}
		}
	}
}

func TestIssue20685(t *testing.T) {
	testCases := []struct {
		s  string
		ok bool
	}{
		{`<x:book xmlns:x="abcd" xmlns:y="abcd"><unclosetag>one</x:book>`, false},
		{`<x:book xmlns:x="abcd" xmlns:y="abcd">one</x:book>`, true},
		{`<x:book xmlns:x="abcd" xmlns:y="abcd">one</y:book>`, false},
		{`<x:book xmlns:y="abcd" xmlns:x="abcd">one</y:book>`, false},