userdiff: add a builtin pattern for dts files

diff --git a/t/t2101-update-index-reupdate.sh b/t/t2101-update-index-reupdate.sh
index 685ec45639a5e9a2bf929e10aa30976e9a4c456b..6c32d42c8c688845682d578141dbef760a663215 100755 (executable)
--- a/t/t2101-update-index-reupdate.sh
+++ b/t/t2101-update-index-reupdate.sh
@@ -73,7 +73,7 @@ test_expect_success 'update-index --update from subdir' '
        100644 $(git hash-object dir1/file3) 0  dir1/file3
        100644 $file2 0 file2
        EOF
-       test_cmp current expected
+       test_cmp expected current
 '
 
 test_expect_success 'update-index --update with pathspec' '