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Re: Possibly missing explanation on difference between '&>' and '> word 2>&1' with multios in manual

X-seq: zsh-workers 49498
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Jett Husher <jetthusher@xxxxx>
Cc: "zsh-workers@xxxxxxx" <zsh-workers@xxxxxxx>
Subject: Re: Possibly missing explanation on difference between '&>' and '> word 2>&1' with multios in manual
Date: Tue, 19 Oct 2021 14:53:50 -0700
Archived-at: <https://zsh.org/workers/49498>
In-reply-to: <WsGGA3fl7_Rls2M9BjtH39XiiEAlAGJdF69ZinN46_PUnar9xWwabMx60XEHWOxjbZNOHc7MCeRHUJ2Q_QJd8zU_iw8UvmmQqmknEZo3ZpU=@pm.me>
List-id: <zsh-workers.zsh.org>
References: <WsGGA3fl7_Rls2M9BjtH39XiiEAlAGJdF69ZinN46_PUnar9xWwabMx60XEHWOxjbZNOHc7MCeRHUJ2Q_QJd8zU_iw8UvmmQqmknEZo3ZpU=@pm.me>

On Tue, Oct 19, 2021 at 8:25 AM Jett Husher <jetthusher@xxxxx> wrote:
>
> Did I miss something or is the explanation really not present?

It's not precisely missing, it's just implicit.  Excerpts:

"Note that the shell opens all the files to be used in the multio process
immediately, not at the point they are about to be written."

"Note also that redirections are always expanded in order.  This happens
regardless of the setting of the MULTIOS option, but with the option in
effect there are additional consequences."

It's not that "&>word" all by itself is not the same as ">word 2>&1"
alone, it's that "&>word" when combined with other redirections is not
the same as ">word 2>&1" combined with other redirections.

Follow-Ups:
- Re: Possibly missing explanation on difference between '&>' and '> word 2>&1' with multios in manual
  - From: Jett Husher
- Re: Possibly missing explanation on difference between '&>' and '> word 2>&1' with multios in manual
  - From: Daniel Shahaf

References:
- Possibly missing explanation on difference between '&>' and '> word 2>&1' with multios in manual
  - From: Jett Husher

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