Apparently (according to this) Mac Office is 30,000,000 lines of code, that’s a lot of code to try to keep bug free! Out of curiosity, I downloaded a utility to count lines of code and found that RvSnoop is only ~7,000 lines of code. That’s only counting non-comment lines, I don’t know how well commented the MS codebase is.
Not that there’s any real comparison in functionality between the two of course!
