# File cli/ruby-debug/interface.rb, line 217
    def initialize(file, out, verbose=false)
      super()
      @command_queue = []
      @file = file.respond_to?(:gets) ? file : open(file)
      @out = out
      @verbose = verbose
      @history_save = false
      @history_length = 256  # take gdb default
      @histfile = ''
    end