From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings via "Emacs development discussions." Newsgroups: gmane.emacs.devel Subject: Re: Recentish C-s M-y change Date: Mon, 04 Jan 2021 09:23:34 +0000 Message-ID: References: <87r1na4tyu.fsf@gnus.org> <87tus6tj7s.fsf@mail.linkov.net> <87a6txigm1.fsf@gnus.org> <874kk5lzew.fsf@mail.linkov.net> Reply-To: Gregory Heytings Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2808"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Alpine 2.22 (NEB 394 2020-01-19) Cc: ams@gnu.org, emacs-devel@gnu.org To: Richard Stallman Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Jan 04 10:24:22 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 1kwM6A-0000d6-Ig for ged-emacs-devel@m.gmane-mx.org; Mon, 04 Jan 2021 10:24:22 +0100 Original-Received: from localhost ([::1]:47176 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kwM69-0005dM-Jt for ged-emacs-devel@m.gmane-mx.org; Mon, 04 Jan 2021 04:24:21 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38512) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwM5b-00059E-Jf for emacs-devel@gnu.org; Mon, 04 Jan 2021 04:23:47 -0500 Original-Received: from mx.sdf.org ([205.166.94.24]:50795) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwM5Z-0004u4-Ma; Mon, 04 Jan 2021 04:23:47 -0500 Original-Received: from sdf.org (IDENT:ghe@faeroes.freeshell.org [205.166.94.9]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 1049NaNc023210 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Mon, 4 Jan 2021 09:23:36 GMT Original-Received: (from ghe@localhost) by sdf.org (8.15.2/8.12.8/Submit) id 1049OJcc011645; Mon, 4 Jan 2021 09:24:19 GMT In-Reply-To: Received-SPF: pass client-ip=205.166.94.24; envelope-from=ghe@sdf.org; helo=mx.sdf.org X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, GAPPY_SUBJECT=0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no 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:262405 Archived-At: > > After some reflection, here's what I think the point is. > > isearch-mode-map is not like a prefix key's map. A control character > which is undefined in isearch-mode-map is not a vacant space, not a > place you can put some nice new feature and nobody will mind. > > The undefined control character is a useful convenience feature, which > people use. > Thank you, now I understand what you mean. I don't use that feature myself, but it's there and I can understand that people (and in particular you) find it convenient. > > Except that with many control characters defined, it is hard to remember > which ones are defined -- hard to be confident that a given control > character is one that will exit the search for you. > Yes, but the only newly defined control character which makes Emacs in 2020 different from Emacs in 1985 is C-m / RET, bound to isearch-exit around 1990. Previously C-m / RET terminated isearch and inserted a newline; now C-m / RET only terminates isearch. You defined C-g, C-q, C-r, C-s, C-w and C-y in 1985 (or perhaps earlier). C-h has also been bound in the meantime, but you can still exit isearch with C-h as you would have done it in 1985, for instance with C-h C-g, or C-h f. IIUC the only difference is that C-h k now describes the key in isearch-mode-map instead of the key in global-map. Likewise, C-x has been bound in the meantime, to allow C-x 8 RET, but you can still exit isearch with C-x as you would have done in 1985, for instance with C-x C-f or C-x b. Likewise, C-u has been bound in the meantime, to allow arguments to subcommands, but again you can still exit isearch with C-u as you would have done in 1985, for instance with C-u C-b or C-u C-n.