On 17 June 2013 13:27, Mike Frysinger <vap...@gentoo.org> wrote:
> simple test code:
> unset foo
> printf -v foo ""
> echo ${foo+set}
>
> that does not display "set". seems to have been this way since the feature
> was added in bash-3.1.Interesting. It also won't change it if it already exists, it seems: $ foo=bar $ printf -v foo "" $ echo "$foo" bar $ echo "$BASH_VERSION" 4.2.45(2)-release
