My ~/.pryrc, see http://forum.shakacode.com/t/my-pryrc-for-debugging-and-productivity/364

.pryrc

# See https://github.com/justin808/justin808-dotfiles/blob/master/home/.pryrc
# Using these pry gems
# Essentials
# gem "pry"
# gem "pry-rails"
# gem "pry-byebug"
# gem "pry-doc"
# gem "pry-rescue"

# If you like this one:
# gem "pry-state"

# Probably not so necessary
# gem "pry-toys"

# Do not use pry-stack_explorer as it conflicts with pry-byebug

# Pry::Commands.block_command "noconflict", "Rename step to sstep and next to nnext" do
#   Pry::Commands.rename_command("nnext", "next")
#   Pry::Commands.rename_command("bbreak", "break")
# end

# Pry::Commands.block_command "unnoconflict", "Revert to normal next and break" do
#   Pry::Commands.rename_command("next", "nnext")
#   Pry::Commands.rename_command("break", "bbreak")
# end

## Useful Collections

def a_array
  (1..6).to_a
end

def a_hash
  {hello: "world", free: "of charge"}
end

## Benchmarking
# Inspired by <http://stackoverflow.com/questions/123494/whats-your-favourite-irb-trick/123834#123834>.

def do_time(repetitions = 100, &block)
  require 'benchmark'
  Benchmark.bm{|b| b.report{repetitions.times(&block)}}
end

Pry.config.color = true

# New version of pry uses Pry::Prompt[:nav]
unless defined?(Pry::Prompt)
  Pry.config.prompt =  Pry::NAV_PROMPT
end  

Pry.config.commands.alias_command "h", "hist -T 20", desc: "Last 20 commands"
Pry.config.commands.alias_command "hg", "hist -T 20 -G", desc: "Up to 20 commands matching expression"
Pry.config.commands.alias_command "hG", "hist -G", desc: "Commands matching expression ever used"
Pry.config.commands.alias_command "hr", "hist -r", desc: "hist -r <command number> to run a command"

if defined?(PryByebug)
   def pry_debug
     puts "You can also call 'pd' to save typing!"
     pd
   end

   def pp(obj)
    Pry::ColorPrinter.pp(obj)
   end

   # Shortcut for calling pry_debug
   def pd
     Pry.commands.alias_command 't', 'backtrace'
     Pry.commands.alias_command 's', 'step'
     Pry.commands.alias_command 'n', 'next'
     Pry.commands.alias_command 'c', 'continue'
     Pry.commands.alias_command 'f', 'finish'
     Pry.commands.alias_command 'u', 'up'
     Pry.commands.alias_command 'd', 'down'
     Pry.commands.alias_command 'b', 'break'
     Pry.commands.alias_command 'w', 'whereami'

     puts "Installed debugging Shortcuts"
     puts 'w  :  whereami'
     puts 's  :  step'
     puts 'n  :  next'
     puts 'c  :  continue'
     puts 'f  :  finish'
     puts 'pp(obj)  :  pretty print object'
     puts ''
     puts 'Stack movement'
     puts 't  :  backtrace'
     puts 'ff :  frame'
     puts 'u  :  up'
     puts 'd  :  down'
     puts 'b  :  break'
     ""
   end

   # def pry_rails
   #   puts "You can also call 'pr' to save typing!"
   #   pr
   # end

   # # Shortcut for calling pry_debug
   # def pr
   #   # Seems these are now loaded automatically in newer Rails
   #   # require 'factory_bot';
   #   # FactoryBot.find_definitions
   #   puts "Added factory support"
   # end

   # Longer shortcuts that don't conflict
   Pry.commands.alias_command 'ff', 'frame'
   Pry.commands.alias_command 'ss', 'step'
   Pry.commands.alias_command 'nn', 'next'
   Pry.commands.alias_command 'cc', 'continue'
   Pry.commands.alias_command 'fin', 'finish'
   Pry.commands.alias_command 'uu', 'up'
   Pry.commands.alias_command 'dd', 'down'
   Pry.commands.alias_command 'bb', 'break'
   Pry.commands.alias_command 'ww', 'whereami'
end

begin
  require 'awesome_print'
  # Pry.config.print = proc { |output, value| output.puts value.ai }
  AwesomePrint.pry!
rescue LoadError => err
  puts "no awesome_print :("
end

my_hook = Pry::Hooks.new.add_hook(:before_session, :add_dirs_to_load_path) do
  # adds the directories /spec and /test directories to the path if they exist and not already included
  dir = `pwd`.chomp
  dirs_added = []
  %w(spec test presenters lib).map{ |d| "#{dir}/#{d}" }.each do |p|
    if File.exist?(p) && !$:.include?(p)
      $: << p
      dirs_added << p
    end
  end
  puts "Added #{ dirs_added.join(", ") } to load path in ~/.pryrc." if dirs_added.present?
end

# Hit Enter to repeat last command
Pry::Commands.command /^$/, "repeat last command" do
  _pry_.run_command Pry.history.to_a.last
end

my_hook.exec_hook(:before_session)


puts "Loaded ~/.pryrc"
puts
def more_help
  puts "Helpful shortcuts:"
  puts "hh  : hist -T 20       Last 20 commands"
  puts "hg : hist -T 20 -G    Up to 20 commands matching expression"
  puts "hG : hist -G          Commands matching expression ever used"
  puts "hr : hist -r          hist -r <command number> to run a command"
  puts

  puts "Samples variables"
  puts "a_array  :  [1, 2, 3, 4, 5, 6]"
  puts "a_hash   :  { hello: \"world\", free: \"of charge\" }"
  puts
  puts "helper   : Access Rails helpers"
  puts "app      : Access url_helpers"
  puts
  puts "require \"rails_helper\"              : To include Factory Girl Syntax"
  puts "include FactoryGirl::Syntax::Methods  : To include Factory Girl Syntax"
  puts
  puts "or if you defined one..."
  puts "require \"pry_helper\""
  puts
  puts "Sidekiq::Queue.new.clear              : To clear sidekiq"
  puts "Sidekiq.redis { |r| puts r.flushall } : Another clear of sidekiq"
  puts
  puts "Debugging Shortcuts"
  puts 'ss  :  step'
  puts 'nn  :  next'
  puts 'cc  :  continue'
  puts 'fin :  finish'
  puts 'uu  :  up'
  puts 'dd  :  down'
  puts 'bb  :  break'
  puts 'w   :  whereami'
  puts 'ff  :  frame'
  puts 't   :  backtrace'
  puts '$   :  show whole method of context'
  puts
  puts "Run 'pry_debug' or 'pd' to display shorter debug shortcuts"
  # puts "Run 'pry_rails' or 'pr' run rails helpers"
  puts "Run `require 'factory_girl'; FactoryBot.find_definitions` for FactoryBot"
  ""
end

puts "Run 'more_help' to see tips"