From mboxrd@z Thu Jan  1 00:00:00 1970
From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Subject: Re: Solaris test failure for git-1.5.4.4 -- t0021-conversion.sh
Date: Wed, 12 Mar 2008 14:11:17 +0100 (CET)
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Cc: Junio C Hamano <gitster@pobox.com>,
	Whit Armstrong <armstrong.whit@gmail.com>,
	Asheesh Laroia <asheesh@asheesh.org>, git@vger.kernel.org
To: Jeff King <peff@peff.net>
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Hi,

On Wed, 12 Mar 2008, Jeff King wrote:

> On Wed, Mar 12, 2008 at 08:43:36AM -0400, Jeff King wrote:
> 
> > It seems that /usr/bin/tr silently removes NULs from the input stream:
> > 
> >   $ printf 'foo\000bar' | xxd
> >   0000000: 666f 6f00 6261 72                        foo.bar
> >   $ printf 'foo\000bar' | /usr/bin/tr '\000' 'Q' | xxd
> >   0000000: 666f 6f62 6172                           foobar
> > 
> > I don't think there is an easy way around this; we might have to switch
> > to using perl.
> 
> Even more exciting, /usr/bin/tr actually works going the opposite
> direction, but /usr/ucb/tr doesn't:
> 
>   $ echo x | /usr/bin/tr x '\000' | xxd
>   0000000: 000a                                     ..
>   $ echo x | /usr/ucb/tr x '\000' | xxd
>   0000000: 780a                                     x.
> 
> but other characters seem to work:
> 
>   $ echo x | /usr/ucb/tr x '\012' | xxd
>   0000000: 0a0a                                     ..

All the more reson to make more things builtin.  (I agree that for tests, 
we should stay with tr, though.)

Ciao,
Dscho