Optional ReadonlyallowReadonlycharThe trigger sequence, e.g. '@', '/', ':'.
ReadonlyitemsItems for a query; async providers are raced (stale results dropped).
ReadonlyonAn item was chosen (Enter/Tab, or programmatically via select).
ReadonlyonRender hook: the current popup state, or null when closed.
Optional ReadonlystartOnly match when the trigger sits at the very start of the block.
Allow whitespace inside the query (multi-word item names).