project pretty-printing is really slow for large projects

[abingham]

For example, on a project with ~16k files, pretty-printing is taking well over a minute. This includes operations like prosjekt-setup and prosjekt-save, both of which end up using cl-prettyprint. Is there a faster alternative? Perhaps a custom alternative? Or perhaps the 'pp' library: http://stackoverflow.com/questions/3552106/pprint-in-emacs-lisp