From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: rebase [-i --exec | -ix] <CMD>...
Date: Fri, 08 Jun 2012 08:34:55 -0700
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References: <4FD0D375.9060902@web.de>
 <1339087582-10040-1-git-send-email-Lucien.Kong@ensimag.imag.fr>
 <4FD1162C.50405@kdbg.org>
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Cc: Lucien Kong <Lucien.Kong@ensimag.imag.fr>, tboegi@web.de,
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To: Johannes Sixt <j6t@kdbg.org>
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In-Reply-To: <4FD1162C.50405@kdbg.org> (Johannes Sixt's message of "Thu, 07
 Jun 2012 22:59:24 +0200")
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Johannes Sixt <j6t@kdbg.org> writes:

> How about this?
>
> 	{
> 		first=t
> 		while read -r insn rest
> 		do
> 			case $insn in
> 			pick)
> 				test -n "$first" ||
> 				printf "%s" "$cmd"
> 				;;
> 			esac
> 			printf "%s %s\n" "$insn" "$rest"
> 			first=
> 		done
> 		printf "%s" "$cmd"
> 	} <"$1" >"$1.new" &&
> 	mv "$1.new" "$1"
>
> together with:
> ...

This is my favorite version among the ones I've seen so far.