mini-irb.rb

%w{readline rubygems bond}.each {|e| require e }
Bond.start
history_file = File.join(ENV["HOME"], '.mini_irb_history')
IO.readlines(history_file).each {|e| Readline::HISTORY << e.chomp } if File.exists?(history_file)
while (input = Readline.readline('>> ', true)) != 'exit'
  begin puts "=> #{eval(input).inspect}"; rescue Exception; puts "Error: #{$!}" end
end
File.open(history_file, 'w') {|f| f.write Readline::HISTORY.to_a.join("\n") }