t0050: Add test for case insensitive add

diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index d30169fbdcafdf51561f024e887f05aa800fc9d4..83c54b747f4efe1f99b67284a7ba72b89df07a6d 100755 (executable)
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -326,4 +326,13 @@ test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab:
        ! git diff --check
 
 '
+
+test_expect_success 'line numbers in --check output are correct' '
+
+       echo "" > x &&
+       echo "foo(); " >> x &&
+       git diff --check | grep "x:2:"
+
+'
+
 test_done