From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: What's cooking in git.git (Nov 2008, #06; Wed, 26)
Date: Fri, 12 Dec 2008 21:51:43 -0800
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Cc: "Johannes Sixt" <j.sixt@viscovery.net>,
	"Junio C Hamano" <gitster@pobox.com>,
	"Daniel Barkalow" <barkalow@iabervon.org>,
	"Shawn O. Pearce" <spearce@spearce.org>,
	"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
	git@vger.kernel.org
To: "Nguyen Thai Ngoc Duy" <pclouds@gmail.com>
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"Nguyen Thai Ngoc Duy" <pclouds@gmail.com> writes:

> On 12/12/08, Johannes Sixt <j.sixt@viscovery.net> wrote:
> ...
>> But what if the same persion notices a #define in a kdeutils header file
>>  and want's to know whether it is unused in order to remove it:
>>
>>     $ git grep FOO
>>     kdeutils/foo.h:#define FOO bar
>
> "git grep --cached FOO" ?

That should behave identically when the work tree does not have change
since the index, and by definition paths outside the checkout area in the
"sparse" mode cannot have changes, so "git grep FOO" should behave the
same and should find it.