No relevant results for "master.key" (first and only thing I tried searching for), so I assume they have figured out some awesome way to detect these files base

No relevant results for "master.key" (first and only thing I tried searching for), so I assume they have figured out some awesome way to detect these files based on their contents. Or the heuristics are closed-source. https://github.com/search?q=org%3Asourcegraph+master.key&type=code https://github.com/search?q=org%3Asourcegraph+master.key&typ... https://medium.com/@thorntonbrenden/rails-and-the-legendary-master-key-15c8be7799f1 https://medium.com/@thorntonbrenden/rails-and-the-legendary-...