Re: suggestion to add ' unset -v ' to ${var@A} if not existing

[#!microsuxx]

example code ' svar '

! (( $# )) &&
return 1
unset -v svars sv svar
for svar ; do
sv=${!svar@A} sv=${sv:-unset -v $svar} svars+=( "svar_$svar=$sv" )
done
declare -g "${svars[@]}"
unset -v svars sv svar

On Sun, Nov 3, 2024, 00:56 #!microsuxx <fxmbsw7@gmail.com> wrote:

> echo ${IFS@A}
> IFS=$' \t\n'
>
> declare -A f
> echo ${f@A}
> declare -A f
>
> but echo ${nonexisting@A} returns nothing
>
> so my suggestion is to add , a probably optional opt , that will return
> the unset -v for nonexisting vars
>
> this makes save restore of vars one code less
> removing ..
>
> oifs=${oifs:-unset -v that_var}
>
> oifs=${IFS@A} IFS=new
> <exec $oifs>
>
> greets ..
>