Fossil actually has some of the most useful comments I've seen in code.
Paraphrasing but
/* here's a weird thing were doing
Here's why
Here's the assumptions that other code is doing
Here's how we're satisfying them temporarily
Here's why this approach is wrong, we should revisit this even though it technically works*/
These comments are actually saving me time in reading and understanding the code. That's pretty rare for code comments
Edit to add: fossil the #plan9 file system, not the VCS






What's the most common complaint I've heard about Linux?