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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The CL link is not documentation, it is an essay, entire novel :-). But int= erestingly, that do not touch on that case either . I have glanced through = though, maybe I am missing it. -------- Originalmeddelande -------- Fr=E5n: Drew Adams <drew.adams@oracle.com> Datum: 2020-12-31 17:48 (GMT+01:00) Till: tomas@tuxteam.de, emacs-devel@gnu.org =C4mne: RE: Docs for &optional and &rest arguments together > > I don't read it says both c and d are required > > when &rest is also used. > > You just have to squint the other way .-) > They are not "required". They are provided -- in the call. It's just > that c is served first, d next, and all the rest (if any) goes to e: If someone finds the Elisp doc about lambda lists, I recommend consulting the Common Lisp doc (CLTL2) about it. Common Lisp lambda lists allow more stuff (&keys, &aux etc.), but for the things that Elisp has (&optional, &rest) the behavior is the same. The language in CLTL2 is quite precise. It too merits being read carefully, but I think it spells things out quite clearly. This is the section about lambda lists, which covers &optional and &rest: https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node64.html#SECTION009220000= 00000000000 With that, plus the Elisp doc, plus this thread, I think things will become more clear. HTH. --_000_AM0PR06MB6577B7DEE2DE5A00D2E3166E96D60AM0PR06MB6577eurp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Exchange Server"> <!-- converted from text --><style><!-- .EmailQuote { margin-left: 1pt; pad= ding-left: 4pt; border-left: #800000 2px solid; } --></style> </head> <body> <div dir=3D"auto">The CL link is not documentation, it is an essay, entire = novel :-). But interestingly, that do not touch on that case either . I hav= e glanced through though, maybe I am missing it. <div><br> </div> <div><br> </div> <div>-------- Originalmeddelande --------</div> <div>Fr=E5n: Drew Adams <drew.adams@oracle.com> </div> <div>Datum: 2020-12-31 17:48 (GMT+01:00) </div> <div>Till: tomas@tuxteam.de, emacs-devel@gnu.org </div> <div>=C4mne: RE: Docs for &optional and &rest arguments together </= div> <div><br> </div> </div> <font size=3D"2"><span style=3D"font-size:11pt;"> <div class=3D"PlainText">> > I don't read it says both c and d are re= quired<br> > > when &rest is also used.<br> > <br> > You just have to squint the other way .-)<br> > They are not "required". They are provided -- in the call. I= t's just<br> > that c is served first, d next, and all the rest (if any) goes to e:<b= r> <br> If someone finds the Elisp doc about lambda lists,<br> I recommend consulting the Common Lisp doc (CLTL2)<br> about it. Common Lisp lambda lists allow more stuff<br> (&keys, &aux etc.), but for the things that Elisp<br> has (&optional, &rest) the behavior is the same.<br> <br> The language in CLTL2 is quite precise. It too<br> merits being read carefully, but I think it spells<br> things out quite clearly.<br> <br> This is the section about lambda lists, which covers<br> &optional and &rest:<br> <br> <a href=3D"https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node64.html#SECTI= ON00922000000000000000">https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node= 64.html#SECTION00922000000000000000</a><br> <br> With that, plus the Elisp doc, plus this thread,<br> I think things will become more clear. HTH.<br> <br> </div> </span></font> </body> </html> --_000_AM0PR06MB6577B7DEE2DE5A00D2E3166E96D60AM0PR06MB6577eurp_--