class Byebug::InfoCommand::DisplayCommand

def self.description
  <<-DESCRIPTION
    inf[o] d[display]
    #{short_description}
  DESCRIPTION
end

def self.regexp
  /^\s* d(?:isplay)? \s*$/x
end

def self.short_description
  "List of expressions to display when program stops"
end

def execute
  return puts("There are no auto-display expressions now.") unless Byebug.displays.find { |d| d[0] }
  puts "Auto-display expressions now in effect:"
  puts "Num Enb Expression"
  Byebug.displays.each_with_index do |d, i|
    interp = format(
      "%<number>3d: %<status>s  %<expression>s",
      number: i + 1,
      status: d[0] ? "y" : "n",
      expression: d[1]
    )
    puts(interp)
  end
end