Franco Fichtner recently received commit rights for DragonFly. This is so he could import mdocml, a OpenBSD-originating replacement for groff and man page display. Mdocml has been mentioned before on the Digest, and there’s a downloadable book. (See the more-interesting-than-it-sounds History of UNIX Manpages there too, but I digress.)
One advantage of using mdocml, as I understand it, is that groff is no longer required to view man pages. The only thing left in DragonFly that required a C++ compiler was groff. So, rebuilding could be a bit faster, and a bit less complicated.
Here’s the part that makes me happy: Changes made in DragonFly promptly made it back into NetBSD’s mdocml. Other changes rolled from DragonFly back into OpenBSD, too, and mdocml is in FreeBSD 10, though I don’t have a src change to point at right now. It all circled back around to DragonFly, too. It’s really neat to have a BSD-grown cross-BSD product.
(Incidentally, if you have a Thinkpad and keyboard issues, Franco has a patch for you to try.)