From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 02/10] test-lib: add helper functions for config
Date: Thu, 18 Aug 2011 14:10:13 -0700
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References: <20110818045821.GA17377@sigill.intra.peff.net>
 <20110818050114.GB2889@sigill.intra.peff.net>
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Cc: git@vger.kernel.org,
	Steffen Daode Nurpmeso <sdaoden@googlemail.com>,
	Ingo =?utf-8?Q?Br=C3=BCckl?= <ib@wupperonline.de>
To: Jeff King <peff@peff.net>
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Thanks.

> ...
> +# Unset a configuration variable, but don't fail if it doesn't exist.
> +test_unconfig () {
> +	git config --unset-all "$@"
> +	config_status=$?
> +	case "$config_status" in
> +	5) # ok, nothing to usnet
> +		config_status=0
> +		;;

Will queue with 's/nothing to usnet/nothing to unset/'.