[TUHS] [rick@rbsmith.com: Re: SCCS roach motel]

----- Forwarded message from Rick Smith <rick(a)rbsmith.com> ----- Date: Fri, 13 Dec 2024 18:22:29 -0500 From: Rick Smith <rick(a)rbsmith.com> To: Larry McVoy <lm(a)mcvoy.com> Subject: Re: [TUHS] SCCS roach motel X-Mailer: Apple Mail (2.3826.300.87.4.3) Hi Larry, I likely can???t post to TUHS without joining, though I can read it fine. Anyway, feel free to edit and post: Marc, I remember in 1992 driving to the UCSD library to get that issue of TSE and make make copy of the article. I still have it and wrote about it on HN [1]. The link I posted at the end there is dead (wayback [2]). It is a post by J??rg Schilling about your post here on TUHS about SCCS. Yes, we could get lost in the weeds about choice of control-A, lack of merge bookkeeping and the corner cases with -i and -x when applying strict order to a partial order when computing the graph-to-set but in the big picture, the SCCS system is a huge contribution. Congratulations on writing one of the most influential papers in TSE's first decade! Certainly is that for me. Aside, Larry wrote: The original makepatch() uses it in sccs_getdiffs() which walks the weave calling changestate() once to track weave structure and printstate() twice, generating a diff in one pass. While this is a hats off to Marc, there is also a hats off to Larry for extending the SCCS work with TeamWare and Bitkeeper. I studied SCCS (and other engines). Larry built systems. [1] https://news.ycombinator.com/item?id=26225001 [2] https://web.archive.org/web/20190403213137/http://sccs.sourceforge.net/sccs… ----- End forwarded message ----- -- --- Larry McVoy Retired to fishing http://www.mcvoy.com/lm/boat