From: Mikael Magnusson <mikachu@gmail.com>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: zsh workers <zsh-workers@zsh.org>
Subject: Re: Can't overwrite $0 in functions anymore
Date: Sun, 14 Jun 2015 08:00:34 +0200 [thread overview]
Message-ID: <CAHYJk3Q9fZ0ADgaPbzWKBRMRSHOR8oMAw8D0kWWT-yDfnVGa7g@mail.gmail.com> (raw)
In-Reply-To: <150613165827.ZM29680@torch.brasslantern.com>
On Sun, Jun 14, 2015 at 1:58 AM, Bart Schaefer
<schaefer@brasslantern.com> wrote:
> On Jun 14, 1:05am, Mikael Magnusson wrote:
> }
> } Is this an intended change?
>
> Hm. Sort of. It's a side-effect of implementing POSIX_ARGZERO.
>
> With POSIX_ARGZERO set, $0 must always contain the name used to invoke
> the shell. If POSIX_ARGZERO changes from set to not set, $0 has to be
> restored as specified by the (on or off) setting of FUNCTION_ARGZERO.
>
> Consequently the value of $0 became fixed for both cases; assignments
> to it are no-ops.
>
> However, you can still change the value of $0 by hiding the special:
>
> torch% () { local -h 0=hello; echo $0 }
> hello
Ah, I see. I was only using it in a single helper function out of
laziness, precisely because it let me leave out a local statement. :)
--
Mikael Magnusson
prev parent reply other threads:[~2015-06-14 6:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-13 23:05 Mikael Magnusson
2015-06-13 23:58 ` Bart Schaefer
2015-06-14 6:00 ` Mikael Magnusson [this message]
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