bug#37811: "standard GNU Emacs Lisp"

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Sat, 19 Oct 2019 15:50:04 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: 37811@debbugs.gnu.org, nicholasdrozd@gmail.com
>> 
>> > >      Common Lisp note: Common Lisp has functions ‘union’ (which avoids
>> > >      duplicate elements) and ‘intersection’ for set operations.
>> > >      Although standard GNU Emacs Lisp does not have them, the ‘cl-lib’
>> > >      library provides versions.  *Note (cl)Lists as Sets::.
>> > >
>> > > So "standard" is used here in contrast to CL.  I don't think any of
>> > > the proposed replacements pick up that nuance, do they?
>> > 
>> > cl-lib is part of Emacs, but not loaded by default.  I think that's what
>> > standard is supposed to mean here.
>> 
>> I see your point, but that wasn't my interpretation when I've read
>> that text.
>> 
>> Anyway, I think just dropping that word will fix the possible
>> confusion.
>
> 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.)

Best regards,
Stefan Kangas