From debbugs-submit-bounces@debbugs.gnu.org Tue Aug 01 11:24:06 2017 Received: (at submit) by debbugs.gnu.org; 1 Aug 2017 15:24:06 +0000 Received: from localhost ([127.0.0.1]:37092 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcZ1i-0008LS-CF for submit@debbugs.gnu.org; Tue, 01 Aug 2017 11:24:06 -0400 Received: from eggs.gnu.org ([208.118.235.92]:34155) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcVtX-0003Xb-4k for submit@debbugs.gnu.org; Tue, 01 Aug 2017 08:03:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dcVtQ-0006i5-PV for submit@debbugs.gnu.org; Tue, 01 Aug 2017 08:03:22 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: * X-Spam-Status: No, score=1.1 required=5.0 tests=BAYES_50, FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:60545) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dcVtQ-0006hu-MG for submit@debbugs.gnu.org; Tue, 01 Aug 2017 08:03:20 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53319) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dcVtO-0008TP-3M for bug-gnu-emacs@gnu.org; Tue, 01 Aug 2017 08:03:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dcVtK-0006ea-Ru for bug-gnu-emacs@gnu.org; Tue, 01 Aug 2017 08:03:18 -0400 Received: from mail-pg0-x242.google.com ([2607:f8b0:400e:c05::242]:33644) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dcVtK-0006e7-M0 for bug-gnu-emacs@gnu.org; Tue, 01 Aug 2017 08:03:14 -0400 Received: by mail-pg0-x242.google.com with SMTP id u185so2410094pgb.0 for ; Tue, 01 Aug 2017 05:03:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version; bh=r1qosa4+AhWjJS6DhawbrxtlHUm/vMqXG1hajhMgvNQ=; b=iZIDmR4kh6g8hfAmt6V8zFKbYWAqKSElXxFvHw/22vlnlgGva66AJpP/CxG42fj0uM MUNoP/6xXypVdqf8gb78TaiAgLVz03BIYfVNfA0HkK7BNqTvZ4DuGvSNEBQVlNS45UAk pS0Cun05QkezWsvMaG2HqQv99eAkFuRriKfydi9oWrdMfMYf3MCiG8CkrHRa1KQywTQ4 QOTFPMNjHua8yOfA1PegycBT7IuJJl7foFICiUHHVkk/8sLVFR8a+PBmVkoo5vVbOUB9 YuvgLb9Oe+KgukGYTtYweav5Jd2NxXEJwlutrO5jrO3SNWpTAGe02dXLpY1F5KdqzstZ Es+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version; bh=r1qosa4+AhWjJS6DhawbrxtlHUm/vMqXG1hajhMgvNQ=; b=Nz2ZyLqnPSzoE38GfCYN4DaVs2/iX2IwPEYDfsp78wIk+zZ6XcLiQguqYpfnxej5c7 b4gJRuKlSEUvoKIxcpSjEm6bOUPnYqD7Am9EbF7GKYoT/buDKiha7HdcQCJ+eNYF4mjy A/3uJgrGF/uI1CtEZlInRytS77wESsAaRh9jPjuJxjdEswN8dzsHsx5nfazb3/evrls7 VSrt4KCva2Qh81kBpK631YnwGNh8IIwTiri2OClJREcyOzIGeh1bBDEX6kJO8wWp6sob SEHWPDANF2MK2G9XB+o448m4LBfs1qrYB9j14R+J21dHTDJjMPbZEkHLFHP2S2T520f1 ZcVQ== X-Gm-Message-State: AIVw1127aKnGLIL2LRiB5P/nGhRDrRjirKD87N/FzNNtAZzSU7qX2p2x bjIazHdcQH2qfC9n X-Received: by 10.84.196.1 with SMTP id k1mr14139918pld.137.1501588991906; Tue, 01 Aug 2017 05:03:11 -0700 (PDT) Received: from hw ([58.200.129.152]) by smtp.gmail.com with ESMTPSA id d3sm3085305pgf.75.2017.08.01.05.03.10 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 01 Aug 2017 05:03:11 -0700 (PDT) From: hw To: bug-gnu-emacs@gnu.org Subject: 24.5; local-scope; construct list Date: Tue, 01 Aug 2017 20:02:17 +0800 Message-ID: <87h8xrlcmu.fsf@hw.i-did-not-set--mail-host-address--so-tickle-me> MIME-Version: 1.0 Content-Type: text/plain X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -3.8 (---) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Tue, 01 Aug 2017 11:24:05 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.8 (---) Look at this code: (defun test () "Test" (setq a '(A)) (push 'B a) (nreverse a)) (message "%s" (test)) (message "%s" (test)) The result of the code run on my emacs is: (A B) (B A B) Since 'a' is a local variable, it is expected to be lke this: (A B) (A B) If I substitute '(setq a '(A))' with '(setq a (list 'A))', I get the result I expect. I think there is no difference between the two ways of constructing list(quote expression or list function), but the result is different.If my understanding is right, I doubt that the local binding or optimization of elisp cause this problem. Can anyone tell me the reason or tell me this is really a bug so I will be careful with constructing list. Thank you! In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9) of 2016-04-17 on lgw01-04, modified by Debian System Description: Ubuntu 16.04.2 LTS Configured using: `configure --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro'' Important settings: value of $LC_MONETARY: zh_CN.UTF-8 value of $LC_NUMERIC: zh_CN.UTF-8 value of $LC_TIME: zh_CN.UTF-8 value of $LANG: en_US.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix Major mode: Messages Minor modes in effect: global-linum-mode: t linum-mode: t tooltip-mode: t electric-indent-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t buffer-read-only: t line-number-mode: t transient-mark-mode: t Recent messages: (Y X A) tt: (Y X A) (A X Y) (A B) (4 3 2 1) SBSBSB end 0.187039 Making completion list... Load-path shadows: /usr/share/emacs/24.5/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup /usr/share/emacs24/site-lisp/latex-cjk-thai/thai-word hides /usr/share/emacs/24.5/lisp/language/thai-word Features: (shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util help-fns mail-prsvr mail-utils help-mode init config-auto-save smart-auto-save pp auto-save-code auto-save-custom config-ui config-theme solarized-theme solarized-definitions color-theme-custom linum ui-custom config-miscellany file-lib file-custom miscellany-custom config-elpa info easymenu package epg-config elpa-custom global-custom path-lib file-code xterm time-date tooltip electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind gfilenotify dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs) Memory information: ((conses 16 183902 6810) (symbols 48 22987 0) (miscs 40 133 143) (strings 32 35066 12364) (string-bytes 1 870136) (vectors 16 12013) (vector-slots 8 397093 3882) (floats 8 70 746) (intervals 56 294 23) (buffers 960 12) (heap 1024 32681 704)) From debbugs-submit-bounces@debbugs.gnu.org Tue Aug 01 11:46:46 2017 Received: (at 27910-done) by debbugs.gnu.org; 1 Aug 2017 15:46:46 +0000 Received: from localhost ([127.0.0.1]:37124 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcZNe-0002Ib-0S for submit@debbugs.gnu.org; Tue, 01 Aug 2017 11:46:46 -0400 Received: from mx2.suse.de ([195.135.220.15]:54377 helo=mx1.suse.de) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcZNc-0002IT-IT for 27910-done@debbugs.gnu.org; Tue, 01 Aug 2017 11:46:44 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 58A2DAC94; Tue, 1 Aug 2017 15:46:43 +0000 (UTC) From: Andreas Schwab To: hw Subject: Re: bug#27910: 24.5; local-scope; construct list References: <87h8xrlcmu.fsf@hw.i-did-not-set--mail-host-address--so-tickle-me> X-Yow: I just bought FLATBUSH from MICKEY MANTLE! Date: Tue, 01 Aug 2017 17:46:42 +0200 In-Reply-To: <87h8xrlcmu.fsf@hw.i-did-not-set--mail-host-address--so-tickle-me> (hw's message of "Tue, 01 Aug 2017 20:02:17 +0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 27910-done Cc: 27910-done@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) On Aug 01 2017, hw wrote: > Look at this code: > > (defun test () > "Test" > (setq a '(A)) > (push 'B a) > (nreverse a)) > > (message "%s" (test)) > (message "%s" (test)) > > The result of the code run on my emacs is: > > (A B) > (B A B) > > Since 'a' is a local variable, it is expected to be lke this: This is irrelevant, nreverse is destructively modifying the literal in the function: ELISP> (symbol-function 'test) (lambda nil "Test" (setq a '(A B)) (push 'B a) (nreverse a)) Andreas. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different." From debbugs-submit-bounces@debbugs.gnu.org Tue Aug 01 12:02:14 2017 Received: (at 27910) by debbugs.gnu.org; 1 Aug 2017 16:02:14 +0000 Received: from localhost ([127.0.0.1]:37140 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcZcc-0004SE-7r for submit@debbugs.gnu.org; Tue, 01 Aug 2017 12:02:14 -0400 Received: from mail-oi0-f42.google.com ([209.85.218.42]:33169) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcZcX-0004M2-40 for 27910@debbugs.gnu.org; Tue, 01 Aug 2017 12:02:12 -0400 Received: by mail-oi0-f42.google.com with SMTP id d71so14674010oih.0 for <27910@debbugs.gnu.org>; Tue, 01 Aug 2017 09:02:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to; bh=0vpBRXTUVd9tRsC0cLH0H8vxr0sgFhRT9T1q8rhAKRU=; b=ZzXzXj7laMbj0dEEnf6hkligtPQmcF8LAnFcd9hguf3T7quhPin9GO4WzWw82t9PrW kF4/fAzJzEmys6sj53nbL9CESqN1SWGrdb9VvkGe9zeRo7C8sKkZ7TTxGC1erQ1WcxIw eY9LcmM3dqzxdwe7VcHmBOyHpSNRcnZNVHsbpro3CJQRP4DA+mkpy7mw2CtBaHm3oh+Y 98J85gP5Ktt+KY1cUs0zvn4tXMcln5nRx38hVYO/zlSfe+DmTNIhYuc7SzrOu99tN0U4 t6EyO6KvMCiYw4SD3UTomx4x1fcWS9RMgDrZGVI7S2ehRRj8xRzS0h6VZFl0R3conYXf O5KQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to; bh=0vpBRXTUVd9tRsC0cLH0H8vxr0sgFhRT9T1q8rhAKRU=; b=DuO72DucZMIb1XMHlpDaEDhvsVdZrjnr6QdrXh838wnYtzBV5jgaJ7+vxWLumdmrAi AIneS3FDPtiIQv5/d3+r4diLZm6hQcKtx2THn1JOauiXF6HoOWIpsbSoM16h87S823Tc mQlBBsuzODD0TqVS3jzUs0r8XrpNGyacq5iy+5ZLTYMf6ixvBDBQWlb3xyrMmBWgqKlC /HbP6E4ZCjZyInHMMC6eAuwJwOHM8iGz25JOVlu99e6IvK5Q8vRMaPk75WcE2zVTskL8 TVOG/K3qLe9+SZoiSsAA8yA6qey+/sblus92xjkYiiAA1pyZb8me0OKeFUblQS/8rqj6 5HRA== X-Gm-Message-State: AIVw1134uzWrQ4IDg1brjOIRFmUbyXjyCB+ggl3BEa7YnatMx5EOYsqn wevfj3VcHCfIlNM7AMyuQI3RS5C4L7/0 X-Received: by 10.202.68.2 with SMTP id r2mr16235267oia.62.1501603322823; Tue, 01 Aug 2017 09:02:02 -0700 (PDT) MIME-Version: 1.0 Received: by 10.74.113.6 with HTTP; Tue, 1 Aug 2017 09:02:01 -0700 (PDT) In-Reply-To: References: <87h8xrlcmu.fsf@hw.i-did-not-set--mail-host-address--so-tickle-me> From: Noam Postavsky Date: Tue, 1 Aug 2017 12:02:01 -0400 X-Google-Sender-Auth: -wngtSlDpKOwgilru2TSbFSFaX8 Message-ID: Subject: Re: bug#27910: 24.5; local-scope; construct list To: 27910@debbugs.gnu.org, Andreas Schwab , huwei9527@gmail.com Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.7 (/) X-Debbugs-Envelope-To: 27910 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: 0.7 (/) On Tue, Aug 1, 2017 at 11:46 AM, Andreas Schwab wrote: > > This is irrelevant, nreverse is destructively modifying the literal in > the function: See also `(elisp) Rearrangement'[1], and Bug#23417. [1]: https://www.gnu.org/software/emacs/manual/html_node/elisp/Rearrangement.html From unknown Mon Jun 23 07:49:58 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Wed, 30 Aug 2017 11:24:03 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator