From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: Suggested experimental test Date: Mon, 22 Mar 2021 17:48:44 +0000 Message-ID: <271290d7aaa8812bd181@heytings.org> References: <831ba60af0cbfdd95686@heytings.org> <87mtuxj8ue.fsf@gnus.org> <9088e12cb3169cdcdbc4@heytings.org> <9088e12cb3a70cbf66aa@heytings.org> <8335wnc16k.fsf@gnu.org> <271290d7aa689ad374a6@heytings.org> <83tup39jhh.fsf@gnu.org> 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="28093"; mail-complaints-to="usenet@ciao.gmane.io" Cc: ams@gnu.org, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Mar 22 18:51:44 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 1lOOiO-0007DA-9b for ged-emacs-devel@m.gmane-mx.org; Mon, 22 Mar 2021 18:51:44 +0100 Original-Received: from localhost ([::1]:42846 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lOOiL-0004OB-P5 for ged-emacs-devel@m.gmane-mx.org; Mon, 22 Mar 2021 13:51:41 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50190) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lOOfa-00023K-DC for emacs-devel@gnu.org; Mon, 22 Mar 2021 13:48:50 -0400 Original-Received: from heytings.org ([95.142.160.155]:40822) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lOOfY-0007xR-4V; Mon, 22 Mar 2021 13:48:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1616435325; bh=nU8aBVKgRQO4t+4lHBcFTUjv3OLHPlrzewkfWtAAC94=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=bT9ATYpCjpQ61Hfl8wCm88pGkXwYobD6LDGUf/cMypL5ph8gaqMbFeUxaVQfsflr1 uwpLajmqMvnzR6PiufFztd7hsJK9h0x/vuVpryIxv0NtWeNj1D2exuHFuIDXIr2BKw IVUZg9erigxCgV6p0gPMEXbv/lEYVzHtTkpj8hFWGEg2DRiiQSFFmiS3xVaunkdkuR 7/3e/BqFblqG9ZmguRQJQfr/PEMmaYSS8igXqWA3YEwHXW5qCdrwaLQb2K6e+Aw7U8 RRJdizzT2QbZNVgZ2cNDurjX4dA8ZmwRUds4TTXWLzv29TGoHVHWB+oHpsmF/TUEkY Nip6krGWgzqPg== In-Reply-To: <83tup39jhh.fsf@gnu.org> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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:266768 Archived-At: >>>> Even among the C-LETTER and M-LETTER keys, there are quite a few >>>> whose meaning have changed during the last 40 years. I know at least >>>> of: C-h, C-l, M-g, M-j, M-n, M-o, M-p, M-r and M-s. That's 9 keys >>>> out of 52. >>> >>> Please describe those changes one by one. At least for some of these >>> keys I'm unaware of any changes in their bindings, so I'm curious what >>> exactly is considered a "change" in this context. >> >> C-c: was initially exit-recursive-edit, and was changed to a prefix key >> for modes in Emacs 16; exit-recursive-edit was then moved to C-M-c >> >> C-h: was initially (and in other Emacsen) the same as C-b, and was >> (very early in the development of GNU Emacs) changed into the help >> character >> >> C-l: was 'recenter' up to and including Emacs 22, then became >> 'recenter-top-bottom', which changes its semantics when is repeated >> >> C-z: was initially (and in other Emacsen) a prefix character, was at >> some point bound exit-recursive-edit, then became (in GNU Emacs 1.11) >> bound to suspend-emacs >> >> M-g: was initially bound to fill-region, was used for facemenu in Emacs >> 19-21, and is used for goto-like commands since Emacs 22 >> >> M-j: was initially unused, became indent-new-comment-line in Emacs 1.7 >> >> M-n and M-p: were initially unused, became what they are now in Emacs >> 17 >> >> M-o: was unused before Emacs 22, was used for facemenu in Emacs 22-27 >> >> M-r: was initially unused, became 'move-to-window-line' in Emacs 16, >> then became 'move-to-window-line-top-bottom', which changed its >> semantics when it is repeated >> >> M-s: was initially unused, became center-line for text-modes in Emacs >> 16, and is used for search-like commands since Emacs 23 > > Thanks, this matches my recollection: only 3 keys (M-g, M-o, M-s) were > changed recently enough to count for this discussion. The rest are > ancient history (more than 35 years ago), and C-l's change is very much > minor (it _adds_ to the previous user-visible behavior, but doesn't > change it). > You forget M-r, changed in Emacs 23. > > So my summary would be different: since 35 years ago, only a handful of > these keys were ever changed. > I was replying to Alfred, who said that nothing had changed during the last 40 years.