trace: give repo_setup trace its own key

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 9a665205884fcdb1c5888558d6edf960e335e013..b8f81d07c33d3596fef5f5a361f4774d5e357fca 100755 (executable)
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -290,4 +290,15 @@ test_expect_success 'log -S requires an argument' '
        test_must_fail git log -S
 '
 
+test_expect_success 'diff --cached on unborn branch' '
+       echo ref: refs/heads/unborn >.git/HEAD &&
+       git diff --cached >result &&
+       test_cmp "$TEST_DIRECTORY/t4013/diff.diff_--cached" result
+'
+
+test_expect_success 'diff --cached -- file on unborn branch' '
+       git diff --cached -- file0 >result &&
+       test_cmp "$TEST_DIRECTORY/t4013/diff.diff_--cached_--_file0" result
+'
+
 test_done