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charset=us-ascii Content-Transfer-Encoding: quoted-printable > I have glanced through though, maybe I am missing it. =20 Don't just glance. Give it the attention that it and your understanding bot= h deserve. If that CL doc didn't help you then I really suggest you sit dow= n, take it slowly, and reread carefully. =20 Both the Elisp doc and the CL doc about this are clear and complete, I thin= k. I suggest with respect that you're maybe just not paying enough attentio= n. =20 Don't be in a hurry. The info is there; just give it a chance - and another= read. =20 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.=20 =20 > > I don't read it says both c and d are required > > when &rest is also used. >=20 > 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: HYPERLINK "https://urldefense.com/v3/__https:/www.cs.cmu.edu/Groups/AI/html= /cltl/clm/node64.html*SECTION00922000000000000000__;Iw!!GqivPVa7Brio!PxyUBv= Vt3a4Eze6ZtyLlEC6A236XgfttZKnn-7gkT1H6p1FBymyit-C_eQf2-wZH$"https://www.cs.= cmu.edu/Groups/AI/html/cltl/clm/node64.html#SECTION00922000000000000000 With that, plus the Elisp doc, plus this thread, I think things will become more clear. HTH. --__160943877316658046abhmp0002.oracle.com Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV=3D"Content-Type" CONTENT= =3D"text/html; charset=3Dus-ascii"><meta name=3DGenerator content=3D"Micros= oft Word 15 (filtered medium)"><style><!-- /* Font Definitions */ @font-face =09{font-family:"Cambria Math"; =09panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face =09{font-family:Calibri; =09panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face =09{font-family:"Trebuchet MS"; =09panose-1:2 11 6 3 2 2 2 2 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal =09{margin:0in; =09margin-bottom:.0001pt; =09font-size:12.0pt; =09font-family:"Times New Roman",serif;} a:link, span.MsoHyperlink =09{mso-style-priority:99; =09color:blue; =09text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed =09{mso-style-priority:99; =09color:purple; =09text-decoration:underline;} p.msonormal0, li.msonormal0, div.msonormal0 =09{mso-style-name:msonormal; =09mso-margin-top-alt:auto; =09margin-right:0in; =09mso-margin-bottom-alt:auto; =09margin-left:0in; =09font-size:12.0pt; =09font-family:"Times New Roman",serif;} p.emailquote, li.emailquote, div.emailquote =09{mso-style-name:emailquote; =09mso-margin-top-alt:auto; =09margin-right:0in; =09mso-margin-bottom-alt:auto; =09margin-left:1.0pt; =09border:none; =09padding:0in; =09font-size:12.0pt; =09font-family:"Times New Roman",serif;} span.EmailStyle19 =09{mso-style-type:personal-reply; =09font-family:"Trebuchet MS",sans-serif; =09color:#1F4E79;} .MsoChpDefault =09{mso-style-type:export-only; =09font-size:10.0pt;} @page WordSection1 =09{size:8.5in 11.0in; =09margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 =09{page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli= nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>> I have glan= ced through though, maybe I am missing it.<o:p></o:p></p><p class=3DMsoNorm= al><span style=3D'font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;co= lor:#1F4E79'><o:p> </o:p></span></p><p class=3DMsoNormal><span style= =3D'font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#1F4E79'>D= on't just <i>glance</i>. Give it the attention that it and your understandi= ng both deserve. If that CL doc didn't help you then I really suggest you s= it down, take it slowly, and reread carefully.<o:p></o:p></span></p><p clas= s=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Trebuchet MS",sa= ns-serif;color:#1F4E79'><o:p> </o:p></span></p><p class=3DMsoNormal><s= pan style=3D'font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#= 1F4E79'>Both the Elisp doc and the CL doc about this are clear and complete= , I think. I suggest with respect that you're maybe just not paying enough = attention.<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-si= ze:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#1F4E79'><o:p> <= /o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-f= amily:"Trebuchet MS",sans-serif;color:#1F4E79'>Don't be in a hurry. The inf= o is there; just give it a chance - and another read.<o:p></o:p></span></p>= <p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Trebuchet= MS",sans-serif;color:#1F4E79'><o:p> </o:p></span></p><div style=3D'bo= rder:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><p c= lass=3DMsoNormal>The CL link is not documentation, it is an essay, entire n= ovel :-). But interestingly, that do not touch on that case either . I have= glanced through though, maybe I am missing it. <o:p></o:p></p><div><p clas= s=3DMsoNormal><o:p> </o:p></p></div></div><div><p class=3DMsoNormal st= yle=3D'margin-bottom:12.0pt'><span style=3D'font-size:11.0pt'>> > I d= on't read it says both c and d are required<br>> > when &rest is = also used.<br>> <br>> You just have to squint the other way .-)<br>&g= t; They are not "required". They are provided -- in the call. It'= s just<br>> that c is served first, d next, and all the rest (if any) go= es to e:<br><br>If someone finds the Elisp doc about lambda lists,<br>I rec= ommend consulting the Common Lisp doc (CLTL2)<br>about it. Common Lis= p lambda lists allow more stuff<br>(&keys, &aux etc.), but for the = things that Elisp<br>has (&optional, &rest) the behavior is the sam= e.<br><br>The language in CLTL2 is quite precise. It too<br>merits be= ing 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 an= d &rest:<br><br><a href=3D"https://urldefense.com/v3/__https:/www.cs.cm= u.edu/Groups/AI/html/cltl/clm/node64.html*SECTION00922000000000000000__;Iw!= !GqivPVa7Brio!PxyUBvVt3a4Eze6ZtyLlEC6A236XgfttZKnn-7gkT1H6p1FBymyit-C_eQf2-= wZH$">https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node64.html#SECTION009= 22000000000000000</a><br><br>With that, plus the Elisp doc, plus this threa= d,<br>I think things will become more clear. HTH.<o:p></o:p></span></= p></div></div></div></body></html> --__160943877316658046abhmp0002.oracle.com--