From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: hw Newsgroups: gmane.emacs.bugs Subject: bug#27910: 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> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1501601246 22399 195.159.176.226 (1 Aug 2017 15:27:26 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 1 Aug 2017 15:27:26 +0000 (UTC) To: 27910@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Aug 01 17:27:19 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dcZ4k-0005NQ-4d for geb-bug-gnu-emacs@m.gmane.org; Tue, 01 Aug 2017 17:27:14 +0200 Original-Received: from localhost ([::1]:43241 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dcZ4q-0007OR-5X for geb-bug-gnu-emacs@m.gmane.org; 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X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x 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 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:135217 Archived-At: 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))