From: Jonathan Nieder <jrnieder@gmail.com>
Date: Fri, 20 Aug 2010 10:09:57 GMT
Subject: Re: [PATCH] mergetool: Skip autoresolved paths
Message-ID: <20100820100957.GB32127@burratino>
In-Reply-To: <4C6E519E.1080700@hashpling.org>

Charles Bailey wrote:

> We're in the middle of a shell pipe which has replaced stdin and
> merge_file needs access to the human on it's stdin; hence the
> </dev/tty. Strictly.
[...]
> Is there some way of juggling file descriptors in shell?

You can duplicate important fds, like so:

 exec 3<&0

 foo |
 (
	bar
	baz
	quuz <&3
 )

> I had a
> quick play with this but suspect it's a bashism

It's standard, luckily.  See http://unix.org/2008edition/

Hope that helps.