XA RECOVER FORMAT='SQL' requires quotes while XA RECOVER FORMAT=RAW does not

xa start 'tr1#$', 'bq', 3;

insert t1 values (40);

xa end 'tr1#$', 'bq', 3;

xa prepare 'tr1#$', 'bq', 3;

xa recover format='RAW';

+----------+--------------+--------------+---------+

| formatID | gtrid_length | bqual_length | data    |

+----------+--------------+--------------+---------+

|        3 |            5 |            2 | tr1#$bq |

+----------+--------------+--------------+---------+

xa recover format='SQL';

+----------+--------------+--------------+-------------------------+

| formatID | gtrid_length | bqual_length | data                    |

+----------+--------------+--------------+-------------------------+

|        3 |            5 |            2 | X'7472312324',X'6271',3 |

+----------+--------------+--------------+-------------------------+

xa recover format=RAW;

+----------+--------------+--------------+---------+

| formatID | gtrid_length | bqual_length | data    |

+----------+--------------+--------------+---------+

|        3 |            5 |            2 | tr1#$bq |

+----------+--------------+--------------+---------+

xa recover format=SQL;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SQL' at line