continue
		}
		if err == nil && !tc.ok {
			t.Errorf("%q: Closing tag with namespace : expected error, got nil", tc.s)
		}
	}
}

func tokenMap(mapping func(t Token) Token) func(TokenReader) TokenReader {
	return func(src TokenReader) TokenReader {
		return mapper{
			t: src,
			f: mapping,
		}
	}
}

type mapper struct {