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Date: Sun, 14 Jun 2015 08:00:34 +0200
Message-ID: <CAHYJk3Q9fZ0ADgaPbzWKBRMRSHOR8oMAw8D0kWWT-yDfnVGa7g@mail.gmail.com>
Subject: Re: Can't overwrite $0 in functions anymore
From: Mikael Magnusson <mikachu@gmail.com>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: zsh workers <zsh-workers@zsh.org>
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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