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From: Roman Perepelitsa <roman.perepelitsa@gmail.com>
Date: Thu, 26 Mar 2020 10:59:09 +0100
Message-ID: <CAN=4vMq_EAtuj-K9P9FpmGADX_ER5msF5aFL6MtKhcT6O+dXxQ@mail.gmail.com>
Subject: Re: Bug report: `setopt noaliases` not respected in `local` statement
 without assignment.
To: Marlon Richert <marlon.richert@gmail.com>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Content-Type: text/plain; charset="UTF-8"

On Thu, Mar 26, 2020 at 10:55 AM Marlon Richert
<marlon.richert@gmail.com> wrote:
>
> Test case:
>
> alias -g tail="multitail -Cs --follow-all"
> f() {
>   setopt localoptions no_aliases
>   local tail
>   tail=1
>   echo $tail
> }

Alias expansion happens when functions get parsed. If you don't want
`tail` to be alias-expanded within function `f`, you need to add
`setopt no_aliases` before the function of `f`.

> g() {
>   setopt localoptions no_aliases
>   local tail=1
>   echo $tail
> }

`tail` within `local tail=1` is not subject to global alias expansion.

Roman.