This is a thing you can credibly say only if you've never used a popular new non-mainline editor. Sublime Code was "buggy as hell" too; all new editors are. Editors are incredibly difficult to do well. And Zed is doing it on hard mode, cross-platform.
I have this DVD set in my basement. Technically, there are still methods for estimating the probability of unseen ngrams. Backoff (interpolating with lower grams) is an option. You can also impose prior distributions like a Bayesian so that you can make "rational" guesses.
Ngrams are surprisingly powerful for how little computation they require. They can be trained in seconds even with tons of data.
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