Event firing and exception conversion around command execution.
        Common exceptions are run through our exception handler for
        pretty-printing or debugging and then converted to SystemExit so the
        interpretor will exit without further ado (or be caught if
        interactive).

def execute(self, command, args):
        """ Event firing and exception conversion around command execution.
        Common exceptions are run through our exception handler for
        pretty-printing or debugging and then converted to SystemExit so the
        interpretor will exit without further ado (or be caught if
        interactive). """
        self.fire_event('precmd', command, args)
        try:
            try:
                result = command.run_wrap(args)
            except BaseException as e:
                self.fire_event('postcmd', command, args, exc=e)
                raise e
            else:
                self.fire_event('postcmd', command, args, result=result)
                return result
        except BrokenPipeError as e:
            _vprinterr('<dim><red>...broken pipe...</red></dim>')
            raise SystemExit(1) from e
        except KeyboardInterrupt as e:
            _vprinterr('<dim><red>...interrupted...</red></dim>')
            raise SystemExit(1) from e
        except SystemExit as e:
            if e.args and not isinstance(e.args[0], int):
                _vprinterr("<red>%s</red>" % e)
                raise SystemExit(1) from e
            raise e
        except Exception as e:
            self.handle_command_error(command, args, e)
            raise SystemExit(1) from e