X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=read-tree.c;h=ca808739dba4235f0f8a5777ff4bbfe4443d1d27;hb=b5cf3c8b7767e5f2c8b0df718ef91ccfc36c61fe;hp=6a5c08c4c6903fec45cbe37a63f0bc42fbae53bc;hpb=2ba6c47be1762726ad0c1d5779064c489150d789;p=git.git

diff --git a/read-tree.c b/read-tree.c
index 6a5c08c4..ca808739 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -655,7 +655,7 @@ int main(int argc, char **argv)
 			die("failed to unpack tree object %s", arg);
 		stage++;
 	}
-	if (update && !merge)
+	if ((update||index_only) && !merge)
 		usage(read_tree_usage);
 	if (merge && !fn) {
 		if (stage < 2)