Creates a new input method object
 
               # File irb/input-method.rb, line 48
def initialize
  super
  @line_no = 0
  @line = []
  @stdin = IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
  @stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
end
             
            The external encoding for standard input.
 
               # File irb/input-method.rb, line 91
def encoding
  @stdin.external_encoding
end
             
            Whether the end of this input method has been reached, returns true if there is no more data to read.
See IO#eof? for more information.
 
               # File irb/input-method.rb, line 69
def eof?
  @stdin.eof?
end
             
            Reads the next line from this input method.
See IO#gets for more information.
 
               # File irb/input-method.rb, line 59
def gets
  print @prompt
  line = @stdin.gets
  @line[@line_no += 1] = line
end