Great #70s lisp #ITS / #DDT / #TECO / #EMACS / #LISP #demo by kent last week in which I was using a bad microphone: https://gamerplus.org/@screwlisp/116509365146222450 if anyone missed it.

@kentpitman @prahou @davidrevoy @bagder @chiply @yantar92 @jackdaniel @mdhughes

screwlisp (@[email protected])

Attached: 1 image Hey everyone, we are going to do the livestream around now #archive https://toobnix.org/w/c7AV5CfaYYJaX1gqV4B9L1 #lispyGopherClimate @[email protected] #demo of #teco , #ITS #emacs #peertube #live ! Going live in a few minutes, for some number of minutes. Retoots welcome. Will make the regular toot post ex facto at 8UTC Sunday (one hour from now).

G+DBN

a repost from sachac emacs summary, golden nuggets of vintage computing:

"Kent Pitman #demo 1977-1984 #MIT #ITS #DDT #TECO #EMACS #LISP #maclisp

https://toobnix.org/w/c7AV5CfaYYJaX1gqV4B9L1

#vintage #computing

Public Lispy Gopher Climate sunday Morning in Europe stream - 5/3/2026, 7:06:00 AM

PeerTube

@vnikolov
Sorry I had an unexpected (uninvited!) guest who messed up my weekend a bit, so we started an hour early. Anyway, it was quite a revelation to me to see kent using #MIT #ITS #DDT -> #TECO -> #EMACS .

Can I ask what your personal early lisp experience was like?

@kentpitman

Hey everyone, we are going to do the livestream around now

#archive
https://toobnix.org/w/c7AV5CfaYYJaX1gqV4B9L1

#lispyGopherClimate

@kentpitman #demo of #teco , #ITS #emacs #peertube #live !

Going live in a few minutes, for some number of minutes. Retoots welcome.

Will make the regular toot post ex facto at 8UTC Sunday (one hour from now).

Kent Pitman and Ramin Honary join on #commonLisp #lisp #IDE #emacs #schemacs #UX #lispyGopherClimate

https://toobnix.org/w/eCCvKBZvuwkXj244ojjzTU

Kent Pitman and Ramin Honary join on #commonLisp #lisp #IDE #emacs #schemacs #UX #lispyGopherClimate

PeerTube

Every 0UTC Wednesday!
there will of course be the Tuesday-evening-in-the-Americas #lispyGopherClimate #live on
#archive
https://toobnix.org/w/eCCvKBZvuwkXj244ojjzTU
!

- show starts with @kentpitman #haiku and a discussion of the #climateCrisis

Kent and Ramin will join today for a discussion of #lisp #IDE s.
Kent scanned his historical c. 1980 #TECO #emacs cheatsheet: https://climatejustice.social/@kentpitman/116484262128356625
Ramin's #schemacs https://emacsconf.org/2025/talks/schemacs/
viz Smith's new mine #staticTyping #coalton ide.

+ the emacs/ide ecosystem.

I ran across and scanned an old document recently that describes the command set for TECO-based Emacs on the MIT ITS operating system in the very early 1980s, probably, although the document is not dated.

I think I either produced it, or had a hand in how it was produced. But in any case, the grouping and layout suits me in terms of describing why certain commands are related to one another, and making it easier to see why particular letters were chosen as mnemonics.

TECO was the language Emacs was originally implemented in, before it was ported to gnu. ITS was an MIT-written operating system for the Digital Equipment Corporation (DEC) PDP-10, a main frame processor whose architecture also spanned the TOPS-20 operating system (though I'm blurring some details).

http://nhplace.com/kent/History/emacs/Emacs-Command-Index.pdf

This is part of an ongoing project where I'm sifting some things in boxes at my house, trying to get rid of stuff I don't need. Some of it is getting scanned, other things just going to the trash.

#emacs #ComputerHistory #ITS #TECO #Lisp #KentsHistoryProject

A brief history and introduction to the TECO text editor on TOPS-10.

https://timereshared.com/tops-10-teco-editor

#TECO #dec #editor #retrocomputing

TOPS-10: The TECO editor · Time Reshared

Kent M. Pitman Eliza #DL #AI #TECO #lispyGopherClimate

https://toobnix.org/w/5QbQiLw7zrFiETgbv32kJk

Kent M. Pitman Eliza #DL #AI #TECO #lispyGopherClimate

PeerTube
tom jennings (@[email protected])

Wow. Is/was this common knowledge? Is it correct? "Well, there was the original Emacs - Editing MACroS? - a set of TECO macros running on the version of TECO implemented under ITS on the DEC machine at the MIT AI labs. " (I think that machine was a DEC-10 or DEC-20, but could be wrong.) Stallman created EMACS by merging and regularizing several macro packages already in use. It became the default editor at the labs, and Stallman commented later that he realized how much it had become the standard when he no longer recalled how to perform the operations in raw TECO. Stallman's macros relied on the Control-R mode in ITS TECO which permitted interactive use. I don't believe that was present in standard TECO off a DECUS tape. There was a Video TECO package not related to Emacs that provided screen editing features on a VT52 or VT100. " -- https://texteditors.org/cgi-bin/wiki.pl?Mince

tldr.nettime