The remembered answers are keyed on user input and never evicted: a long session could grow the map without bound. Clear it at 10000 words and let it refill - a script repeats the same words, so re-checks are cheap.
The remembered answers are keyed on user input and never evicted: a long session could grow the map without bound. Clear it at 10000 words and let it refill - a script repeats the same words, so re-checks are cheap.