What kind of index is Google using here?
wooster: AFAIK, Google Code Search was written by Russ Cox, who also wrote this: http://swtch.com/~rsc/regexp/regexp1.htmlMy guess, back when I was doing code search at Apple, was that he was actually scanning all the docs with his fast regexp, which would be do-able with the number of machines at his disposal + the expected traffic.If anyone knows any differently, I'm all ears. :)