On Fri, Sep 16, 2016 at 12:38:20PM -0700, Eric Pruitt wrote:
> first time. However, that construct still won't work because if a
> variable is defined, it will still choose "not empty:"
>     ericpruitt@sinister:~$ X=
>     ericpruitt@sinister:~$ echo ${X+Not empty}
>     Not empty

Then you want :+ instead of +

Note that I had :+ (not +) in my original email.

imadev:~$ X=
imadev:~$ echo "${X+Not empty}"
Not empty
imadev:~$ echo "${X:+Not empty}"


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