From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-users@zsh.org
Subject: Re: triviality regarding $# counts
Date: Sat, 13 Apr 2024 21:57:45 -0700 [thread overview]
Message-ID: <CAH+w=7YJFeEnG3Ha1rcH45p=y2xObJDpfdxKrbR=0Y-E49hZcA@mail.gmail.com> (raw)
In-Reply-To: <4a1e027c-a9d8-4306-bf3b-e1282914644c@app.fastmail.com>
On Sat, Apr 13, 2024 at 8:49 PM Lawrence Velázquez <larryv@zsh.org> wrote:
>
> In a sense, you've been using it all along. Given an array "arr",
> $arr is the same as $arr[*] (by default), which is why double-quoting
> it produces a single word.
This puts me in mind of a couple of other details.
Because zsh does not split parameter expansions by default, $ary and
$ary[*] and $ary[@] are equivalent when not quoted, as Lawrence
demonstrated.
However, in all three of those cases, empty elements are typically
discarded, as they would be in a shell that defaults to splitting.
That's why "$ary[@]" is still useful: It quotes each element
individually, so empty elements are preserved.
(Aside, in bash and ksh, $ary is equivalent to ${ary[0]}, not to
${ary[*]}. A little oddly, this is also true for their associative
arrays, that is, the value for key 0 is used.)
next prev parent reply other threads:[~2024-04-14 4:58 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-11 0:56 Ray Andrews
2024-04-12 4:55 ` Lawrence Velázquez
2024-04-12 14:48 ` Ray Andrews
2024-04-12 19:09 ` Bart Schaefer
2024-04-13 1:13 ` Ray Andrews
2024-04-13 1:33 ` Mark J. Reed
2024-04-13 2:28 ` Ray Andrews
2024-04-13 3:25 ` Lawrence Velázquez
2024-04-13 14:37 ` Ray Andrews
2024-04-13 15:14 ` Ray Andrews
2024-04-13 17:19 ` Mark J. Reed
2024-04-13 17:27 ` Mark J. Reed
2024-04-13 18:08 ` Ray Andrews
2024-04-13 19:45 ` Bart Schaefer
2024-04-13 20:36 ` Ray Andrews
2024-04-13 21:01 ` Bart Schaefer
2024-04-14 0:28 ` Ray Andrews
2024-04-14 0:30 ` Lawrence Velázquez
2024-04-14 3:26 ` Ray Andrews
2024-04-14 3:49 ` Lawrence Velázquez
2024-04-14 4:57 ` Bart Schaefer [this message]
2024-04-14 13:24 ` Ray Andrews
2024-04-14 13:35 ` Roman Perepelitsa
2024-04-14 14:06 ` Ray Andrews
2024-04-14 14:15 ` Roman Perepelitsa
2024-04-14 14:53 ` Ray Andrews
2024-04-14 15:11 ` Mark J. Reed
2024-04-14 16:23 ` Ray Andrews
2024-04-14 14:06 ` Mark J. Reed
2024-04-14 14:47 ` Ray Andrews
2024-04-14 14:59 ` Mark J. Reed
2024-04-14 15:51 ` Bart Schaefer
2024-04-14 17:22 ` Ray Andrews
2024-04-14 17:42 ` Mark J. Reed
2024-04-14 18:24 ` Bart Schaefer
2024-04-14 22:00 ` Ray Andrews
2024-04-13 20:11 ` Mark J. Reed
2024-04-13 20:53 ` Bart Schaefer
2024-04-14 0:19 ` Ray Andrews
2024-04-13 1:35 ` Bart Schaefer
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