[tanoku]

Oh OK, you have clearly spent more time thinking about this problem than the team of engineers at GitHub who've been researching code search at scale for more than four years. I bet they feel real silly right now knowing they could have shipped this search engine in a couple weeks taping together off-the-shelf libraries if they only had your talent for software architecture.

[rurban]

Sure, I did. I've implemented a proper search for a very big companies document and knowledge base. Similar to gmane, which also used xapian. Much better than what I see there. Or with the old google code search