class Pry class Command::Bang < Pry::ClassCommand match '!' group 'Editing' description 'Clear the input buffer. Useful if the parsing process goes ' \ 'wrong and you get stuck in the read loop.' command_options :use_prefix => false def process output.puts 'Input buffer cleared!' eval_string.replace('') end end Pry::Commands.add_command(Pry::Command::Bang) end