JDK version: 7-pro-b123

The following code and output show ZipPath.normalize("/./.") returns null while the Path on default file system returns "/./.".

Although the Path.normalize() is implementation dependent, null for "/./." seems not a reasonalbe return value anyway.

=====Begin of Code=====
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;

import com.sun.nio.zipfs.ZipFileSystem;
import static java.lang.System.out;


public class Normalize {

/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
Map<String, Object> env = new HashMap<String, Object>();
env.put("create", "true");
Path file = Paths.get("place_holder.zip");
file.deleteIfExists();
ZipFileSystem fs = (ZipFileSystem) FileSystems.newFileSystem(file, env,
null);

String path = "/./.";
out.println();
out.println("path to be normalized: " + path);
out.println(Paths.get(path));
out.println(fs.getPath(path).normalize());

}
}

=====End of Code=====

=====Begin of Output=====

path to be normalized: /./.
\.\.
null

=====End of Output=====