test_cmp expect actual
'
+test_expect_success 'show A B ... -- <pathspec>' '
+ # side touches dir/sub, file0, and file3
+ # master^ touches dir/sub, and file1
+ # master^^ touches dir/sub, file0, and file2
+ git show --name-only --format="<%s>" side master^ master^^ -- dir >actual &&
+ cat >expect <<-\EOF &&
+ <Side>
+
+ dir/sub
+ <Third>
+
+ dir/sub
+ <Second>
+
+ dir/sub
+ EOF
+ test_cmp expect actual
+'
+
test_expect_success 'diff -I<regex>: setup' '
git checkout master &&
test_seq 50 >file0 &&