FYI, I confirmed the same patch applies and works OK for tags/REL_15_BETA2.
------ [postgres@CentOS7-x64 ~]$ psql --version psql (PostgreSQL) 15beta2 [postgres@CentOS7-x64 ~]$ psql psql (15beta2) Type "help" for help. postgres=# create subscription mysub connection 'blah' publication mypub with ( <press-tab> BINARY COPY_DATA DISABLE_ON_ERROR SLOT_NAME SYNCHRONOUS_COMMIT CONNECT CREATE_SLOT ENABLED STREAMING TWO_PHASE postgres=# create subscription mysub connection 'blah' publication mypub with ( ------ Kind Regards, Peter Smith. Fujitsu Australia