Parsed test spec with 3 sessions

starting permutation: s1_init s0_begin s0_topwrite s0_outer s0_inner s0_catinsert1 s0_release_inner s0_rollback_outer s2_vacuum s0_catinsert2 s0_commit s1_get_changes
step s1_init: SELECT 'init' FROM pg_create_logical_replication_slot('tuplecid_nested_slot', 'test_decoding');
?column?
--------
init    
(1 row)

step s0_begin: BEGIN;
step s0_topwrite: INSERT INTO tbl1 VALUES (0);
step s0_outer: SAVEPOINT outer_sp;
step s0_inner: SAVEPOINT inner_sp;
step s0_catinsert1: INSERT INTO user_cat VALUES (5, 'e');
step s0_release_inner: RELEASE SAVEPOINT inner_sp;
step s0_rollback_outer: ROLLBACK TO SAVEPOINT outer_sp;
step s2_vacuum: VACUUM user_cat;
step s0_catinsert2: INSERT INTO user_cat VALUES (6, 'f');
step s0_commit: COMMIT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('tuplecid_nested_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0') WHERE data NOT LIKE '%user_cat%';
data                                      
------------------------------------------
BEGIN                                     
table public.tbl1: INSERT: val1[integer]:0
COMMIT                                    
(3 rows)

?column?
--------
stop    
(1 row)