class Array
  def sfilter *filters
    filters = filters.first if filters.size == 1 and filters.first.is_a?(Array)
    filters.collect!{|o| o.is_a?(Regexp) ? o : /#{Regexp.escape o}/}
    self.select do |line|
      !filters.any?{|re| line =~ re}
    end
  end
end