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From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <141002085614.ZM12193@torch.brasslantern.com>
Date: Thu, 02 Oct 2014 08:56:14 -0700
In-reply-to: <20141002093509.789ff912@pwslap01u.europe.root.pri>
Comments: In reply to Peter Stephenson <p.stephenson@samsung.com>
 "Re: PATCH: functions with redirections" (Oct  2,  9:35am)
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To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: PATCH: functions with redirections
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On Oct 2,  9:35am, Peter Stephenson wrote:
}
} > } +function is executed.  Any variables in the redirection are expanded
} > } +at the point the function is executed, but outside the function scope.
} > 
} > ... is actually the way it's supposed to work.

Bash appears to evaluate the redirects IN the function scope:

$ foo() { echo bar; } >$1
[schaefer@torch zsh-5.0-build]$ foo
$1: ambiguous redirect
$ foo /dev/null
$