module Byebug::DisplayFunctions

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

def display_expression(exp)
  print "#{exp} = #{debug_silent_eval(exp).inspect}\n"
end

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