
 
I can find no mention of this feature in "man bash".

[snip]

What is going on?

>
${parameter@operator}

Wow.  Weird.  Thanks.

I wonder what the "flag values" are that you get with @a (my "x")...

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