class Utils::Grepper

def search
  suffixes = @args['I'].ask_and_send(:split, /[\s,]+/).to_a
  find(*(@roots + [ { :suffix => suffixes } ])) do |filename|
    match(filename)
  end
  if @args['L'] or @args['e']
    @paths = @paths.sort_by do |path|
      pair = path.split(':')
      pair[1] = pair[1].to_i
      pair
    end
  else
    @paths.sort!
  end
  self
end