From: Jonathan Nieder <jrnieder@gmail.com>
To: Rudolf Polzer <divverent@xonotic.org>
Cc: dash@vger.kernel.org
Subject: Re: Bug: temporary assignments vs shell function
Date: Thu, 14 Jul 2011 05:25:14 -0500 [thread overview]
Message-ID: <20110714102514.GA12904@elie> (raw)
In-Reply-To: <20110714100915.GA18946@div0.qc.to>
Rudolf Polzer wrote:
> So basically - when using an assignment for the duration of a shell command
> execution, an explicit subshell must be used in portable scripts, as
> interpretation of this construct differs among shells and thus cannot be relied
> on.
If "shell command execution" means "function call", then yes.
[...]
> exported() { :; }
>
> foo=bar exported
> sh -c 'echo $foo'
Ah, yuck. On this machine:
- dash does not export
- zsh with "emulate sh" exports
- ksh93 does not export
- pdksh does not export
- posh does not export
- mksh exports
- "bash -o posix" exports
- busybox sh does not export
Fun.
next prev parent reply other threads:[~2011-07-14 10:25 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 [this message]
2011-07-31 22:19 ` Jilles Tjoelker
2011-08-01 5:59 ` Rudolf Polzer
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