def get_short_help_str(self, limit=45):
        """Gets short help for the command or makes it by shortening the
        long help string.
        """
        return (
            self.short_help
            or self.help
            and make_default_short_help(self.help, limit)
            or ""
        )
Gets short help for the command or makes it by shortening the
        long help string.
        
dynaconf/vendor/click/core.py