bug#37811: "standard GNU Emacs Lisp"

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Cc: schwab@linux-m68k.org,  37811@debbugs.gnu.org,  nicholasdrozd@gmail.com
> Date: Fri, 08 Nov 2019 00:48:59 +0100
> 
> > Or maybe we should simply say this:
> >
> >   Common Lisp note: Common Lisp has functions ‘union’ (which avoids
> >   duplicate elements) and ‘intersection’ for set operations.  In Emacs
> >   Lisp, variants of these facilities are provided by the ‘cl-lib’
> >   library.  *Note (cl)Lists as Sets::.
> 
> Yes, this is much better than the other proposed alternatives.  Please
> push such a change.  (The file to edit is emacs/doc/lispref/lists.texi
> row 1215.)

Done.