From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Re: Unhelpful text in C-h v search-default-mode Date: Fri, 29 Dec 2023 10:01:35 +0000 Message-ID: References: <86frzlv6fy.fsf@mail.linkov.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="15641"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Juri Linkov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Dec 29 11:03:11 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 1rJ9hu-0003ur-Ej for ged-emacs-devel@m.gmane-mx.org; Fri, 29 Dec 2023 11:03:10 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rJ9ge-00025d-Tk; Fri, 29 Dec 2023 05:01:53 -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 1rJ9gX-00024p-9n for emacs-devel@gnu.org; Fri, 29 Dec 2023 05:01:46 -0500 Original-Received: from mail.muc.de ([193.149.48.3]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rJ9gT-0005jh-Dt for emacs-devel@gnu.org; Fri, 29 Dec 2023 05:01:44 -0500 Original-Received: (qmail 32543 invoked by uid 3782); 29 Dec 2023 11:01:36 +0100 Original-Received: from acm.muc.de (pd953a7e3.dip0.t-ipconnect.de [217.83.167.227]) (using STARTTLS) by colin.muc.de (tmda-ofmipd) with ESMTP; Fri, 29 Dec 2023 11:01:35 +0100 Original-Received: (qmail 7297 invoked by uid 1000); 29 Dec 2023 10:01:35 -0000 Content-Disposition: inline In-Reply-To: <86frzlv6fy.fsf@mail.linkov.net> X-Submission-Agent: TMDA/1.3.x (Ph3nix) X-Primary-Address: acm@muc.de Received-SPF: pass client-ip=193.149.48.3; envelope-from=acm@muc.de; helo=mail.muc.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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:314320 Archived-At: Hello, Juri. On Fri, Dec 29, 2023 at 09:12:49 +0200, Juri Linkov wrote: > > In a recent master branch Emacs, (not with -Q), from an info buffer, I > > did C-h v search-default-mode. The text printed in *Help* included this: > > Its value is > > # > > Original value was nil > > Local in buffer *info*<3>; global value is nil > > .. This is quite frankly entirely unhelpful; it gives no way to find out > > what the lambda is, in particular, no way to get to its source code. It > > isn't even possible to disassemble the function. > Another example: > 0. emacs -Q > 1. M-x list-timers > * 0.1s t show-paren-function > * 0.5s t # > I wonder how users are supposed to know what function it is? > Searching by the delay number 0.5 reveals this lambda comes from > (setq jit-lock-context-timer > (run-with-idle-timer jit-lock-context-time t > (lambda () > (unless jit-lock--antiblink-grace-timer > (jit-lock-context-fontify))))) The new feature I've been working on for a couple of months should fix this problem, too. I'm making steady progress, currently being stuck on cl-generic.el, due to its appalling lack of documentation. Incidentally, why do we need the long string of hex digits in the subr names F616e....6461_anonymous_lambda_109? These are simply the ASCII codes for "anonymous_lambda", and would appear to be utterly superfluous. They serve only to make it more difficult to use the function name, or to talk about it, and they make the list-timers output much wider than it need be. -- Alan Mackenzie (Nuremberg, Germany).