Cmd function only accept Prompt for waitfor

I deal with a server that never send any prompt. So the cmd can't find any match string. I tried a correction (given here). I suggest to have a cmd option and to be able to send either a Prompt or a Match or a String option to the wait for to avoid the raise of a "tile out while waiting for more data". Is my solution correct ? Could it be possible to include this kind of solution in a next version of this project ?

def cmd(options) # :yield: recvdata
  match = @options["Prompt"]
  time_out = @options["Timeout"]
  fail_eof = @options["FailEOF"] 
  typeMatch = "Prompt"
  if options.kind_of?(Hash)
    cmd   = options["Cmd"] if options.has_key?("String")
    if options.has_key?("String")
      match    = options["String"]
      typeMatch="String"
    end
    if options.has_key?("Match")
      match    = options["Match"]
      typeMatch="Match"
    end
    time_out = options["Timeout"] if options.has_key?("Timeout")
    fail_eof = options["FailEOF"] if options.has_key?("FailEOF")
  else
    cmd = options
  end
  self.puts(cmd)
  if block_given?
    waitfor({typeMatch => match, "Timeout" => time_out, "FailEOF" => fail_eof}){|c| yield c }
  else
    waitfor({typeMatch => match, "Timeout" => time_out, "FailEOF" => fail_eof})
  end
end

Start by reading the cmd and waitfor entry points, focusing on how cmd selects its wait condition and how waitfor handles Prompt, Match, and String options. Define the supported option behavior and verify that a command can wait for a match or string without raising the timeout described in the issue.