Re: Support ksh93 x=${<space>cmd;}

[Sam James]

Cedric Blancher <cedric.blancher@gmail.com> writes:

> Good morning!
>
> Could bash please support x=${<space>cmd;} alongside x=$(cmd)?
>
> x=$(<space>cmd;} works like x=$(cmd), except that cmd does not run in
> a subshell, i.e. the stdout within ${<space>cmd;} is redirected to the
> variable "x", but any other changes of variables (global/static/local)
> are also available outside ${}, unlike $()
>
> <space> can be anything of blank, tab, newline. The cmd must ALWAYS be
> terminated with a ";".
>
> Example:
> ksh93 -c 'out_stderr="${ { out_stdout="${ ls x ; (( out_res=$? )) ; }"
> ; } 2>&1 ; }" ; printf "stdout=%q, stderr=%q, exit code=%d\n"
> "$out_stdout" "$out_stderr" "$out_res"'
> stdout='', stderr=$'ls: cannot access \'x\': No such file or
> directory', exit code=2

See https://lists.gnu.org/archive/html/bug-bash/2025-04/msg00023.html.