There's something amusing about the source code to a pretty printer not conforming to its own defaults.
Also, from the README:
| Some history. Way back in 1976, the project I worked on at the
| University of Illinois Center for Advanced Computation had a huge
| battle about how to format C code. After about a week of fighting, I
| got disgusted and wrote a program, which I called indent, to reformat C
| code. It had a bunch of different options that would let you format
| the output the way you liked. In particular, all of the different
| formats being championed were supported.