module Diff::LCS

:yields self[i] if there are matched subsequences:
lcs = seq1.lcs(seq2)

+self+ and +other+. See Diff::LCS#LCS.
Returns an Array containing the longest common subsequence(s) between

def lcs(other, &block) #:yields self[i] if there are matched subsequences:
  Diff::LCS.lcs(self, other, &block)
end