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 2b961745cc0aa302d3ac8ea72c4ad919de2e8bbf..b60b11f9f2f820bb7347a845eb66524528c668f9 100755 (executable)
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -147,6 +147,28 @@ test_expect_success 'rebase -i with the exec command checks tree cleanness' '
        git rebase --continue
 '
 
+test_expect_success 'rebase -x with empty command fails' '
+       test_when_finished "git rebase --abort ||:" &&
+       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 env GIT_TEST_REBASE_USE_BUILTIN=true \
+               git rebase -x " " @ 2>actual &&
+       test_i18ncmp expected actual
+'
+
+LF='
+'
+test_expect_success 'rebase -x with newline in command fails' '
+       test_when_finished "git rebase --abort ||:" &&
+       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
+'
+
 test_expect_success 'rebase -i with exec of inexistent command' '
        git checkout master &&
        test_when_finished "git rebase --abort" &&