apply: add t4137 for submodule updates

diff --git a/t/t0008-ignores.sh b/t/t0008-ignores.sh
index 63beb99828cc17d2ec8218a6470b62c02a78806b..5ef5ad3db4f6c307e6bcf71f57dcdc4deaafc082 100755 (executable)
--- a/t/t0008-ignores.sh
+++ b/t/t0008-ignores.sh
@@ -806,4 +806,27 @@ test_expect_success !MINGW 'quoting allows trailing whitespace' '
        test_cmp err.expect err
 '
 
+test_expect_success NOT_MINGW,NOT_CYGWIN 'correct handling of backslashes' '
+       rm -rf whitespace &&
+       mkdir whitespace &&
+       >"whitespace/trailing 1  " &&
+       >"whitespace/trailing 2 \\\\" &&
+       >"whitespace/trailing 3 \\\\" &&
+       >"whitespace/trailing 4   \\ " &&
+       >"whitespace/trailing 5 \\ \\ " &&
+       >"whitespace/trailing 6 \\a\\" &&
+       >whitespace/untracked &&
+       echo "whitespace/trailing 1 \\    " >ignore  &&
+       echo "whitespace/trailing 2 \\\\\\\\\\\\\\\\" >>ignore &&
+       echo "whitespace/trailing 3 \\\\\\\\\\\\\\\\ " >>ignore &&
+       echo "whitespace/trailing 4   \\\\\\\\\\\\    " >>ignore &&
+       echo "whitespace/trailing 5 \\\\\\\\ \\\\\\\\\\\\   " >>ignore &&
+       echo "whitespace/trailing 6 \\\\\\\\a\\\\\\\\" >>ignore &&
+       echo whitespace/untracked >expect &&
+       >err.expect &&
+       git ls-files -o -X ignore whitespace >actual 2>err &&
+       test_cmp expect actual &&
+       test_cmp err.expect err
+'
+
 test_done