here is a link to a ksh version that seems to predate ksh88, msg.c
says "Version 06/03/86a":
https://github.com/weiss/original-bsd/tree/master/local/toolchest/ksh
I found the link at the bottom of this interesting page:
https://www.in-ulm.de/~mascheck/various/shells/ksh_versions.html
and this link contains a surprising amount of information on many
shell versions released over the years -
https://www.in-ulm.de/~mascheck/various/shells
On 12/22/20, Scot Jenkins via TUHS <tuhs(a)minnie.tuhs.org> wrote:
Warren Toomey <wkt(a)tuhs.org> wrote:
Hi all, I received an e-mail looking for the
ksh-88 source code. A quick
search for it on-line doesn't reveal it. Does anybody have a copy?
https://archive.org/details/ATTUNIXSystemVRelease4Version2
has source for several releases.
click "show all" on the right under "download options",
the file sysvr4.tar.bz2 has source for ksh88:
from cmd/ksh/sh/msg.c:
msg.c: MSG e_version = "\n@(#)Version M-11/16/88d\0\n";
I think this was for x86 PCs. I haven't tried to build it.
The date on the files is Jan 25 1993.
scot