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From: Andrew Main <zefram@tao.co.uk>
Message-Id: <199805050902.KAA04301@taos.demon.co.uk>
Subject: Re: Speaking of "coproc" ...
To: schaefer@brasslantern.com (Bart Schaefer)
Date: Tue, 5 May 1998 10:02:27 +0100 (BST)
Cc: zsh-workers@math.gatech.edu
In-Reply-To: <980503024337.ZM31103@candle.brasslantern.com> from "Bart Schaefer" at May 3, 98 02:43:37 am
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Bart Schaefer wrote:
>How does one close the input to the coproc, so as to send it an end-of-file?
>The only thing I've come up with is "coproc exit" which seems rather silly
>and which closes both the input and the output.

Coprocesses are a bit of a mess.  I'd like to make it possible to attach
the coprocess to specified fd numbers, just like file redirections,
so that one could close either pipe with the ">&-" syntax.  This would
also make it possible to have multiple independent coprocesses.  To do
this properly I think we'd need an extended redirection syntax, to allow
redirecting file descriptors of more than one digit; perhaps we could
do something like the rc syntax?

-zefram