return new ByteSink() {
      @Override
      public OutputStream openStream() throws IOException {
        return encodingStream(encodedSink.openStream());
      }
    };
  }

  // TODO(lowasser): document the extent of leniency, probably after adding ignore(CharMatcher)

  private static byte[] extract(byte[] result, int length) {
    if (length == result.length) {
      return result;
    }

    assertThat(ClassPath.toFile(new URL("file:///c:/Documents%20and%20Settings/")))
        .isEqualTo(new File("/c:/Documents and Settings/"));
    assertThat(ClassPath.toFile(new URL("file:///c:/Documents ~ Settings, or not/11-12 12:05")))
        .isEqualTo(new File("/c:/Documents ~ Settings, or not/11-12 12:05"));
  }

  // https://github.com/google/guava/issues/2152