Re: VM 8.2.0b: vm-pcrisis.el - fails to compile in emacs 26.3 - "&optional &rest"

[Diagon]

 ---- On Mon, 03 May 2021 19:12:03 -0700 Diagon <nongnu.org@niwas.net> wrote 
----
 > VM 8.2.0b and emacs 26.3.  Running make on the lisp files fails on 
 > vm-pcrisis:
 > 
 >    vm-pcrisis.el:1217:28:Error: Variable name missing after &optional
 >    make: *** [Makefile:114: vm-pcrisis.elc] Error 1

That error appears in emacs' bytecomp.el, in the function 
byte-compile-check-lambda-list.  There have been recent changes to that 
function, which appear some time before emacs 28. That error message is removed.

https://github.com/emacs-mirror/emacs/blob/master/lisp/emacs-lisp/bytecomp.el

So I'm not clear if I have any choice but to migrate to a newer version of 
emacs?  Or is there some other way around this?  Is it possible to just upgrade 
the emacs lisp files?
 
 > It appears it doesn't like "&optional &rest" in the function 
 > vmpc-none-true-yet.  Does anyone have a suggestion of how to fix?
 > 
 > This is Ubuntu 20.04.  Oddly I was using emacs 26.3 on Ubuntu 16.04 and 
 > didn't have any trouble there.
 > 
 > /D
 > 
 > PS.  Lines 229 and 236 have been inserted by mistake, creating a warning.