From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Undo defalias Date: Fri, 03 Mar 2023 11:33:08 -0500 Message-ID: References: <878rgioa5f.fsf@telefonica.net> <87v8jhddul.fsf@telefonica.net> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25599"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:C80ysI5E0Zt4HPyC4OBBiUZNWZ4= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Mar 03 17:34:03 2023 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 1pY8M6-0006Wt-N2 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 03 Mar 2023 17:34:02 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pY8Li-00008a-DA; Fri, 03 Mar 2023 11:33:40 -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 1pY8LU-000062-ST for help-gnu-emacs@gnu.org; Fri, 03 Mar 2023 11:33:27 -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 1pY8LL-0005bI-Id for help-gnu-emacs@gnu.org; Fri, 03 Mar 2023 11:33:16 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1pY8LJ-0005P6-NA for help-gnu-emacs@gnu.org; Fri, 03 Mar 2023 17:33:13 +0100 X-Injected-Via-Gmane: http://gmane.org/ 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=0.249, 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: 2.1.29 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:142917 Archived-At: > The problem was caused by aggressive-indent-mode.el. It uses > > (cl-letf (((symbol-function 'message) #'ignore)) > ... So either: - you're still within the `cl-letf`. In that case `abort-recursive-edit` or some such should fix the problem. - you're not within the `cl-letf` any more, in which case the question becomes: how come `cl-letf` didn't restore the previous value? `cl-letf` uses `unwind-protect` so it should restore the previous binding reliably even in case of errors. [ There's admittedly the possibility/risk that you hit `C-g` (or some similar error occurred) right at the specific moment when `cl-letf` was executing the second part of the `unwind-protect` (i.e. the one that reset `message` to its previous definition). That's a known hole in our system. ] Stefan