From: Andrew Main <zefram@tao.co.uk>
To: schaefer@brasslantern.com (Bart Schaefer)
Cc: zefram@tao.co.uk, zsh-workers@math.gatech.edu
Subject: Re: zsh vs. ksh coproc redirection semantics
Date: Thu, 7 May 1998 09:27:16 +0100 (BST) [thread overview]
Message-ID: <199805070827.JAA01262@taos.demon.co.uk> (raw)
In-Reply-To: <980506132628.ZM14415@candle.brasslantern.com> from "Bart Schaefer" at May 6, 98 01:26:28 pm
Bart Schaefer wrote:
>That doesn't address the issue of how to close the coproc input in the
>basic zsh model. Is "coproc exit" really going to be the approved way?
That's a separate issue. I think the best solution is tied into access
to file descriptors above 9: make the coprocess fds be 10 and 11, and
then you can do (ignoring for the moment the single digit restriction of
the syntax) "10>&- 11>&-" to close them. ">&p" would be shorthand for
">&10", and so on.
What syntax to use for these fds is another issue altogether. We're
seriously short of special characters, and I don't see a good syntax
that's compatible with POSIX. (The best I see is to put ">;" preceding
the multi-digit version of the normal syntax.) OTOH, it would probably
be reasonably easy to simply allow multi-digit fd numbers with an option,
enabled by default only in zsh mode.
-zefram
prev parent reply other threads:[~1998-05-07 8:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <980506090047.ZM13585@candle.brasslantern.com>
1998-05-06 16:52 ` Andrew Main
1998-05-06 20:26 ` Bart Schaefer
1998-05-07 8:27 ` Andrew Main [this message]
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