inner exceptions.rb

class NException < StandardError
  attr_reader :inner_exception

  def initialize(message, inner_exception = nil)
    super(message)
    @inner_exception = inner_exception
  end
end

def sasi
  begin
    p 'begin'
    raise NException.new('first_exception')
  rescue => ex
    e = NException.new('sasi in rescue', ex)
    raise e
  end  
end
    

begin
  sasi()
rescue => ex
  pp ex.backtrace
  pp ex.inner_exception.backtrace
end;1