From: David Kastrup <dak@gnu.org>
Date: Wed, 18 Jul 2007 13:27:12 GMT
Subject: Re: [PATCH] filter-branch: get rid of "set -e"
Message-ID: <86vechj0zz.fsf@lola.quinscape.zz>
In-Reply-To: <Pine.LNX.4.64.0707181416050.14781@racer.site>

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

> It was reported by Alex Riesen that "set -e" can break something as 
> trivial as "unset CDPATH" in bash.

Not in bash.  Just tried it.  But there are Bourne shells that do get
annoyed.

> So get rid of "set -e".

I'd rather write

[ "X$CDPATH" = "X" ] || unset CDPATH


With regard to shells, there is an interesting document
(info "(autoconf) Portable Shell")
which is rather disillusioning.

A real horror show is
(info "(autoconf) Limitations of Builtins")
where one learns that using if without else can lead to bad exit
status, too.

-- 
David Kastrup