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Re: [BUG?] Accessing $userdirs (re)hashes all user dirs as named dirs

X-seq: zsh-users 27416
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Marlon Richert <marlon.richert@xxxxxxxxx>
Cc: Zsh Users <zsh-users@xxxxxxx>
Subject: Re: [BUG?] Accessing $userdirs (re)hashes all user dirs as named dirs
Date: Sun, 5 Dec 2021 15:24:54 -0800
Archived-at: <https://zsh.org/users/27416>
In-reply-to: <CAHLkEDs+ph+48sT0NRcF9q60ySqtrb41VLHGFuJT6BT9DZp1Bw@mail.gmail.com>
List-id: <zsh-users.zsh.org>
References: <CAHLkEDv=EUbAJNzjyt_DS1DS=msUOESJVdy2kPiPUhKcoP0STA@mail.gmail.com> <CAH+w=7YHcFtZc2NGOde2322eRh2r5sWNCutOfoXZJXfCmNL_nA@mail.gmail.com> <CAHLkEDs+ph+48sT0NRcF9q60ySqtrb41VLHGFuJT6BT9DZp1Bw@mail.gmail.com>

On Sun, Dec 5, 2021 at 11:40 AM Marlon Richert <marlon.richert@xxxxxxxxx> wrote:
>
> Why would "rebuilding" this hash
> table result in entries that weren't there in the first place? What is
> the reasoning behind this?

The C-code interface for associative array variables (of which
$userdirs is a special case) requires that you are able to iterate
over all the keys of the array.  The keys in this case consist of all
possible user (home directory) names, so the hash table has to be
fully populated.

References:
- [BUG?] Accessing $userdirs (re)hashes all user dirs as named dirs
  - From: Marlon Richert
- Re: [BUG?] Accessing $userdirs (re)hashes all user dirs as named dirs
  - From: Bart Schaefer
- Re: [BUG?] Accessing $userdirs (re)hashes all user dirs as named dirs
  - From: Marlon Richert

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