+test_expect_success 'add SP before non-empty (1)' '
+ git show -s --pretty=format:"%s% bThanks" HEAD^^ >actual &&
+ test $(wc -w <actual) = 2
+'
+
+test_expect_success 'add SP before non-empty (2)' '
+ git show -s --pretty=format:"%s% sThanks" HEAD^^ >actual &&
+ test $(wc -w <actual) = 4
+'
+