The thing is that emacs predates Apple developing cmd-z/x/c/v and Microsoft copying Apple in Windows. Before that, the most commonly copied keystrokes in programmer's editors were the freaking Wordstar ones e.g. in all the Borland products.

Also OP apparently has no knowledge of the far better IDEs we had 30-40 years ago including but not limited to:

- Apple MPW, 1986. GUI editor where every window is (potentially) a Unix-like shell, running commands if you hit Enter (or cmd-Return) instead of Return. Also the shell scripting has commands for manipulating windows, running editing actions inside them etc. Kind of like elisp but with shell syntax. There's an integrated source code management system called Projector. If you type a command name, with or without arguments and switches, and then hit option-Return then it pops up a "Commando" window with a GUI with checkboxes and menus etc for all options for that command, with anything you'd already typed already filled out. It was easy to set up Commando for your own programs too.

- Apple Dylan, 1992-1995. Incredible Lisp/Smalltalk-like IDE for Apple's Dylan language

- THINK Pascal and C, 1986. The Pascal version was orginaly an interpreter, I think written for Apple, but then became a lightning-fast compiler, similar to Borland on CP/M and MS-DOS but better (and GUI). The C IDE later became a Symantec product.

- Metrowerks Codewarrior, 1993. Ex THINK/Symantec people starting a Mac IDE from scratch, incorporating first Metrowerks' M68000 compilers for the Amiga, then a new PowerPC back end. Great IDE, great compilers -- the first anywhere to compile Stepanov's STL with zero overhead -- and with a groundbreaking application framework called PowerPlant that heavily leaned on new C++ features. It was THE PowerPC development environment, especially after Symantec's buggy PoS version 6.

- Macintosh Allegro Common Lisp (later dropped the "Allegro"), 1987. A great Mac IDE. A great Lisp compiler and environment. Combined in one place. It was expensive but allowed amazing productivity in custom native Mac application development, far ahead of the Pascal / C / C++ environments. Absolutely perfect for consultants.

Really, it is absolutely incredible how slick and sophisticated a lot of these were, developed on 8 MHz to 33 or 40 MHz M68000s with from 2-4 MB RAM up to maybe 16-32 MB. (A lot of the Mac II line (and SE/30) theoretically supported 128 MB RAM, but no one could afford that much even once big enough SIMs were were available.)

All your example are in the Apple ecosystem. Depending on where the author is from, it may not be that surprising that they wouldn't know about them. In my corner of the wolrd, Apple was basically non-existent until the iPod and iPhone.

> Before that, the most commonly copied keystrokes in programmer's editors were the freaking Wordstar ones e.g. in all the Borland products.

Borland switched to https://en.wikipedia.org/wiki/IBM_Common_User_Access shortcuts in the last few versions of their TUI - Ctrl+Ins, Shift+Ins, Shift+Del for clipboard, for example. Since Windows also supported them (and still does!) this actually made for a nice common system between Turbo Vision TUI apps and actual GUI in Windows.

From my own experience, Think Pascal was fantastic for the time. MPW was serious and high-powered stuff for pro development on a late 80s/early 90s microcomputer; used it professionally for 2 or 3 years and loved it. Never tried the other ones you mentioned.

As you say, it's incredible how slick and sophisticated those systems were, given the hardware of the day. I mean sure current IDEs may be preferable but we're also using 4 Ghz systems these days instead of 40 Mhz or whatever.