On Tue, Nov 01, 2011 at 04:31:43PM +0200, Neil Muller wrote:
> On 1 November 2011 16:07, Oleg Broytman <[email protected]> wrote:
> > Strange syntax ${PYTHONPATH:+:$PYTHONPATH} . Are you sure? Shouldn't
> > it be just ${PYTHONPATH:+$PYTHONPATH} ?
>
> It does look a little strange, but it is correct.
>
> It's the POSIX shell alternate value syntax with ":$PYTHONPATH" as the
> alternate value. If the ':' is excluded, there's no separator between
> $parent and $PYTHONPATH when PYTHONPATH is set, and the separator must
> only be added when PYTHONPATH is already set to fix the bug.
Got it. Thank you!
Oleg.
--
Oleg Broytman http://phdru.name/ [email protected]
Programmers don't die, they just GOSUB without RETURN.
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