+test_begin_subtest "Top level --config:FILE option"
+test_expect_equal "$(notmuch --config:alt-config config get user.name)" \
+ "Another Name"
+
+test_begin_subtest "Top level --config<space>FILE option"
+test_expect_equal "$(notmuch --config alt-config config get user.name)" \
+ "Another Name"
+