From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Henri Menke via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#50321: 28.0.50; feature/pgtk: cannot scroll with xterm-mouse-mode Date: Wed, 01 Sep 2021 09:28:24 +0200 Message-ID: <4a6765a94c1a9c514c635e563586d0363f4f7e50.camel@henrimenke.de> Reply-To: Henri Menke Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22563"; mail-complaints-to="usenet@ciao.gmane.io" To: 50321@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 01 18:09:34 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mLSnu-0005hD-Jn for geb-bug-gnu-emacs@m.gmane-mx.org; 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a=rsa-sha256; c=relaxed/simple; d=henrimenke.de; s=mail; t=1630481304; bh=xPv9MV7lOw619WaNyfpnkYlaSnVP2pEKG99ymWntxrE=; h=Subject:From:To:Date; b=PsySsWXehFJz4r0kM/da2FHvLJr3OHkowB+TTCRpj/WX214K16j8IG+t6o9bry3XL lRZj7FDw2PlbLchXKsVuM/yaJRzhXRvVCHncfpez+UBQWx7WkYi5bnHdDyF55ca2cj eBN2hFsK6ujy8vk9UTJeeD9pHDKpfAW8ba+6Ugug= Received-SPF: pass client-ip=2a03:4000:33:722::1; envelope-from=henri@henrimenke.de; helo=henrimenke.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 01 Sep 2021 11:26:55 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:213206 Archived-At: The easiest reproducer is to launch Emacs like this and then scroll using the mouse wheel $ emacs -Q $ emacs -nw -Q --eval '(xterm-mouse-mode t)' It works fine in GUI Emacs but terminal Emacs will report is undefined is undefined This is due to https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/mwheel.el?h=feature/pgtk&id=13a9a5e836cbe6e64aadaba40fe1f7eb83320d08#n53 which unconditionally maps the scroll events to `'wheel-up` and `'wheel-down` when `pgtk` is active. A quick fix would be something like $ emacs -nw -Q --load test.el with ;; test.el (unless window-system (xterm-mouse-mode t) (when (featurep 'pgtk) (setq mouse-wheel-down-event 'mouse-4) (setq mouse-wheel-up-event 'mouse-5) (global-set-key (kbd "") 'mwheel-scroll) (global-set-key (kbd "") 'mwheel-scroll))) Unfortuantely, it is not as simple because the user could have Emacs running as a daemon, connecting with both GUI and terminal clients in which case one of them won't work. In fact, using the above command to start a daemon and then connecting with a GUI client will cause `Bad binding in mwheel-scroll` upon scrolling. I tried fixing this by changing `mouse-wheel-(down|up)-event` in `focus-in-hook` depending on the `(window-system (selected-frame))` but this crashes Emacs with segmentation fault upon switching between frames. ;; test.el (when (featurep 'pgtk) (add-hook 'focus-in-hook (lambda () (if (window-system (selected-frame)) (setq mouse-wheel-down-event 'mouse-4 mouse-wheel-up-event 'mouse-5) (setq mouse-wheel-down-event 'wheel-up mouse-wheel-up-event 'wheel-down))))) (unless window-system (xterm-mouse-mode t) (when (featurep 'pgtk) (setq mouse-wheel-down-event 'mouse-4) (setq mouse-wheel-up-event 'mouse-5) (global-set-key (kbd "") 'mwheel-scroll) (global-set-key (kbd "") 'mwheel-scroll) (global-set-key (kbd "") 'mouse-wheel-text-scale) (global-set-key (kbd "") 'mouse-wheel-text-scale) (global-set-key (kbd "") 'mwheel-scroll) (global-set-key (kbd "") 'mwheel-scroll))) Related thread on Emacs Stack Exchange: https://emacs.stackexchange.com/questions/64935/mwheel-scroll-bindings-between-gui-and-terminal ;;=================== In GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.27, cairo version 1.16.0) Repository revision: 74d017edb6717ad76d38edc02ad3210d4ad66b96 Repository branch: nixos-21.05 Windowing system distributor 'System Description: NixOS 21.05 (Okapi) Configured using: 'configure --prefix=/nix/store/p2yxdx48mqgvaflygysqz5b7p7q2bbpw-emacs-pgtkgcc-20210725.0 --disable-build-details --with-modules --with-x-toolkit=gtk3 --with-cairo --with-native-compilation --with-pgtk' Configured features: CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PGTK PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS XIM GTK3 ZLIB Important settings: value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix