Ikegami, that is indeed precisely what I was after.
One small question, if you may:
Is there a way that I can know which part (beg-end) of each of the two strings I provide is covered by the LCSS?
Many thanks!

In reply to Re^3: Longest common substring with N mismatches by Anonymous Monk
in thread Longest common substring with N mismatches by Anonymous Monk

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