A exception wrapper to collect both stack traces. e.g. this error was thrown here -- WRAPPED BACKTRACE -- the original error was thrown there Source: http://www.drmaciver.com/2013/03/a-manifesto-for-error-reporting/

gistfile1.rb

class A
  def self.b
    begin
       raise TypeError
    rescue => e
       raise MyLibrarySpecificException.new(e)
    end
  end
end

class MyLibrarySpecificException < StandardError
  attr_reader :wrapped_exception

  def initialize(wrapped_exception)
    super("Wrapped #{wrapped_exception.class}: #{wrapped_exception.message}")
    @wrapped_exception = wrapped_exception
  end

  def backtrace
    "#{super} #{['---WRAPPED EXCEPTION---']} #{wrapped_exception.backtrace}"
  end
end

A.b