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Re: `return` does not behave properly under `!`

X-seq: zsh-workers 51122
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx>
Cc: zsh-workers@xxxxxxx, Michael Greenberg <michael@greenberg.science>
Subject: Re: `return` does not behave properly under `!`
Date: Wed, 7 Dec 2022 09:06:21 -0800
Archived-at: <https://zsh.org/workers/51122>
In-reply-to: <576947410.2118097.1670429780069@mail.virginmedia.com>
List-id: <zsh-workers.zsh.org>
References: <m2a640qtt8.fsf@greenberg.science> <20221207084255.ykkg6cgzn4nqc73f@chazelas.org> <m2o7sfp83l.fsf@greenberg.science> <20221207160113.ol3lcbm6p7xu3rru@chazelas.org> <576947410.2118097.1670429780069@mail.virginmedia.com>

On Wed, Dec 7, 2022 at 8:17 AM Peter Stephenson
<p.w.stephenson@xxxxxxxxxxxx> wrote:
>
> I agree with Michael's argument that shows that logically it
> can't have an effect on the status, whatever you want.

That's going to be ugly, because "return" is implemented as a builtin
that propagates lastval.  One level out, at the WC_SUBLIST_NOT
implementation, it has no idea that lastval came from "return" rather
than from any arbitrary sublist.

Follow-Ups:
- Re: `return` does not behave properly under `!`
  - From: Peter Stephenson

References:
- `return` does not behave properly under `!`
  - From: Michael Greenberg
- Re: `return` does not behave properly under `!`
  - From: Stephane Chazelas
- Re: `return` does not behave properly under `!`
  - From: Michael Greenberg
- Re: `return` does not behave properly under `!`
  - From: Stephane Chazelas
- Re: `return` does not behave properly under `!`
  - From: Peter Stephenson

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