There is one very important tip that's missing: Follow the original coding style exactly.
Not just spaces vs tabs or block styles, but idioms and other idiosyncrasies, too. Why? Imagine reading a source repo where every second block uses different bracket styles, mixing spaces with tabs and so on. It's going to look like a kludgy mess, and will be distracting to read.
There is no correct style for most languages (perhaps `go fmt` might be an exception), only opinions.
Not just spaces vs tabs or block styles, but idioms and other idiosyncrasies, too. Why? Imagine reading a source repo where every second block uses different bracket styles, mixing spaces with tabs and so on. It's going to look like a kludgy mess, and will be distracting to read.
There is no correct style for most languages (perhaps `go fmt` might be an exception), only opinions.