Hello alls, I am intervening a bit late, but I believe I can clarify some little things about *roff families:
> Larry Kollar <larry.kol...@me.com> wrote: > > John Gardner <gardnerjo...@gmail.com> wrote: > > 1. *GNU Troff <https://www.gnu.org/software/groff/>* (~1989/1990 ‒ > > present) > > 2. mandoc <http://mandoc.bsd.lv> *[1]* (2008 ‒ present) > > 3. *Heirloom Doctools <https://github.com/n-t-roff/heirloom-doctools>* > > (? ‒ present) Heirloom doctools began as a fork of Solaris troff. And there are actually two repositories of the heirloom doctools: - the original Gunnar Ritter's (now abandonned) version: <heirloom.sourceforge.net/doctools.html> - Karsten Kunze's version, which fixes some bugs of Ritter's version: <https://github.com/n-t-roff/heirloom-doctools>. It seems a bit abandonned too. > > 4. *DWB 3.3 <https://github.com/n-t-roff/DWB3.3>* (???? ‒ 1993ish) > > 5. *Solaris 10 ditroff <https://github.com/n-t-roff/Solaris10-ditroff>* > > (1980s ‒ ?) Solaris troff is where heirloom comes from. It's official repository is on the solaris project, the github/n-t-roof being only a fork. > > 6. *Plan9 Troff <https://github.com/n-t-roff/Plan9_troff> *(???? ‒ > > present) > > 7. 9front Troff <https://github.com/n-t-roff/9front_troff> (???? ‒ ????) Then again, these two have their official sources tree on respectively plan9 and 9front repositories, and I bet they are regularly synchronised together. > > 8. Utroff <http://utroff.org> (Which I know nothing about) The name is probably confusing, but Utroff does not share *roff, only macros and utilities. They are made to be used with heirloom doctools, and I advise to use their most recent version (Kunze's, on github). > You’re missing neatroff — https://github.com/aligrudi/neatroff > > I think both Neatroff and Heirloom are based on Plan9, FWIW. As far as I know, Neatroff is not based on any other troff. It has been written from scratch. Kind regards, Pierre-Jean.
