From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: FW: [External] : Re: Lisp anime video Date: Fri, 24 Sep 2021 19:03:27 +0200 Message-ID: <875yuphpnk.fsf@zoho.eu> References: <874kb8akgd.fsf@zoho.eu> <20210829074031.GB18750@tuxteam.de> <871r6c8ybx.fsf@zoho.eu> <87v93oy0ny.fsf@posteo.net> <86lf4ck43a.fsf@protonmail.com> <87lf4czc8e.fsf@zoho.eu> <87ilyqilce.fsf@zoho.eu> <20210924065314.GA32428@tuxteam.de> <87sfxuh1mu.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25548"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:i4des4iJnLYwMwLtRZ1wru6kxtQ= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 24 19:22:31 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mTou7-0006QA-OK for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 24 Sep 2021 19:22:31 +0200 Original-Received: from localhost ([::1]:55590 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mTou5-0007hC-NR for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 24 Sep 2021 13:22:30 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49274) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mTobt-00015S-AL for help-gnu-emacs@gnu.org; Fri, 24 Sep 2021 13:03:41 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:40930) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mTobr-0001o7-OM for help-gnu-emacs@gnu.org; Fri, 24 Sep 2021 13:03:41 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mTobp-0002Ac-V5 for help-gnu-emacs@gnu.org; Fri, 24 Sep 2021 19:03:37 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.248, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:133219 Archived-At: Drew Adams wrote: >>> Yeah, I know "cdddddddddddddddddr" isn't "official API". >> >> `cddddr' is the longest I think ... > > (defun cdddddddddddddddddr (list) > "Return the 17th cdr of LIST." > (nthcdr 17 list)) > > or > > (defun cdddddddddddddddddr (list) > "Return the 17th cdr of LIST." > (declare (compiler-macro internal--compiler-macro-cXXr)) > (cddddr (cddddr (cddddr (cddddr (cdr list)))))) > > (setq foo '(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19)) > (cdddddddddddddddddr foo) It seems "cdddddddddddddddddr" is theoretically as well as practically possible however it also seems to hold that it isn't in the official API - perhaps report a bug with your code so they will add it to the next Emacs ... -- underground experts united https://dataswamp.org/~incal