code: def remote(href):
      
      href = _(href)
      href = os.path.join(u("/"), href)
      if os.sep == "\\":
          href = href.replace("\\", "/")
      return href
docs: Normalize remote href
      :param href: remote path
      :return: normalize href
  
      >>> remote("/test/hello.txt")
      u'/test/hello.txt'
      >>> remote("test/hello.txt")
      u'/test/hello.txt'
      >>> remote("test\hello.txt")
      u'/test/hello.txt'
      >>> remote(None)
      u'/'