From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.devel Subject: Re: Simplification of `affixation-function` Date: Tue, 27 Apr 2021 19:48:12 +0300 Organization: LINKOV.NET Message-ID: <8735vbr7w3.fsf@mail.linkov.net> References: <87y2d777r2.fsf@mail.linkov.net> <35e2e508-cd0a-b921-af96-9c12da92faf3@yandex.ru> <126afe1f-8ac5-69fc-f6af-a586bc354d03@daniel-mendler.de> <1e9bb418-9f1a-68ee-14de-e68f30f88b0a@daniel-mendler.de> <50cfaa6f-67c0-117f-41b5-10fefabee0d2@yandex.ru> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5131"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) Cc: Daniel Mendler , Stefan Monnier , emacs-devel@gnu.org To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Apr 27 18:50:59 2021 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 1lbQvL-0001EK-86 for ged-emacs-devel@m.gmane-mx.org; Tue, 27 Apr 2021 18:50:59 +0200 Original-Received: from localhost ([::1]:54334 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lbQvK-0000Xi-8V for ged-emacs-devel@m.gmane-mx.org; Tue, 27 Apr 2021 12:50:58 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60374) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lbQts-0007MQ-CH for emacs-devel@gnu.org; Tue, 27 Apr 2021 12:49:34 -0400 Original-Received: from relay4-d.mail.gandi.net ([217.70.183.196]:47863) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lbQtp-00070k-5y for emacs-devel@gnu.org; Tue, 27 Apr 2021 12:49:27 -0400 X-Originating-IP: 91.129.102.166 Original-Received: from mail.gandi.net (m91-129-102-166.cust.tele2.ee [91.129.102.166]) (Authenticated sender: juri@linkov.net) by relay4-d.mail.gandi.net (Postfix) with ESMTPSA id 7E494E0007; Tue, 27 Apr 2021 16:49:21 +0000 (UTC) In-Reply-To: <50cfaa6f-67c0-117f-41b5-10fefabee0d2@yandex.ru> (Dmitry Gutov's message of "Mon, 26 Apr 2021 01:31:53 +0300") Received-SPF: pass client-ip=217.70.183.196; envelope-from=juri@linkov.net; helo=relay4-d.mail.gandi.net X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.devel:268539 Archived-At: > You can also note that the third (suffix) element is always an empty string > in both of these use cases. So affixation-function was really added to be > able to add a prefix. affixation-function was an improvement over annotation-function, but nonetheless it has limitations too. What would be a better thing is like Daniel proposed a new meta `group-function`, I'd imagine a similar meta `format-function` that could receive a candidate and return a string to insert to the completions buffer. Then the caller e.g. help--symbol-completion-table could define whether to append "u", "a" and "c" in parens by using on a candidate something like (format "%s (%s)" cand (cond ((fboundp (intern cand)) "f")) ...), or prepend a dimmed letter as a prefix, or to use an icon. The same `format-function` could be used to remove the group prefix when `group-function` is in use, instead of providing an additional argument `transform` for `group-function`.