Received: (at 45016) by debbugs.gnu.org; 23 Jan 2021 23:27:34 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Jan 23 18:27:34 2021 Received: from localhost ([127.0.0.1]:35608 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1l3SJa-0006pf-8E for submit <at> debbugs.gnu.org; Sat, 23 Jan 2021 18:27:34 -0500 Received: from quimby.gnus.org ([95.216.78.240]:57160) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <larsi@HIDDEN>) id 1l3SJY-0006pP-C5 for 45016 <at> debbugs.gnu.org; Sat, 23 Jan 2021 18:27:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=SU0Au7lWlysUFWg6sK3frq5zer2jrtuyhxwf8r7reco=; b=WlsiUjdYxnkPYdmB+yvEqhZgwd /p8NycZNB/eWT7O60BYp2VyyEQofHYMTzSc/sC/OHYN7lCf1XEePg9XjaowHAqNWORwB+ih0+KbwN LKP0MePdkSB0/nTtSobeichNh5Gh94yLsdyAd+yRebDlUHH4npMzgP1F5TEds40Y5uWc=; Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1l3SJM-0006iJ-VC; Sun, 24 Jan 2021 00:27:26 +0100 From: Lars Ingebrigtsen <larsi@HIDDEN> To: Guilhem Bichot <guilhem.bichot@HIDDEN> Subject: Re: bug#45016: 26.3; when in ediff-current-file, 'D' (view diff) shows empty diff References: <d8511480-4240-b124-6b00-5cc32380d1d8@HIDDEN> X-Now-Playing: Mourning A BLKstar's _The Cycle_: "Sense Of An Ending" Date: Sun, 24 Jan 2021 00:27:19 +0100 In-Reply-To: <d8511480-4240-b124-6b00-5cc32380d1d8@HIDDEN> (Guilhem Bichot's message of "Wed, 2 Dec 2020 21:52:56 +0100") Message-ID: <87im7nqlns.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Guilhem Bichot <guilhem.bichot@HIDDEN> writes: > * start emacs -Q > * create a file named, for example, /tmp/a > * put a line of text in it, save it > * add some characters to this line, don't save > * launch M-x ediff-current-file > * press D to [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 45016 Cc: 45016 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Guilhem Bichot <guilhem.bichot@HIDDEN> writes: > * start emacs -Q > * create a file named, for example, /tmp/a > * put a line of text in it, save it > * add some characters to this line, don't save > * launch M-x ediff-current-file > * press D to view the diff > * a buffer opens to show the diff but it is empty. I expected to see a > non-empty diff (a context diff, as ediff-custom-diff-options is at its > default "-c"). > * if instead of D I press C-u D then I do get a non-empty plain diff > (non-context, non-unified). This bug is still present in Emacs 28. This is how the `D' command starts: (defun ediff-show-diff-output (arg) (interactive "P") [...] (let ((buf (cond ((and arg (ediff-buffer-live-p ediff-diff-buffer)) ediff-diff-buffer) ((ediff-buffer-live-p ediff-custom-diff-buffer) ediff-custom-diff-buffer) There's helpfully no doc string here (or comments) about what `arg' is meant to express, but if we have `arg', we work on `ediff-diff-buffer' (and this works), and if we don't have `arg', then `ediff-custom-diff-buffer' is used (and this doesn't work). I'm pretty unfamiliar with ediff -- does anybody know what the intention here is for the prefix arg? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
bug-gnu-emacs@HIDDEN:bug#45016; Package emacs.
Full text available.Received: (at 45016) by debbugs.gnu.org; 3 Dec 2020 11:19:36 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Dec 03 06:19:36 2020 Received: from localhost ([127.0.0.1]:38658 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kkme8-00089i-Dy for submit <at> debbugs.gnu.org; Thu, 03 Dec 2020 06:19:36 -0500 Received: from smtp03.smtpout.orange.fr ([80.12.242.125]:17173 helo=smtp.smtpout.orange.fr) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <guilhem.bichot@HIDDEN>) id 1kkme6-00089R-54 for 45016 <at> debbugs.gnu.org; Thu, 03 Dec 2020 06:19:34 -0500 Received: from [192.168.1.10] ([90.38.22.79]) by mwinf5d26 with ME id znKN2300B1iNpua03nKRZk; Thu, 03 Dec 2020 12:19:25 +0100 X-ME-Helo: [192.168.1.10] X-ME-Auth: Z3VpbGhlbS5iaWNob3RAd2FuYWRvby5mcg== X-ME-Date: Thu, 03 Dec 2020 12:19:25 +0100 X-ME-IP: 90.38.22.79 To: 45016 <at> debbugs.gnu.org From: Guilhem Bichot <guilhem.bichot@HIDDEN> Subject: additional information Message-ID: <74325a41-96e4-84f3-41fa-a1dcff4dacde@HIDDEN> Date: Thu, 3 Dec 2020 12:19:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 45016 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Apparently a person hit this issue in 2016 too: https://emacs.stackexchange.com/questions/22090/emacs-show-diff-output-produces-empty-buffer
bug-gnu-emacs@HIDDEN:bug#45016; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 2 Dec 2020 21:04:41 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Dec 02 16:04:41 2020 Received: from localhost ([127.0.0.1]:37553 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kkZIn-00040Y-4J for submit <at> debbugs.gnu.org; Wed, 02 Dec 2020 16:04:41 -0500 Received: from lists.gnu.org ([209.51.188.17]:40428) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <guilhem.bichot@HIDDEN>) id 1kkZ8D-0001Zc-C1 for submit <at> debbugs.gnu.org; Wed, 02 Dec 2020 15:53:45 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52976) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <guilhem.bichot@HIDDEN>) id 1kkZ8D-000524-3h for bug-gnu-emacs@HIDDEN; Wed, 02 Dec 2020 15:53:45 -0500 Received: from smtp01.smtpout.orange.fr ([80.12.242.123]:25899 helo=smtp.smtpout.orange.fr) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.90_1) (envelope-from <guilhem.bichot@HIDDEN>) id 1kkZ88-0001oB-0f for bug-gnu-emacs@HIDDEN; Wed, 02 Dec 2020 15:53:43 -0500 Received: from [192.168.1.10] ([90.38.22.79]) by mwinf5d53 with ME id zYsu230041iNpua03Yt9NK; Wed, 02 Dec 2020 21:53:09 +0100 X-ME-Helo: [192.168.1.10] X-ME-Auth: Z3VpbGhlbS5iaWNob3RAd2FuYWRvby5mcg== X-ME-Date: Wed, 02 Dec 2020 21:53:09 +0100 X-ME-IP: 90.38.22.79 To: bug-gnu-emacs@HIDDEN From: Guilhem Bichot <guilhem.bichot@HIDDEN> Subject: 26.3; when in ediff-current-file, 'D' (view diff) shows empty diff Message-ID: <d8511480-4240-b124-6b00-5cc32380d1d8@HIDDEN> Date: Wed, 2 Dec 2020 21:52:56 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: none client-ip=80.12.242.123; envelope-from=guilhem.bichot@HIDDEN; helo=smtp.smtpout.orange.fr X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Wed, 02 Dec 2020 16:04:39 -0500 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Hello! * start emacs -Q * create a file named, for example, /tmp/a * put a line of text in it, save it * add some characters to this line, don't save * launch M-x ediff-current-file * press D to view the diff * a buffer opens to show the diff but it is empty. I expected to see a non-empty diff (a context diff, as ediff-custom-diff-options is at its default "-c"). * if instead of D I press C-u D then I do get a non-empty plain diff (non-context, non-unified). I'm using Emacs 26.3 from Ubuntu 20.04. I reproduced it on another Emacs installation on another computer (CentOS 7) where I built Emacs 27.1 from source. Thank you for bringing Emacs to developers. In GNU Emacs 26.3 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.14) of 2020-03-26, modified by Debian built on lcy01-amd64-020 Windowing system distributor 'The X.Org Foundation', version 11.0.12008000 System Description: Ubuntu 20.04.1 LTS Recent messages: Saving file /tmp/a... Wrote /tmp/a Making completion list... Computing differences between ediffZdQdH1 and aEcIRJR ... Buffer A: Processing difference region 0 of 1 Buffer B: Processing difference region 0 of 1 Processing difference regions ... done Refining difference region 1 ... Quit this Ediff session? (y or n) y Making completion list... 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 --enable-libsystemd --with-pop=yes --enable-locallisppath=/etc/emacs:/usr/local/share/emacs/26.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/26.3/site-lisp:/usr/share/emacs/site-lisp --with-sound=alsa --without-gconf --with-mailutils --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --enable-libsystemd --with-pop=yes --enable-locallisppath=/etc/emacs:/usr/local/share/emacs/26.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/26.3/site-lisp:/usr/share/emacs/site-lisp --with-sound=alsa --without-gconf --with-mailutils --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars 'CFLAGS=-g -O2 -fdebug-prefix-map=/build/emacs-mEZBk7/emacs-26.3+1=. -fstack-protector-strong -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro'' Configured features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS GLIB NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM THREADS LIBSYSTEMD LCMS2 Important settings: value of $LANG: fr_FR.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix Major mode: Fundamental Minor modes in effect: diff-auto-refine-mode: t tooltip-mode: t global-eldoc-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 Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message rmc puny seq byte-opt gv bytecomp byte-compile cconv dired dired-loaddefs format-spec rfc822 mml mml-sec password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils diff-mode easymenu easy-mmode ediff-merg ediff-wind ediff-diff ediff-mult ediff-help ediff-init cl-loaddefs cl-lib ediff-util ediff elec-pair time-date mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray 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 threads dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty make-network-process emacs) Memory information: ((conses 16 105677 13166) (symbols 48 21758 1) (miscs 40 67 140) (strings 32 31945 1163) (string-bytes 1 877549) (vectors 16 15315) (vector-slots 8 519098 11532) (floats 8 68 143) (intervals 56 282 0) (buffers 992 16))
Guilhem Bichot <guilhem.bichot@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#45016; Package emacs.
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