gistfile1.rb

class Exception
  def pretty
    trace = backtrace.select{ |l|l.start_with?(Rails.root.to_s) }.join("\n    ")
    "#{self.class}\n#{message}\n#{trace}\n"
  end
end

Right, or

task :do_stuff do
  User.all.each do |user|
    begin
      user.wow!
    rescue e
      Airbrake.notify "User id: #{user.id}\n#{PrettyException.new(e)}"
    end
  end
end

Ah I get it. Yes you could I think. Personally I'm not always opposed to adding methods to an object, so e.pretty would be fine with me. I haven't used SImpleDelegator before though, that's useful.