From mboxrd@z Thu Jan  1 00:00:00 1970
From: Johannes Sixt <j6t@kdbg.org>
Subject: Re: fatal output from git-show really wants a terminal
Date: Wed, 10 Dec 2008 20:46:50 +0100
Message-ID: <200812102046.50186.j6t@kdbg.org>
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To: Tim Olsen <tim@brooklynpenguin.com>
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On Mittwoch, 10. Dezember 2008, Tim Olsen wrote:
> It appears that when outputting a fatal error, git-show will choose
> stdout over stderr if stdout is a terminal and stderr is not.

This is by design.

> How do I 
> redirect the error but still allow stdout to be displayed?

$ git show 12345 2> /dev/null | less

> ~/git$ mkdir test
> ~/git$ cd test
> ~/git/test$ git init
> ~/git/test$ git show 12345
> fatal: ambiguous argument '12345': unknown revision or path not in the
> working tree.
> Use '--' to separate paths from revisions

You see this through the pager.

> ~/git/test$ git show 12345 2> /dev/null
> fatal: ambiguous argument '12345': unknown revision or path not in the
> working tree.
> Use '--' to separate paths from revisions

And this went through the pager as well.

> ~/git/test$ git show 12345 > /dev/null
> fatal: ambiguous argument '12345': unknown revision or path not in the
> working tree.
> Use '--' to separate paths from revisions

This went straight to the terminal.

The pattern is that if stdout is a terminal, the pager is thrown up and both 
stdout and stderr of git show proper are redirected to the pager. If you 
redirect only stderr, then this redirection is actually ignored.

-- Hannes