# File lib/addressable/uri.rb, line 559
    def normalized_scheme
      @normalized_scheme ||= (begin
        if self.scheme != nil
          if self.scheme =~ /^\s*ssh\+svn\s*$/i
            "svn+ssh"
          else
            Addressable::URI.encode_component(
              Addressable::IDNA.unicode_normalize_kc(
                Addressable::URI.unencode_component(
                  self.scheme.strip.downcase)),
              Addressable::URI::CharacterClasses::SCHEME
            )
          end
        else
          nil
        end
      end)
    end