git-synchronizer: disallow blowing away all the branches

dscho · dscho · commit 9b5a8c254b8e · 2013-03-25T12:14:13.000-05:00
In case a server died (such as pacific.mpi-cbg.de) and the IP is changed
for a name and a new repository is set up, that new repository should
not mean that all the branches should be deleted (just because there was
a previous record of branches and now the remote repository is empty).

Signed-off-by: Johannes Schindelin &lt;johannes.schindelin@gmx.de&gt;
diff --git a/git-synchronizer.sh b/git-synchronizer.sh
@@ -28,6 +28,7 @@ url2remotename () {
 
 nullsha1=0000000000000000000000000000000000000000
 find_deleted () {
+	test -n "$2" || return
 	printf '%s\n%s\n%s\n' "$1" "$2" "$2" |
 	sort -k 3 |
 	uniq -u -f 2 |
