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Re: Mysterious (debug?) output in loop

X-seq: zsh-users 28847
From: Roman Perepelitsa <roman.perepelitsa@xxxxxxxxx>
To: dominik.vogt@xxxxxx, Zsh Users <zsh-users@xxxxxxx>
Subject: Re: Mysterious (debug?) output in loop
Date: Sun, 29 Jan 2023 21:20:56 +0100
Archived-at: <https://zsh.org/users/28847>
In-reply-to: <Y9bTcNA8Har0xT6L@localhost>
List-id: <zsh-users.zsh.org>
References: <Y9bTcNA8Har0xT6L@localhost>

On Sun, Jan 29, 2023 at 9:19 PM Dominik Vogt <dominik.vogt@xxxxxx> wrote:
>
> Running this script
>
> --- snip ---
> #!/usr/bin/zsh
> emulate zsh
> repeat 3; do
>         local FOO
>         FOO="0"
> done
> --- snip ---
>
> Produces this output:
>
>   $ ./foo
>   FOO=0
>   FOO=0
>
>   $ zsh --version
>   zsh 5.8 (x86_64-debian-linux-gnu)
>
> Why does it print 'FOO=0' to stdout (not stderr) in all passes of
> the loop except the first one?

That's what `local` does by default. You can `setopt typeset_silent`
to disable this (I always do in all my scripts).

Roman.

References:
- Mysterious (debug?) output in loop
  - From: Dominik Vogt

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