Well, you probably sort-of can do that with open source projects that integrate version control and bug tracking. In these repositories you will find lots of co

Well, you probably sort-of can do that with open source projects that integrate version control and bug tracking. In these repositories you will find lots of commits names "Fixes #42". The problem, I think, is that making a statistical n-gram model of a programming language doesn't look like it can produce encouraging results (think locally balanced-like, but globally unbalanced parenthesis, which should pop up often in ngrams for parentheses more than n tokens apart). The upper side is that you can get a tokenizer "for free" using the language's own grammar.