real_path(): reject the empty string

diff --git a/t/t4012-diff-binary.sh b/t/t4012-diff-binary.sh
index 8b4e80de9627d9a8fa90a31edbe05c2c70f1d4b3..6cebb3951bc7f4e9b772efed052c485d82d1a68d 100755 (executable)
--- a/t/t4012-diff-binary.sh
+++ b/t/t4012-diff-binary.sh
@@ -36,6 +36,18 @@ test_expect_success '"apply --stat" output for binary file change' '
        test_i18ncmp expected current
 '
 
+test_expect_success 'diff --shortstat output for binary file change' '
+       echo " 4 files changed, 2 insertions(+), 2 deletions(-)" >expected &&
+       git diff --shortstat >current &&
+       test_i18ncmp expected current
+'
+
+test_expect_success 'diff --shortstat output for binary file change only' '
+       echo " 1 file changed, 0 insertions(+), 0 deletions(-)" >expected &&
+       git diff --shortstat -- b >current &&
+       test_i18ncmp expected current
+'
+
 test_expect_success 'apply --numstat notices binary file change' '
        git diff >diff &&
        git apply --numstat <diff >current &&