Interestingly, for over 30 years, C has had “indent” https://www.gnu.org/software/indent/manual/indent.html

What are the defaults, though, as not everyone seems to agree with GNU coding style?

>First off, I’d suggest printing out a copy of the GNU coding standards, and NOT read it. Burn them, it’s a great symbolic gesture.

https://www.kernel.org/doc/html/v4.10/process/coding-style.h...