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 "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#56110: 27+; switching from line-mode to char-mode Date: Wed, 22 Jun 2022 20:02:55 -0400 Message-ID: References: <875ykvs9gq.fsf@electra.home.arpa> <87wndaw84w.fsf@web.de> <87sfnyw6m7.fsf@web.de> <877d58obnn.fsf@web.de> 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="7801"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: "C. Michailidis" , 56110@debbugs.gnu.org To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jun 23 02:05:28 2022 Return-path: Envelope-to: geb-bug-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 1o4ALf-0001s5-Ub for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 23 Jun 2022 02:05:28 +0200 Original-Received: from localhost ([::1]:42248 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4ALe-0004YG-FS for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 22 Jun 2022 20:05:26 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52032) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4AKI-0004Y3-Pq for bug-gnu-emacs@gnu.org; Wed, 22 Jun 2022 20:04:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:42985) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1o4AKI-0007Tx-Fk for bug-gnu-emacs@gnu.org; Wed, 22 Jun 2022 20:04:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1o4AKI-00073c-C1 for bug-gnu-emacs@gnu.org; Wed, 22 Jun 2022 20:04:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 23 Jun 2022 00:04:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 56110 X-GNU-PR-Package: emacs Original-Received: via spool by 56110-submit@debbugs.gnu.org id=B56110.165594258727063 (code B ref 56110); Thu, 23 Jun 2022 00:04:02 +0000 Original-Received: (at 56110) by debbugs.gnu.org; 23 Jun 2022 00:03:07 +0000 Original-Received: from localhost ([127.0.0.1]:36882 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o4AJP-00072R-71 for submit@debbugs.gnu.org; Wed, 22 Jun 2022 20:03:07 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:18230) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o4AJM-00071x-Ui for 56110@debbugs.gnu.org; Wed, 22 Jun 2022 20:03:05 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 620CD80323; Wed, 22 Jun 2022 20:02:59 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 35E6E804AA; Wed, 22 Jun 2022 20:02:58 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1655942578; bh=cOQJpEBs1HRDJkE/LTRAKOwHCn8efboIetzAJZLDINE=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=H9NLqzvYYbLmdDqdimvF1xm8BriJj7hTB8JMo9AsQNaMEGYV7/CzFGYw0xYV0843a waRHV5xusRKJcZXzLvscnfz2h1KGpHVLWdxv9J1AbJLYE89N+BsxsFJoJdUbzA1EBa btM1D2dieKeSV7ShgNsBADInVct7slUZ9uZDHiquUe7eFrEOv3XNnWscPon6MxWiCN xsZkxPW1EzclX5kaMSjtPx6sofxPk3y5mP1TOS5B65trvV+TFxPKTYZQmhK7vvOpX+ DFByH7mVTSiqXF2aorzo3JiIKMNdFY9CppHSdQz49G2Z6JzUBvuOYeZ+0P2CNpxZqi Jf72XNLlsmD2w== Original-Received: from alfajor (196.214.25.93.rev.sfr.net [93.25.214.196]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 7A182120278; Wed, 22 Jun 2022 20:02:57 -0400 (EDT) In-Reply-To: <877d58obnn.fsf@web.de> (Michael Heerdegen's message of "Wed, 22 Jun 2022 19:23:08 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:235059 Archived-At: >> This maybe? > > That works - but I fail to understand why a simple `let' doesn't suffice > (which works as well): Depends if you want to have to think about what other code does or not. If you don't, then `let` is not the same: e.g. if some other code uses `add/remove-function` on that variable within your `let`, their changes will be lost when your `let` ends. Stefan