[bluenose69]

I like seeing (through git-blame or similar) sections of code that were written after-the-fact by a new coder, but that still fit in seamlessly.

I don't mean just in terms of indentation, variable-naming, etc., but also in deeper ways, such as decisions about when to create new functions or extend object structures. Other clues relate to decisions about balancing code flexibility and execution speed, and also about what steps along the journey require road signs.

It's hard to define these things, but I find that the quality of code integration becomes evident when I'm sufficiently immersed in the code that takes the form of a communication between coders.