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Reduce cost of deletion in levenstein distance (4 -> 3)
Before this patch, a character deletion has the same cost as 2 swaps, or 4 additions, so Git prefers suggesting a completely scrambled command name to removing a character. For example, "git tags" suggests "stage", but not "tag". By setting the deletion cost to 3, we keep it higher than swaps or additions, but prefer 1 deletion to 2 swaps. "git tags" now suggests "tag" in addition to staged. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <firstname.lastname@example.org>
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