# File lib/monkey.rb, line 11
  def self.invisible(*from)
    yield
  rescue Exception => error
    unless show_invisibles?
      from << caller.first[/^[^:]*/] if from.empty?
      from << __FILE__
      delete_from_backtrace(error) { |l| from.any? { |f| l.include? f } }
    end
    raise error
  end