From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <bonzini@gnu.org>
Subject: Re: [PATCH] rebase--interactive: Replace unportable 'tac' by a sed
   script.
Date: Mon, 28 Apr 2008 10:58:04 +0200
Message-ID: <4815919C.6060001@gnu.org>
References: <8D73338C-4EC3-4078-8A34-51DAC1842C2B@silverinsanity.com> <20080427064250.GA5455@sigill.intra.peff.net> <739FA851-F7F5-4CF9-B384-25AA7022B0C2@silverinsanity.com> <48158070.7090007@viscovery.net> <7v7ieie6hm.fsf@gitster.siamese.dyndns.org>
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Cc: Johannes Sixt <j.sixt@viscovery.net>,
	Brian Gernhardt <benji@silverinsanity.com>,
	Jeff King <peff@peff.net>, git list <git@vger.kernel.org>
To: Junio C Hamano <gitster@pobox.com>
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>> Here's my try, which avoids the perl hammer. ;)
>> ...
>> -	tac | \
>> +	sed -ne '1!G;$p;h' | \
> 
> Thanks for trying, but frankly, I'd prefer the Perl hammer, as any
> advanced sed scripting tend to be far less portable.

In fact this script is not portable. :-(  Not so much because of its 
"advanced-ness", but because it loads the entire file in memory, and 
thus hits the limit on the buffer length of many seds.

Paolo