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Re: [BUG] zsh fails to resume function

X-seq: zsh-workers 52334
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Paolo Perego <paolo.perego@xxxxxxxx>
Cc: zsh-workers@xxxxxxx
Subject: Re: [BUG] zsh fails to resume function
Date: Wed, 29 Nov 2023 10:25:02 -0800
Archived-at: <https://zsh.org/workers/52334>
In-reply-to: <4a7436b9-e444-4858-ad0d-a9913657ddef@DB9PR04MB9626.eurprd04.prod.outlook.com>
List-id: <zsh-workers.zsh.org>
References: <4a7436b9-e444-4858-ad0d-a9913657ddef@DB9PR04MB9626.eurprd04.prod.outlook.com>

(Note, we received this twice as workers/52330 and workers/52331, I'm
responding to 52330.)

On Wed, Nov 29, 2023 at 9:17 AM Paolo Perego <paolo.perego@xxxxxxxx> wrote:
>
> It seems zsh fails to re-enter a nested command putted in background
> when defined in a function.
> [...]
> Can you please confirm that this is a bug for you and give us a link to
> backtrack the progress?

This is fixed in current git HEAD by  workers/50874 and workers/50922.
https://www.zsh.org/mla/workers/2022/msg01204.html
https://www.zsh.org/mla/workers/2022/msg01252.html

Note the subject of the latter refers to "problem with 'ls | less'
shell function".

In the specific example in your test case, "less" was known to trigger
the bug due to its internal handling of the terminal (stdin/out/err
descriptors) and signals.  Thread starts at
https://www.zsh.org/mla/workers/2022/msg01115.html

It might be possible to backport those two patches into your build.

References:
- [BUG] zsh fails to resume function
  - From: Paolo Perego

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