From: Stephane Chazelas <Stephane_Chazelas@yahoo.fr>
To: Zsh hackers list <zsh-workers@sunsite.dk>
Subject: Re: f() { ...; } > file
Date: Thu, 13 Nov 2008 14:25:06 +0000 [thread overview]
Message-ID: <20081113142506.GA5114@sc.homeunix.net> (raw)
In-Reply-To: <20081105212036.GA4698@sc.homeunix.net>
On Wed, Nov 05, 2008 at 09:20:36PM +0000, Stephane Chazelas wrote:
[...]
> $ bash -c 'foo() { echo a >&3; } 3>&1; foo'
> a
> $ ksh -c 'foo() { echo a >&3; } 3>&1; foo'
> a
> $ zsh -c 'foo() { echo a >&3; } 3>&1; foo'
> foo: 3: bad file descriptor
> $ ARGV0=sh zsh -c 'foo() { command echo a >&3; } 3>&1; foo'
> foo: 3: bad file descriptor
>
> It looks like zsh evaluates the redirection at the time the
> function is defined rather than when it is called.
>
> It's OK when declaring the function as
>
> foo() echo a > file
> or
> foo() (echo a) > file
>
> instead of
>
> foo() { echo a; } > file
[...]
Interestingly, foo() > file { echo a; } works:
~$ bash -c 'f() { echo a; } > /dev/null; declare -f'
f ()
{
echo a
} > /dev/null
~$ ksh -c 'f() { echo a; } > /dev/null; typeset -f'
f() { echo a; } > /dev/null;% ~$ zsh -c 'f() { echo a; } > /dev/null; typeset -f'
f () {
echo a
}
~$ zsh -c 'f() > /dev/null { echo a; }; typeset -f'
f () {
{
echo a
} > /dev/null
}
--
Stéphane
next prev parent reply other threads:[~2008-11-13 14:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-05 21:20 Stephane Chazelas
2008-11-05 22:49 ` Phil Pennock
2008-11-06 14:38 ` Stephane Chazelas
2008-11-13 14:25 ` Stephane Chazelas [this message]
2008-11-13 14:42 ` [PATCH] " Stephane Chazelas
2008-11-13 14:52 ` Peter Stephenson
2008-11-13 15:03 ` Stephane Chazelas
2008-11-13 15:13 ` Stephane Chazelas
2008-11-13 15:27 ` Peter Stephenson
2008-11-13 14:55 ` Stephane Chazelas
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