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levenshtein

number levenshtein(text1, text2)

Returns the Levenshtein distance between text1 and text2, used to check texts for similarity.

For a normalized distance use levenshtein(text1, text2) / max(#text1, #text2)

Parameters

1. text1 — first text.
2. text2 — second text.

Returns

• the metric distance, 0 if texts are equal, at most the length of the longer text.