On Tue, Nov 23, 2021 at 1:00 AM Henry Bent <henry.r.bent@gmail.com> wrote:

What language were the PL/I compilers written in?

Wikipedia claims that IBM is still developing a PL/I compiler, which I suppose I have no reason to disbelieve, but I'm very curious as to who is using it and for what purpose.

I have a vague recollection that PL/X was a PL/I variant used for internal development on VM/CMS.  Does that ring any bells for anyone?

Adam