module Byebug::DisplayFunctions

def active_display_expressions?
  @state.display.select{|d| d[0]}.size > 0
end

def display_expression(exp)
  print "%s = %s\n", exp, debug_silent_eval(exp).to_s
end

def print_display_expressions
  n = 1
  for d in @state.display
    if d[0]
      print "%d: ", n
      display_expression(d[1])
    end
    n += 1
  end
end