t7610-mergetool: use test_cmp instead of test $(cat file) = $txt

diff --git a/t/t3910-mac-os-precompose.sh b/t/t3910-mac-os-precompose.sh
index 26dd5b7f78a7f7e65ddda24c4686d2ae26fc30de..54ce19e353d924de08d4242f519fef7a44ce4787 100755 (executable)
--- a/t/t3910-mac-os-precompose.sh
+++ b/t/t3910-mac-os-precompose.sh
@@ -187,9 +187,8 @@ test_expect_failure 'handle existing decomposed filenames' '
        echo content >"verbatim.$Adiarnfd" &&
        git -c core.precomposeunicode=false add "verbatim.$Adiarnfd" &&
        git commit -m "existing decomposed file" &&
-       >expect &&
        git ls-files --exclude-standard -o "verbatim*" >untracked &&
-       test_cmp expect untracked
+       test_must_be_empty untracked
 '
 
 # Test if the global core.precomposeunicode stops autosensing