From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eduardo Ochs Newsgroups: gmane.emacs.help Subject: Re: Morally equivalent Date: Sat, 15 Oct 2022 23:55:52 -0300 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="35189"; mail-complaints-to="usenet@ciao.gmane.io" Cc: help-gnu-emacs To: John Haman Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Oct 16 04:56:27 2022 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 1ojtpD-0008v7-Ri for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 16 Oct 2022 04:56:27 +0200 Original-Received: from localhost ([::1]:45960 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ojtpC-0004KC-7Y for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 15 Oct 2022 22:56:26 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60800) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ojtoW-0004Jp-BI for help-gnu-emacs@gnu.org; Sat, 15 Oct 2022 22:55:44 -0400 Original-Received: from mail-il1-x133.google.com ([2607:f8b0:4864:20::133]:41925) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ojtoU-00042A-6R for help-gnu-emacs@gnu.org; Sat, 15 Oct 2022 22:55:43 -0400 Original-Received: by mail-il1-x133.google.com with SMTP id y17so4361053ilq.8 for ; Sat, 15 Oct 2022 19:55:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=wMtWpivVr+qb0JrAzQwG+QGzbcGCf0pi1aFP5wdLa1w=; b=NIc0f5L+BJdULIQRU+fnvpiRux31+JqdWBIwa7AxggCD3ZVdCH31v+gltNexkBKBP6 wV7MaqytQqzvdTsxV3MR5+OZjKMa5dVQEUmUSr2G7v5dxmfBTuaYqHNfTiKY0MoJkKwt uV/HvZKZFalgwUOhDNkeGiXnoCtL5LZaLQAIxVbo4arT9ZCPuKW4cCdaXVzhl3QxoJjZ IW5g8yPJb99pAl0fwZxr4DnAkizWN0JpLNhYuzu57XSf388IyL9MlEzkv9nx54TsZCh9 333PLjjYrbRERS7WIHGKHW7zqALZ12MUmOmOvFZ3p6wd1NDxGMplPtj1Z3wwCAVRk47l 77IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=wMtWpivVr+qb0JrAzQwG+QGzbcGCf0pi1aFP5wdLa1w=; b=FXi7BOmViJfMn/Cz+hFByHJe7EEJuVucZCHxop3P3DmvByVOWcaImSyu4vTxEj2/Qa gkW97Migd9bv78N15MyoKAT4aiYzcGtinl67u/YTV/4cbr0Cu7ApCzr/UruPIW+x1QgX uYnI3GUi5yd1nC+UhB1SBE0UmBewSaQqyO7Y1ErrwxRVo0BY+qk/GmcdEYDg6J6DZqB+ DDR3voQVTuTnKgeSHviTi5u9CXkSI2+yxPBFOgITCb73ZYkS5AG5rr2/8ZJIDV+s0L9f 8zLzx4nMCoRW64FyGJYopCH4B8lACDPtLZDuWYT5CWOKlBgcwpVCZ7hKJEDFo22TtG/t atAw== X-Gm-Message-State: ACrzQf13KOiZLK6RcjZhNwDDm5fFcPaPH2pBs3KVLRe8NwrkyfqP1Qfc PkmpiQ3RaV3YHEqE6I1I0MEgydKkPG+ZQ7xXzl0= X-Google-Smtp-Source: AMsMyM7r7yWI0GX20hBzkPLl/LyprOo8vyGTfD0IgGq7pZLC/CrGeJ03lxqVbJeAYQa8xXNoML91YFYe7yqadG7fyZE= X-Received: by 2002:a92:a00c:0:b0:2e9:a556:8939 with SMTP id e12-20020a92a00c000000b002e9a5568939mr2110035ili.50.1665888939977; Sat, 15 Oct 2022 19:55:39 -0700 (PDT) In-Reply-To: Received-SPF: pass client-ip=2607:f8b0:4864:20::133; envelope-from=eduardoochs@gmail.com; helo=mail-il1-x133.google.com 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, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Content-Filtered-By: Mailman/MimeDel 2.1.29 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" Xref: news.gmane.io gmane.emacs.help:139973 Archived-At: Maybe this? https://eugeniacheng.com/wp-content/uploads/2017/02/cheng-morality.pdf On Sat, 15 Oct 2022, 23:50 John Haman, wrote: > The documentation for push is > > > push is a Lisp macro in =E2=80=98subr.el=E2=80=99. > > > > (push NEWELT PLACE) > > > > Add NEWELT to the list stored in the generalized variable PLACE. > > This is morally equivalent to (setf PLACE (cons NEWELT PLACE)), > > except that PLACE is evaluated only once (after NEWELT). > > > > Other relevant functions are documented in the list group. > > Probably introduced at or before Emacs version 21.1. > > What is a 'moral equivalence' in Emacs Lisp? > > -- > Dr. John Haman > Bethesda, MD > > > >