From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen via "Emacs development discussions." Newsgroups: gmane.emacs.devel Subject: Re: Instead of pcase Date: Fri, 01 Dec 2023 17:04:09 +0100 Message-ID: <87jzpx52py.fsf@web.de> References: <87fs169mjj.fsf@posteo.net> <093f11a1-57c2-5e56-d39b-26fef1c67cbb@gutov.dev> <25942.25061.217864.329049@retriever.mtv.corp.google.com> <87zfzdcz6z.fsf@posteo.net> <763f067b-4ca9-1eba-9f3c-424c38589e9c@gutov.dev> <83fs0navpj.fsf@gnu.org> <838r6ebfhw.fsf@gnu.org> Reply-To: Michael Heerdegen Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19684"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: emacs-devel@gnu.org Cancel-Lock: sha1:BFSXjXZsKV+f73r90fkzzYFBU90= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Dec 01 17:04:39 2023 Return-path: Envelope-to: ged-emacs-devel@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 1r960M-0004rj-Kb for ged-emacs-devel@m.gmane-mx.org; Fri, 01 Dec 2023 17:04:38 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r95zl-0005IA-OT; Fri, 01 Dec 2023 11:04:01 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r95zk-0005Ht-LG for emacs-devel@gnu.org; Fri, 01 Dec 2023 11:04:00 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r95zi-00021L-Kv for emacs-devel@gnu.org; Fri, 01 Dec 2023 11:04:00 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1r95zf-0003e9-Dr for emacs-devel@gnu.org; Fri, 01 Dec 2023 17:03:55 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:313443 Archived-At: Eli Zaretskii writes: > Incidentally, the actual code from which this were taken is > > (`(,hookfun . (,start ,end ,collection . ,plist)) > > Which has _two_ periods, not one, which are AFAIU redundant, as far as > the Lisp reader is concerned. #+begin_src emacs-lisp (let ((hookfun #'my-hookfun) (start 1) (end 99) (collection (list "foo" "bar")) (plist `((prop . val)))) (pcase `(,hookfun . (,start ,end ,collection . ,plist)) (`(,hookfun . (,start ,end ,collection . ,plist)) (list hookfun start end collection plist)))) ;; ==> (my-hookfun 1 99 ("foo" "bar") ((prop . val))) #+end_src The `pcase' pattern is _literally_ identical to a `backquote' call used to create the same value. Whatever problem you have with `pcase' also exists for backquote. Michael.