Raising an Exception and keeping the backtrace

gistfile1.rb

class A
  def self.ouch
    raise "blarrrghhh"
  end
end

class B
  def self.ouch
    begin
      A.ouch
    rescue Exception => e
      raise e, "#{e} I said!!!", e.backtrace
    end
  end
end

begin
  B.ouch
rescue Exception => e
  p e
  p e.backtrace
end