Implementation of Jean-Philippe Bernardy's A Pretty But Not Greedy Printer (Functional Pearl). PACMPL 1(ICFP): 6:1-6:21 (2017) in OCaml.
The author of the paper has a version in Haskell.

I make no promises about performance.

Documentation

Installation

This package is on OPAM:

opam install prettiest

Examples

A version of the sexpr example is included in the test folder.

That folder also includes a larger example of pretty printing types.