class Diff::LCS::Hunk

was skipped.
a truthy value so that if there is no overlap, you can know the merge
Merges this hunk and the provided hunk together if they overlap. Returns

def merge(hunk)
  return unless overlaps?(hunk)
  @start_old = hunk.start_old
  @start_new = hunk.start_new
  blocks.unshift(*hunk.blocks)
end