new

# File lib/uri/mailto.rb, line 133
    def initialize(*arg)
      super(*arg)

      @to = nil
      @headers = []

      # The RFC3986 parser does not normally populate opaque
      @opaque = "?#{@query}" if @query && !@opaque

      unless @opaque
        raise InvalidComponentError,
          "missing opaque part for mailto URL"
      end
      to, header = @opaque.split('?', 2)
      # allow semicolon as a addr-spec separator
      # http://support.microsoft.com/kb/820868
      unless /\A(?:[^@,;]+@[^@,;]+(?:\z|[,;]))*\z/ =~ to
        raise InvalidComponentError,
          "unrecognised opaque part for mailtoURL: #{@opaque}"
      end

      if arg[10] # arg_check
        self.to = to
        self.headers = header
      else
        set_to(to)
        set_headers(header)
      end
    end