From: "Lawrence Velázquez" <larryv@zsh.org>
To: zsh-users@zsh.org
Subject: Re: The elements of enlightenment
Date: Tue, 06 Dec 2022 20:04:27 -0500 [thread overview]
Message-ID: <fbbd8bb0-0922-4c8d-864c-6a0efec97aa8@app.fastmail.com> (raw)
In-Reply-To: <21586f92-9a78-419c-84e5-f203a6f069b6@app.fastmail.com>
On Tue, Dec 6, 2022, at 6:52 PM, Lawrence Velázquez wrote:
> FWIW, ksh has a ${ list;} construct that avoids a subshell:
>
> $ cd / && pwd
> /
> $ : "${ cd /tmp;}" && pwd
> /tmp
> $ : "${ cd /usr }" && pwd
> /usr
>
> Amusingly, the archaic $[...] is still used for arithmetic expansion.
> It's even documented! (Other shells have memory-holed it.)
To clarify my sloppy editing: The last paragraph is about zsh.
Other shells also support legacy $[...] but pretend it doesn't
exist.
--
vq
next prev parent reply other threads:[~2022-12-07 1:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 15:57 Ray Andrews
2022-12-05 16:24 ` Roman Perepelitsa
2022-12-05 18:30 ` Bart Schaefer
2022-12-05 19:35 ` Ray Andrews
2022-12-05 19:44 ` Bart Schaefer
2022-12-05 19:58 ` Roman Perepelitsa
2022-12-05 21:20 ` Ray Andrews
2022-12-05 21:49 ` Roman Perepelitsa
2022-12-05 23:52 ` Ray Andrews
2022-12-06 0:17 ` Bart Schaefer
2022-12-06 1:34 ` Ray Andrews
2022-12-06 18:55 ` Roman Perepelitsa
2022-12-06 19:45 ` Bart Schaefer
2022-12-06 20:01 ` Roman Perepelitsa
2022-12-06 20:07 ` Bart Schaefer
2022-12-06 20:22 ` Roman Perepelitsa
2022-12-06 23:52 ` Lawrence Velázquez
2022-12-07 1:04 ` Lawrence Velázquez [this message]
2022-12-05 21:49 ` Bart Schaefer
2022-12-05 21:51 ` Bart Schaefer
2022-12-05 22:24 ` Ray Andrews
2022-12-05 23:24 ` Bart Schaefer
2022-12-06 1:47 ` Ray Andrews
2022-12-06 6:39 ` Lawrence Velázquez
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