My .irbrc file

.irbrc

ARGV.concat ["--readline"]

$LOAD_PATH << "."

require 'rubygems'
require 'pp'

history_file = "#{ENV['HOME']}/.irb-history"
version = "#{RUBY_VERSION}"
if RUBY_DESCRIPTION =~ /Ruby Enterprise Edition (\d{4}\.\d{2})/
  version << "ee#{$1}"
else
  version << "p#{RUBY_PATCHLEVEL}"
end

my_prompt = {
    :PROMPT_I=>"#{version} (%m):%03n:%i> ",
    :PROMPT_N=>"#{version} (%m):%03n:%i> ",
    :PROMPT_S=>"#{version} (%m):%03n:%i%l ",
    :PROMPT_C=>"#{version} (%m):%03n:%i* ",
    :RETURN=>"%s\n"
}
require 'irb/completion'
require 'irb/ext/save-history'
IRB.conf[:SAVE_HISTORY] = 100000
IRB.conf[:HISTORY_FILE] = history_file
IRB.conf[:PROMPT][:MY] = my_prompt
IRB.conf[:PROMPT_MODE] = :MY

if defined?(Rails)
  require 'logger'
  silence_warnings { RAILS_DEFAULT_LOGGER = Logger.new(STDOUT) }
  Rails.logger = RAILS_DEFAULT_LOGGER
  ActiveRecord::Base.logger = RAILS_DEFAULT_LOGGER if defined?(ActiveRecord)
  Mongoid.logger = RAILS_DEFAULT_LOGGER if defined?(Mongoid)
  puts "Redirecting logger to STDOUT"
end