I was just happy when VR2 came out and found someone had undone all
those macros that were in the original code.
I hacked Berkeley Job Control as well as command line editing into it
(KSH hadn’t seen the light of day outside the labs at that point).
I subsequently had a nice talk with Korn at a USENIX.    I also sat down
with a couple of the guys trying to implement their own shell
independent of the ATT code and explained to them how Berkeley job
control works.   It’s for that reason my name shows up in a lot of the
early Linux docs.

Amusingly, I’d forgotten all about this stuff until one day I was
sitting at a MIPS workstation (MIPS branded, not the DEC spim).   
Without thinking about it, I typed “fg” at the shell prompt.

“Job control not Enabled,” it said.   Hey!  That sounds like one of my
messages.   “set -J” I type.   “Job control enabled.”
Hey!  This is a “Ron shell” as it was known at BRL.   Turns out it went
out on the Mach distros so I’ve found it on all kinds of things like the
NeXT etc…


------ Original Message ------
From "Sven Mascheck" <mascheck@in-ulm.de>
To tuhs@tuhs.org
Date 12/30/2022 3:20:28 PM
Subject [TUHS] Re: A few comments on porting the Bourne shell

>Chet Ramey on 30.12.2022 20:51:
>>Arnold Robbins built on that work and ported the v8-v10 shells to modern
>>Linux versions. (I am sorry, I do not have a link right now.)
>
>And btw, 8th ed (http://man.cat-v.org/unix_8th/1/sh) even added a simple history mechanism with the "=(1)" command (https://www.in-ulm.de/~mascheck/bourne/v8/=.html).
>
>Sven
>