From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jonathan Nieder <jrnieder@gmail.com>
Subject: Re: Check revision and if no files modified (looking for svnversion
 equivalent)
Date: Sun, 9 Oct 2011 13:10:40 -0500
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fkater@googlemail.com wrote:

> - get the last revision (e.g. r1001)
> - check for modified files not yet checked in (e.g. r1001 M)

"git describe --dirty", maybe.  Thanks to Jean Privat for inventing
it.

> Both information is required for the application's build
> process (Makefiles):
>
> - to display the version in the application
> - to refuse to build a proper 'release' version if something
>   was not checked in

Ok, this seems like two different needs.

- For the former, see GIT-VERSION-GEN in git.git for inspiration.
- For the latter, I'd recommend something like

	git update-index -q --refresh &&
	git diff-index --quiet HEAD ||
	{
		echo >&2 fail
		exit 1
	}

Hope that helps,
Jonathan