Comment Koders Pro Edition (Score 1) 383
(warning, shameless self promotion, BUT I honestly do feel like we have built a product that can help)
I am a product manager at Koders (see http://www.koders.com/ for our Open Source search engine) and we have a product that has helped people in this situation before. If you installed the Pro Edition from our code search suite (http://www.koders.com/gopro/) you will be able to easily search for any code in your index. This can also be helpful when dealing with multiple repositories and has also been extremely useful to QA / Support teams that don't do full time development, but would like to take a look into the code and offer as much info as possible back to development when reporting bugs or escalating customer issues to development.