From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Dan Torop Newsgroups: gmane.emacs.bugs Subject: bug#22490: 24.5; (newline 0) fails when point not after newline Date: Fri, 29 Jan 2016 13:46:47 -0500 Message-ID: <1454093207.2049756.506462746.30C28965@webmail.messagingengine.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1454099547 31731 80.91.229.3 (29 Jan 2016 20:32:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 29 Jan 2016 20:32:27 +0000 (UTC) To: 22490@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Jan 29 21:32:15 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aPFiE-0003wL-5E for geb-bug-gnu-emacs@m.gmane.org; Fri, 29 Jan 2016 21:32:10 +0100 Original-Received: from localhost ([::1]:36452 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aPFiD-0005YC-Fo for geb-bug-gnu-emacs@m.gmane.org; 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a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-sasl-enc :x-sasl-enc; s=smtpout; bh=B7eR0vkC9z55fHq2QA7DkdZu7OU=; b=VEiwd z70v4tu9Sl2kpwaLOcHvx7JnPh5es2rqkvFNgUPw96K9Q0cPlgCU1CTbX49XKmlt ZIEUSGwJHe0wIkwiElqSMeI8SJ4Rmlmkf+9graFjS/vYNxv8/RLgDJ4BtMIxd0hU phucgoo8gQPQlxPCxqa07Z4JovT/gj22D77qJc= Original-Received: by web2.nyi.internal (Postfix, from userid 99) id 36FAF54094A; Fri, 29 Jan 2016 13:46:47 -0500 (EST) X-Sasl-Enc: gGpKwETbqdRK2SDOl2j872PzMEXoWIZtFlm2kCmkPjqV 1454093207 X-Mailer: MessagingEngine.com Webmail Interface - ajax-6cda141f X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Mailman-Approved-At: Fri, 29 Jan 2016 15:31:51 -0500 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:112088 Archived-At: The function "newline" with an argument of 0 will fail unless called when the character before the point is a newline. To test, start a new Emacs session, type space, then evaluate "(newline 0)". It should fail with a backtrace: Debugger entered--Lisp error: (cl-assertion-failed (eq 10 (char-before))) signal(cl-assertion-failed ((eq 10 (char-before)))) #[0 "`Sf\304=\204^N^@\305\306\307C\"\210^K\203^[^@\310`\311\300!Z`\"\210\212\302b\210\312 \210\313\314!\2034^@\315 \316V\2034^@`\317 |\210)\301\206=^@\320\321\322\"\207" [0 nil 193 use-hard-newlines 10 signal cl-assertion-failed (eq 10 (char-before)) set-hard-newline-properties prefix-numeric-value beginning-of-line looking-at "[ ]$" current-left-margin 0 line-end-position move-to-left-margin nil t] 4 "\n\n(fn)"]() self-insert-command(0) newline(0) eval((newline 0) nil) eval-expression((newline 0) nil) call-interactively(eval-expression nil nil) command-execute(eval-expression) If one instead types a newline then (newline 0), the call will be a NOP, as expected. This appears to be the result of commit 62ee8b1a59d5343197cb59d9f0a52e07a23af1d8, intended to catch bug # 18913, in particular the (cl-assert (eq ?\n (char-before))) in post-self-insert-hook. While it may seem absurd to execute (newline 0), this can have a purpose, e.g. when programmatically inserting an arbitrary number of newlines at the start of an empty buffer. In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.6) of 2016-01-22 on binet, modified by Debian Windowing system distributor `The X.Org Foundation', version 11.0.11703000 System Description: Debian GNU/Linux testing (stretch) 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,-z,relro' Important settings: value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Entering debugger... Back to top level. Making completion list... Load-path shadows: None found. 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 easymenu debug 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 72870 4889) (symbols 48 17717 0) (miscs 40 39 113) (strings 32 9443 4228) (string-bytes 1 261156) (vectors 16 9072) (vector-slots 8 385056 15878) (floats 8 65 84) (intervals 56 229 4) (buffers 960 13) (heap 1024 16429 964))