> > No, I'm saying even if I see ESC- in the echo area, C-g still results in C-M-g is undefined.
> >
> > Version = GNU Emacs 24.5.1
>
> Right, that was a bug in that version of Emacs. It is fixed in Emacs 25.1.
> ------------------
> Excellent, thanks. I'll look at the daily snapshot ppa for Ubuntu instead of the default version.
> ----------------
> actually, it's the same in GNU Emacs 26.0.50.

Not here.  I do see the behavior you describe in Emacs 24.5, but not
in Emacs 25.1, 25.2, and 26.0.50.

--------------------

Ignore that this is a phone - it's a remote ssh shell to a Ubuntu server 16.04 machine running the latest 26.0.50 from ppa:ubuntu-elisp/ppa.