diff --stat: add a test for output with COLUMNS=40

diff --git a/t/t3903-stash.sh b/t/t3903-stash.sh
index fcdb18217a777f5dbb77b0071af7159c6985656d..dbe2ac179dead1ea825f62b7c26e3ceb6c0d638d 100755 (executable)
--- a/t/t3903-stash.sh
+++ b/t/t3903-stash.sh
@@ -601,4 +601,28 @@ test_expect_success 'stash apply shows status same as git status (relative to cu
        test_cmp expect actual
 '
 
+cat > expect << EOF
+diff --git a/HEAD b/HEAD
+new file mode 100644
+index 0000000..fe0cbee
+--- /dev/null
++++ b/HEAD
+@@ -0,0 +1 @@
++file-not-a-ref
+EOF
+
+test_expect_success 'stash where working directory contains "HEAD" file' '
+       git stash clear &&
+       git reset --hard &&
+       echo file-not-a-ref > HEAD &&
+       git add HEAD &&
+       test_tick &&
+       git stash &&
+       git diff-files --quiet &&
+       git diff-index --cached --quiet HEAD &&
+       test "$(git rev-parse stash^)" = "$(git rev-parse HEAD)" &&
+       git diff stash^..stash > output &&
+       test_cmp output expect
+'
+
 test_done