On Thu, Jul 14, 2011 at 12:09:15PM +0200, Rudolf Polzer wrote:
> I just retested with that very command, and yes, the FreeBSD /bin/sh
> does behave the "non-POSIX" (and "obvious") way, and so does the
> Solaris /bin/sh.
Yes, FreeBSD /bin/sh is not POSIX compliant here. Because the current
behaviour is explicitly documented and much more useful than the POSIX
behaviour, I don't really like changing it ;-)
Different from bash in non-posix mode, FreeBSD /bin/sh does persist
assignments before special builtins as required by POSIX.
The original Bourne shell is different again, though. It ignores the
assignments completely and does not even expand them (a
y=${someunsetvar?} assignment is silently ignored).
--
Jilles Tjoelker
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