Method error_on_diff

scripts/format_code.py:208–216

(self, msg)

        self.error_diff=error_diff

    def error_on_diff(self, msg):
        retval = 0
        if self.error_diff:
            diff = self.shell.run_single_to_str("git diff")
            if len(diff) > 0:
                retval = -1
                logger.error(diff)
                logger.error("\n"+msg)
        return retval

    def run(self):
        if len(self.files) < 1: