Dan Manthey <dan_manthey@xxxxxxxxxxx> writes:
> It's documented that the builtin `unset' is non-portable, but what about
> the use of unset variables vs. empty variables? Is this distinction
> always meaningful?
Yes.
> Also, I know that ${var:-default} is not portable. Is
> ${var-default}?
Yes.
> For that matter, I know you can set bash to error out on $var for an
> unset var
Let's not do that, please. Let's stick to traditional behavior
blessed by POSIX. If Bash's behavior is inherited I suppose we should
turn it off.
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