CREATE TABLE parent (a int) PARTITION BY RANGE (a);
CREATE TABLE part1 PARTITION OF parent FOR VALUES FROM (0) TO (100);
CREATE PUBLICATION pub FOR ALL TABLES;   -- default publish_via_partition_root = false
SELECT pg_create_logical_replication_slot('slot', 'pgoutput');

-- Session 1: hold a snapshot so DETACH CONCURRENTLY has to wait
BEGIN ISOLATION LEVEL REPEATABLE READ;
SELECT count(*) FROM parent;

-- Session 2: start the detach and let it time out, leaving part1 detach-pending
SET statement_timeout = '1s';
ALTER TABLE parent DETACH PARTITION part1 CONCURRENTLY;
-- ERROR: canceling statement due to statement timeout

-- Session 1:
COMMIT;

-- Any session:
SELECT inhdetachpending FROM pg_inherits WHERE inhrelid = 'part1'::regclass;  -- t
INSERT INTO part1 VALUES (1);
SELECT count(*) FROM pg_logical_slot_get_binary_changes('slot', NULL, NULL,
       'proto_version', '4', 'publication_names', 'pub');