ALTER TABLE ... CONVERT ... PARTITION doesn't encode partition names

--source include/have_partition.inc

create table t1 (a int) partition by list (a) (

  partition p0 values in (5),

  partition `foo-bar` values in (7)

);

insert t1 values (5),(7);

alter table t1 convert partition `foo-bar` to table t2;

alter table t1 convert table t2 to partition `foo-bar` values in (7);

select * from t1;

drop table t1;