Customize pp output

custom_prettyprint.rb

require 'pp'

class PP
  module PPMethods
    def seplist(list, sep=nil, iter_method=:each) # :yield: element
      sep ||= lambda { comma_breakable }
      first = true

      nest(1) {
        breakable
        list.__send__(iter_method) {|*v|
          if first
            first = false
          else
            sep.call
          end
          yield(*v)
        }
        nest(-2) {
          breakable
        }
      }
    end
  end
end


obj = {"data"=>{1=>"one", 2=>"two", 3=>"three"}, "name"=>["homu", "mami", "mado", "miki", "saku"]}
PP.pp obj, $>, 20

output

{
  "data"=>
   {
     1=>"one",
     2=>"two",
     3=>"three"
   },
  "name"=>
   [
     "homu",
     "mami",
     "mado",
     "miki",
     "saku"
   ]
}