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56af4d4a74
We look for similar flag names via Jaccard index on ngrams. In my experience this tends to work better than Levenshtein or other edit distance based metrics. Principally because it allows for out-of-order suggestions. For example, --case-smart will result in a suggestion for --smart-case, even though the edit distance between them is pretty big. This is something Clap did for us. I initially thought it wasn't necessary to add this back in, but I realized it wouldn't be much work and might actually be helpful to folks.