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Re: inherit OLDPWD from environment variable

X-seq: zsh-workers 52993
From: Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx>
To: Franklin Yu <franklinyu@xxxxxxxxxxx>, "zsh-workers@xxxxxxx" <zsh-workers@xxxxxxx>
Subject: Re: inherit OLDPWD from environment variable
Date: Wed, 17 Jul 2024 10:02:34 +0100 (BST)
Archived-at: <https://zsh.org/workers/52993>
Importance: Normal
In-reply-to: <BL1PR14MB5121A4AAF920CD40EFACFC3CD8A32@BL1PR14MB5121.namprd14.prod.outlook.com>
List-id: <zsh-workers.zsh.org>
References: <BL1PR14MB5121A4AAF920CD40EFACFC3CD8A32@BL1PR14MB5121.namprd14.prod.outlook.com>

> On 17/07/2024 08:59 BST Franklin Yu <franklinyu@xxxxxxxxxxx> wrote:
> Hi folks, this could be either a bug report or feature request.
> 
> When I start Zsh with $OLDPWD set to a path different from $PWD, Zsh overwrites
> $OLDPWD with $PWD. Is this expected, or is it a side effect of making sure
> $OLDPWD is non-empty?

I think it's just making sure OLDPWD is set to something on
initialisation.  The only comment says "initialize `OLDPWD' = `PWD'".

I can't think of any obvious objection to importing a value from the
environment and only setting the variable to $PWD if that was empty.
Until the directory within the shell changes its value is pretty
arbitrary.

pws

References:
- inherit OLDPWD from environment variable
  - From: Franklin Yu

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