pry.rb

  # As a REPL, we often want to catch any unexpected exceptions that may have
  # been raised; however we don't want to go overboard and prevent the user
  # from exiting Pry when they want to.
  module RescuableException
    def self.===(exception)
      case exception
        # Catch when the user hits ^C (Interrupt < SignalException), and assume
        # that they just wanted to stop the in-progress command (just like bash etc.)
      when Interrupt
        true
        # Don't catch signals (particularly not SIGTERM) as these are unlikely to be
        # intended for pry itself. We should also make sure that Kernel#exit works.
      when *Pry.config.exception_whitelist
        false
        # All other exceptions will be caught.
      else
        true
      end
    end
  end