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Re: Do local functions exist in Zsh?

X-seq: zsh-workers 53623
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Joachim Ansorg <mail@xxxxxxxxxxxxxxx>
Cc: zsh-workers@xxxxxxx
Subject: Re: Do local functions exist in Zsh?
Date: Wed, 14 May 2025 07:00:54 -0700
Archived-at: <https://zsh.org/workers/53623>
In-reply-to: <b23a5c7c-f8e9-473e-9a9b-03ab9719fc73@bashsupport.com>
List-id: <zsh-workers.zsh.org>
References: <b23a5c7c-f8e9-473e-9a9b-03ab9719fc73@bashsupport.com>

On Tue, May 13, 2025 at 7:51 AM Joachim Ansorg <mail@xxxxxxxxxxxxxxx> wrote:
>
> A user requested support for "local functions" at
> https://github.com/BashSupport-Pro/bashsupport-pro/issues/200

In the forthcoming 5.10, you can simulate a local function with the
"mkshadow" utility.

          {
            mkshadow fname
            function fname {
              # Do your new thing
            }
            # Invoke callers of fname
          } always {
            rmshadow
          }

It's called "shadow" because the intention is to conceal a global
function with the same name, but it doesn't have to be used that way.

References:
- Do local functions exist in Zsh?
  - From: Joachim Ansorg

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