[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: `printf -v foo ""` does not set foo=
|
From: |
Chris Down |
|
Subject: |
Re: `printf -v foo ""` does not set foo= |
|
Date: |
Mon, 17 Jun 2013 13:41:51 +0800 |
On 17 June 2013 13:27, Mike Frysinger <vapier@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