plinux, I think this is not needed similarly to MDEV-11400. In MariaDB you don't need to modify whole lot of files to add new table option. E.g. TokuDB compression is implemented like: https://github.com/MariaDB/server/blob/10.1/storage/tokudb/tokudb_sysvars.cc#L1142

Sorry, I meant MDEV-11399.

svoj MariaDB prefer to use Session variables, but we prefer to modify the syntax, different styles, but the effect is the same. So you can ignore this issue.

Not really, CREATE TABLE syntax is also extended in MariaDB and it is covered by test cases. E.g. tokudb_mariadb.compression has:

create table t4 (a text) engine=tokudb compression=tokudb_lzma;

Closing per plinux comment.