From: Junio C Hamano <junkio@cox.net>
Date: Thu, 21 Dec 2006 08:41:53 GMT
Subject: Re: [PATCH 2/3] Add a test for git-rerere
Message-ID: <7vhcvpej3i.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <Pine.LNX.4.63.0612210927150.19693@wbgn013.biozentrum.uni-wuerzburg.de>

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

>> > +rm $rr/postimage
>> > +echo -ne "$sha1\ta1\0" > .git/rr-cache/MERGE_RR
>> 
>> Hmmmmmm.  I've stayed away from "echo -e" so far...
>
> Rather do it with tr? Like this:
>
> 	echo -n "$sha1	a1X" | tr X '\0' > .git/rr-cache/MERGE_RR

Bog-standard old timer's way is not to use -n nor X but just do:

	echo "stuff you want to NUL terminate" | tr '\012' '\0'

> Is $((1+2)) portable enough? I always thought this is a bashism...

That's also in ksh and dash (and in POSIX) and recent updates to
out *.sh scripts make liberal use of them.  As long as you do
not overflow you are fine.