module Byebug::EnableDisableFunctions

def enable_disable_display(is_enable, args)
  if 0 == @state.display.size
    errmsg "No display expressions have been set.\n"
    return
  end
  args.each do |pos|
    pos = get_int(pos, "#{is_enable} display", 1, @state.display.size)
    return nil unless pos
    @state.display[pos-1][0] = ('Enable' == is_enable)
  end
end