Add test for possible attr bug

This is a test that should replicate an issue that Peff
is setting with git attributes.  But the test doesn't fail.

tests-clar/attr/repo.c

@@ -29,8 +29,6 @@ void test_attr_repo__cleanup(void)
 
 void test_attr_repo__get_one(void)
 {
-	const char *value;
-
 	struct attr_expected test_cases[] = {
 		{ "root_test1", "repoattr", EXPECT_TRUE, NULL },
 		{ "root_test1", "rootattr", EXPECT_TRUE, NULL },
@@ -63,6 +61,8 @@ void test_attr_repo__get_one(void)
 		{ "sub/sub/subdir.txt", "reposub", EXPECT_UNDEFINED, NULL },
 		{ "does-not-exist", "foo", EXPECT_STRING, "yes" },
 		{ "sub/deep/file", "deepdeep", EXPECT_TRUE, NULL },
+		{ "sub/sub/d/no", "test", EXPECT_STRING, "a/b/d/*" },
+		{ "sub/sub/d/yes", "test", EXPECT_UNDEFINED, NULL },
 		{ NULL, NULL, 0, NULL }
 	}, *scan;
 
@@ -224,3 +224,4 @@ void test_attr_repo__bad_macros(void)
 	cl_assert_strequal("hahaha", values[4]);
 	cl_assert(GIT_ATTR_TRUE(values[5]));
 }
+

tests/resources/attr/gitattributes

@@ -23,3 +23,7 @@ macro* macro2 macro2 macro2
 [attr]thirdmacro secondmacro=hahaha
 
 macro_bad firstmacro secondmacro thirdmacro
+
+# another test that Peff found was failing
+[attr]notest !test
+

tests/resources/attr/sub/sub/.gitattributes

+d/*   test=a/b/d/*
+d/yes notest
+