EMACS started as Eugene Ciccareli’ init file for the TECO editor (which was also a programming language) around 1976. Hence the name (Eugene‘s Macros). It was later rewritten in Lisp for Multics, the MIT Lisp Machine (I worked on one for the Xerox lisp machine as well), and later Unix (in those cases using lisp only as an extension language)
Interesting, do you have a source for this? I’ve always read that it stood for Editor MACros, are you saying this is a backronym?
Since Wikipedia didn’t even exist until emacs was more than 25 years old and little was written down in a way acceptable to Wikipedia, consider pages on topics of that vintage to be vague
Do you have corroborating sources? I (and others) would be keenly interested in them!
"The new version of TECO quickly became popular at the AI Lab and soon accumulated a large collection of custom macros whose names often ended in MAC or MACS, which stood for macro. Two years later, Guy Steele took on the project of unifying the diverse macros into a single set.[21] Steele and Stallman's finished implementation included facilities for extending and documenting the new macro set.[3] The resulting system was called EMACS, which stood for Editing MACroS or, alternatively, Emacs with MACroS."
For a start it's either spelled "Emacs" or "EMACS", and definitely not "eMacs".
Then it's closer to an OS than an editor.
Everyone knows that, but iOS autocorrects Emacs -> eMacs because Apple used to sell a product called "eMac".