From 292602b2375360905a98d1deec5411110688b860 Mon Sep 17 00:00:00 2001
From: Matthieu Moy <Matthieu.Moy@imag.fr>
Date: Sun, 10 May 2015 19:19:19 +0200
Subject: [PATCH] fix --version when ran outside a repo

When git-latexdiff is installed without doing a git clone (e.g.
download a tarball without the .git/ dir), we can't reliably compute a
version. Display 'Unknown version' in this case.
---
 git-latexdiff | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/git-latexdiff b/git-latexdiff
index 2c1eded..7367d12 100755
--- a/git-latexdiff
+++ b/git-latexdiff
@@ -45,7 +45,7 @@ git_latexdiff_version='@GIT_LATEXDIFF_VERSION@'
 
 git_latexdiff_compute_version () {
     if [ "$git_latexdiff_version" = '@GIT_LATEXDIFF_VERSION@' ]; then
-	(cd "$(dirname "$0")" && git describe --tags HEAD)
+	(cd "$(dirname "$0")" && git describe --tags HEAD 2>/dev/null || echo 'Unknown version')
     else
 	echo "$git_latexdiff_version"
     fi