PP::PPMethods#pp_object

# File tmp/rubies/ruby-3.1.3/lib/pp.rb, line 265
def pp_object(obj)
  object_address_group(obj) {
    seplist(obj.pretty_print_instance_variables, lambda { text ',' }) {|v|
      breakable
      v = v.to_s if Symbol === v
      text v
      text '='
      group(1) {
        breakable ''
        pp(obj.instance_eval(v))
      }
    }
  }
end