From: Zach Riggle <zachriggle@gmail.com>
To: Zach Riggle <zachriggle@gmail.com>, zsh-workers@zsh.org
Subject: Re: Where is this =(:) construct documented?
Date: Fri, 11 Jun 2021 15:39:29 -0500 [thread overview]
Message-ID: <CAMP9c5mMk-oCRGt4LqAFrOiRWq3ujuoipMaCv2X=W2nEDXmxQA@mail.gmail.com> (raw)
In-Reply-To: <20210611200411.bheljlneq6z3ydsf@chazelas.org>
Thanks for the help, all! This was impossible to Google for!
Most obfuscated I could make it (to mess with coworkers) is...
(){<<<$1} =(:)
Zach Riggle
On Fri, Jun 11, 2021 at 3:04 PM Stephane Chazelas <stephane@chazelas.org> wrote:
>
> 2021-06-11 20:53:22 +0100, Stephane Chazelas:
> [...]
> > info zsh "Process Substitution"
> [...]
>
> For information, searching in info (with / or s or Ctrl+S) these
> days uses extended regexps. So, to search for =(, you need to
> search for =\( or toggle regexp matching off first with R. See
> info info / for details.
>
> [...]
> > That's the third form of process substitution.
> >
> > ksh introduced the first two <(...) and >(...) in the 80s. zsh
> > added that third form in the 90s.
>
> Already in ksh86. In ksh86 you could actually also use A (B) in
> place of A <(B) though it looks like it was removed in later
> versions. rc also had process substitution with a different
> syntax IIRC.
>
> See also:
>
> https://unix.stackexchange.com/questions/49918/when-was-process-substitution-first-introduced/49952#49952
>
> and
>
> https://unix.stackexchange.com/questions/181937/how-create-a-temporary-file-in-shell-script/181996#181996
>
> --
> Stephane
next prev parent reply other threads:[~2021-06-11 20:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 19:17 Zach Riggle
2021-06-11 19:18 ` Zach Riggle
2021-06-11 19:53 ` Stephane Chazelas
2021-06-11 19:58 ` Roman Perepelitsa
2021-06-11 20:04 ` Stephane Chazelas
2021-06-11 20:39 ` Zach Riggle [this message]
2021-06-14 12:44 ` Vincent Lefevre
2021-06-14 14:32 ` Stephane Chazelas
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