From: Jilles Tjoelker <jilles@stack.nl>
To: Rudolf Polzer <divverent@xonotic.org>
Cc: Jonathan Nieder <jrnieder@gmail.com>, dash@vger.kernel.org
Subject: Re: Bug: temporary assignments vs shell function
Date: Mon, 1 Aug 2011 00:19:04 +0200 [thread overview]
Message-ID: <20110731221904.GA74938@stack.nl> (raw)
In-Reply-To: <20110714100915.GA18946@div0.qc.to>
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
next prev parent reply other threads:[~2011-07-31 22:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-14 8:34 Bug: temporary assignments vs shell function Rudolf Polzer
2011-07-14 9:26 ` Jonathan Nieder
2011-07-14 10:09 ` Rudolf Polzer
2011-07-14 10:25 ` Jonathan Nieder
2011-07-31 22:19 ` Jilles Tjoelker [this message]
2011-08-01 5:59 ` Rudolf Polzer
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