On 7 December 2015 at 14:07, Garrett Cooper <[email protected]> wrote:
>
> Warner's commit was good. There's a more bulletproof way to do this to make 
> it more portable (in most cases, not all), but it would be overkill:
>
> [ "x$x" != x ]

That construct is to support ancient shells that haven't been relevant
for a very long time. It's not necessary today and only serves to
confuse the reader.
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