difftool --no-index: error out on --dir-diff (and don't crash)

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 52fa41c707699692db1f387263774c93560e6663..b60b11f9f2f820bb7347a845eb66524528c668f9 100755 (executable)
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -149,10 +149,12 @@ test_expect_success 'rebase -i with the exec command checks tree cleanness' '
 
 test_expect_success 'rebase -x with empty command fails' '
        test_when_finished "git rebase --abort ||:" &&
-       test_must_fail git rebase -x "" @ 2>actual &&
+       test_must_fail env GIT_TEST_REBASE_USE_BUILTIN=true \
+               git rebase -x "" @ 2>actual &&
        test_write_lines "error: empty exec command" >expected &&
        test_i18ncmp expected actual &&
-       test_must_fail git rebase -x " " @ 2>actual &&
+       test_must_fail env GIT_TEST_REBASE_USE_BUILTIN=true \
+               git rebase -x " " @ 2>actual &&
        test_i18ncmp expected actual
 '
 
@@ -160,7 +162,8 @@ LF='
 '
 test_expect_success 'rebase -x with newline in command fails' '
        test_when_finished "git rebase --abort ||:" &&
-       test_must_fail git rebase -x "a${LF}b" @ 2>actual &&
+       test_must_fail env GIT_TEST_REBASE_USE_BUILTIN=true \
+               git rebase -x "a${LF}b" @ 2>actual &&
        test_write_lines "error: exec commands cannot contain newlines" \
                         >expected &&
        test_i18ncmp expected actual