Re: "[ -n ${emptyvariable} ]" returns success

[Jonathan Kamens]

On 09/20/2007 07:46 PM, Paul Jarc wrote:
> jik@kamens.brookline.ma.us wrote:
>   
> >         foo=
> >         [ -n ${foo} ] && echo true
> >
> >         Prints "true".
> >     
> That's the correct behavior.
>   
OK, thanks for the explanation.  It makes sense, although I think it's 
just a little gross. ;-)

> To avoid pitfalls like this, always quote variable expansions.  The [[
> command is also less tricky.
>   
Yes, I know that, but the person who wrote the code in which I noticed 
this issue apparently does not :-).

Thanks again,

 jik