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From: Bart Schaefer <schaefer@brasslantern.com>
Date: Fri, 2 Mar 2018 21:50:32 -0800
Message-ID: <CAH+w=7ao8JUbbSROihmQNv5QyochrtZdWi7e1v2LjjfX0jCCtw@mail.gmail.com>
Subject: Re: command substitution word joining
To: Zsh Users <zsh-users@zsh.org>
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On Fri, Mar 2, 2018 at 9:33 PM, Mikael Magnusson <mikachu@gmail.com> wrote:
> echo --input-file=<(:)
> --input-file=/proc/self/fd/13
> I could imagine some command taking multiple filenames with ,
> separation perhaps? But you can't prepend anything with =(:).

You can prepend an assignment:

% foo==(:)
% print $foo
/tmp/zshdewoIj