From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.bugs Subject: bug#20307: 25.0.50; (regexp-opt nil ...) returns "" Date: Sun, 12 Apr 2015 11:50:09 +0200 Message-ID: <876191vfou.fsf@fencepost.gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1428832281 23933 80.91.229.3 (12 Apr 2015 09:51:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 12 Apr 2015 09:51:21 +0000 (UTC) To: 20307@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Apr 12 11:51:11 2015 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 1YhEXk-0002PI-Dp for geb-bug-gnu-emacs@m.gmane.org; Sun, 12 Apr 2015 11:51:08 +0200 Original-Received: from localhost ([::1]:44762 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEXj-0006ty-Rn for geb-bug-gnu-emacs@m.gmane.org; Sun, 12 Apr 2015 05:51:07 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39382) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEXf-0006tp-RM for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:51:05 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YhEXe-0004d0-El for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:51:03 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:35647) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEXe-0004cw-AK for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1YhEXe-0004JR-3N for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:51:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: David Kastrup Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 12 Apr 2015 09:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 20307 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.142883224516549 (code B ref -1); Sun, 12 Apr 2015 09:51:01 +0000 Original-Received: (at submit) by debbugs.gnu.org; 12 Apr 2015 09:50:45 +0000 Original-Received: from localhost ([127.0.0.1]:53656 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YhEXM-0004Iq-Qi for submit@debbugs.gnu.org; Sun, 12 Apr 2015 05:50:45 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:54058) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YhEXK-0004Ic-Hr for submit@debbugs.gnu.org; Sun, 12 Apr 2015 05:50:43 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YhEXD-0004XL-Sy for submit@debbugs.gnu.org; Sun, 12 Apr 2015 05:50:37 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:48073) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEXD-0004XH-N5 for submit@debbugs.gnu.org; Sun, 12 Apr 2015 05:50:35 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39332) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEXC-0006aa-1V for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:50:35 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YhEXA-0004X0-6g for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:50:33 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:36250) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEXA-0004Ww-44 for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:50:32 -0400 Original-Received: from localhost ([127.0.0.1]:52411 helo=lola) by fencepost.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YhEX9-00014y-Mr for bug-gnu-emacs@gnu.org; Sun, 12 Apr 2015 05:50:31 -0400 Original-Received: by lola (Postfix, from userid 1000) id 0D13AE0562; Sun, 12 Apr 2015 11:50:09 +0200 (CEST) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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:101448 Archived-At: Both M-: (regexp-opt nil) RET and M-: (regexp-opt nil t) RET return "". However, they should return a regexp matching _nothing_ rather than everything, and the second invocation should also count as one \(\) pairing. So something like "[b-a]" and "\([b-a]\)" or "[^[:unibyte:][:multibyte:]]" or something similarly contorted. In GNU Emacs 25.0.50.1 (i686-pc-linux-gnu, GTK+ Version 3.12.2) of 2015-03-04 on lola Repository revision: ca2b0e220ee6b2cab538e84703559696ce477e71 Windowing system distributor `The X.Org Foundation', version 11.0.11600000 System Description: Ubuntu 14.10 Configured using: `configure --without-toolkit-scroll-bars' Configured features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS NOTIFY LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB Important settings: value of $LC_MONETARY: en_US.UTF-8 value of $LC_NUMERIC: en_US.UTF-8 value of $LC_TIME: en_US.UTF-8 value of $LANG: en_US.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix Major mode: Group Minor modes in effect: gnus-undo-mode: t diff-auto-refine-mode: t TeX-PDF-mode: t desktop-save-mode: t minibuffer-electric-default-mode: t tooltip-mode: t global-eldoc-mode: t electric-indent-mode: t mouse-wheel-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 buffer-read-only: t line-number-mode: t Recent messages: nnml: Reading incoming mail (no new mail)...done Reading active file from private via nnml...done Reading active file from archive via nnfolder...done Reading active file via nndraft...done Reading active file from /home/dak3/Mail/family via nndir...done Checking new news...done Opening nnml server on private...done Expiring articles...done "" [2 times] Auto-saving... Quit Load-path shadows: None found. Features: (shadow nnir emacsbug sendmail mule-util sort smiley gnus-cite flow-fill mm-archive mail-extr gnus-bcklg gnus-kill gnus-async qp gnus-ml disp-table pop3 nndir nndraft nnmh gnutls network-stream nsm auth-source cl-macs eieio gv eieio-core cl-generic pcase starttls nnml nnfolder nnnil gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg gnus-art mm-uu mml2015 mm-view mml-smime smime password-cache dig mailcap nntp gnus-cache gnus-sum gnus-group gnus-undo gnus-start gnus-cloud nnimap nnmail mail-source tls utf7 netrc nnoo parse-time gnus-spec gnus-int gnus-range gnus-win warnings help-mode debug tar-mode message format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev gmm-utils mailheader sh-script smie executable make-mode smerge-mode nxml-uchnm rng-xsd xsd-regexp rng-cmpct rng-nxml rng-valid rng-loc rng-uri rng-parse nxml-parse rng-match rng-dt rng-util rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap nxml-util nxml-glyph nxml-enc xmltok python json autorevert filenotify add-log tex-info texinfo latexenc jka-compr preview prv-emacs tex-bar toolbar-x noutline outline latex edmacro kmacro tex-style reftex-dcr reftex-auc reftex reftex-vars dired-x dired scheme vc vc-dispatcher vc-git diff-mode easy-mmode lilypond-mode compile comint ansi-color ring font-latex byte-opt bytecomp byte-compile cl-extra seq cconv plain-tex tex-buf tex dbus xml crm cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs info easymenu package epg-config advice desktop frameset minibuf-eldef gnus gnus-ems nnheader gnus-util mail-utils mm-util help-fns mail-prsvr wid-edit cl-loaddefs cl-lib cus-start cus-load preview-latex tex-site auto-loads server time-date tooltip eldoc 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 elisp-mode 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 cl-preloaded 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 8 624077 47421) (symbols 24 53351 145) (miscs 20 1251 1014) (strings 16 106692 17355) (string-bytes 1 3514198) (vectors 8 38616) (vector-slots 4 967485 13436) (floats 8 355 575) (intervals 28 23406 1055) (buffers 520 305) (heap 1024 69082 6867)) -- David Kastrup