Re: [PATCH] Don't export hidden parameters

X-seq: zsh-workers 55023

From: Philippe Altherr <philippe.altherr@xxxxxxxxx>

To: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>

Cc: Zsh hackers list <zsh-workers@xxxxxxx>

Subject: Re: [PATCH] Don't export hidden parameters

Date: Thu, 23 Jul 2026 00:45:56 +0200

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On Mon, Jul 20, 2026 at 3:45 AM Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx> wrote:

On Sun, Jul 19, 2026 at 6:08 AM Philippe Altherr
<philippe.altherr@xxxxxxxxx> wrote:
>
> Whenever an -x flagged parameter is updated, the precomputed environment must be updated. However, if the updated -x flagged parameter is hidden by a same name local parameter, then the -x flagged parameter is not supposed to show up in the environment and therefore no environment update should be performed.

I don't have time to construct a test case today, but what's the
effect of this change when:
-- the exported parameter is a special, and
-- the local parameter is preserving the special-ness
(that is, not declared local -h or was local +h)

Thinking in particular of PATH, MANPATH, FPATH, and WATCH

I will have to look into that in light of your explanations in workers/55016.

Philippe

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