class Docopt::Either

# File lib/docopt.rb, line 355
def match(left, collected=nil)
  collected ||= []
  outcomes = []
  for p in self.children
    matched, _, _ = found = p.match(left, collected)
    if matched
      outcomes << found
    end
  end

  if outcomes.count > 0
    return outcomes.min_by do |outcome|
      outcome[1] == nil ? 0 : outcome[1].count
    end
  end
  return [false, left, collected]
end