From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#68081: 30.0.50; derived-mode and display-buffer-alist Date: Fri, 29 Dec 2023 13:41:36 +0200 Message-ID: <83v88h5j7z.fsf@gnu.org> References: <83r0j6774p.fsf@gnu.org> <342c493e-b0ba-40a8-8023-58a9bb04abd6@gmx.at> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="10179"; mail-complaints-to="usenet@ciao.gmane.io" Cc: germanp82@hotmail.com, 68081@debbugs.gnu.org To: martin rudalics Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Dec 29 12:42:28 2023 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 1rJBG0-0002RC-LD for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 29 Dec 2023 12:42:28 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rJBFc-0002NF-Ju; Fri, 29 Dec 2023 06:42:04 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rJBFa-0002N2-I7 for bug-gnu-emacs@gnu.org; Fri, 29 Dec 2023 06:42:02 -0500 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rJBFa-00021L-A2 for bug-gnu-emacs@gnu.org; Fri, 29 Dec 2023 06:42:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1rJBFZ-00072o-NF for bug-gnu-emacs@gnu.org; Fri, 29 Dec 2023 06:42:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 29 Dec 2023 11:42:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 68081 X-GNU-PR-Package: emacs Original-Received: via spool by 68081-submit@debbugs.gnu.org id=B68081.170385011727068 (code B ref 68081); Fri, 29 Dec 2023 11:42:01 +0000 Original-Received: (at 68081) by debbugs.gnu.org; 29 Dec 2023 11:41:57 +0000 Original-Received: from localhost ([127.0.0.1]:40829 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rJBFU-00072V-Tm for submit@debbugs.gnu.org; Fri, 29 Dec 2023 06:41:57 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51002) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rJBFR-00072F-VV for 68081@debbugs.gnu.org; Fri, 29 Dec 2023 06:41:54 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rJBFL-00020C-Jb; Fri, 29 Dec 2023 06:41:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=jrFS8qegZoTCrMd9l1krlGmCs9R6KmDr9aMiGHZJsz8=; b=d638/kX9U2b2 VmRXQuU7EkOvzRebxyQ4EKoVaXdu50pWYWd7rb0Qdh0dgza6Uf6lWkDyHjyvvDO2OsjLyzG798DAc 3bgF8kqr9uEi9yJOUJs9ZtcGZ5vuuWb1poKsNWEYtWfPqaZgGRlJKHNjEOk24ddDf8rkesGG9Izjx miPHaZS4moxq+41kjKEhEflsCJNow49R91Lk9+LeccD1PojhEH1LuQ5t7Ih/evAUbGgn2XKpm7Syu ELP0dPm3k3Qg3Kkfpnwyd9doE5bnqW14OhuhJRFVmTnB+oyt4sBYq0aJ+HaV8vcwxge8u8epstfBj nLw9EJavx1fKSoUUeO5KkA==; In-Reply-To: <342c493e-b0ba-40a8-8023-58a9bb04abd6@gmx.at> (message from martin rudalics on Fri, 29 Dec 2023 10:02:50 +0100) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:277009 Archived-At: > Date: Fri, 29 Dec 2023 10:02:50 +0100 > Cc: 68081@debbugs.gnu.org > From: martin rudalics > > >> display-buffer-alist rules that use derived-mode or major-mode are > >> ignored on first use. > >> > >> emacs -Q: > >> > >> (setq display-buffer-alist '(((derived-mode . Info-mode) > >> (display-buffer-in-side-window)))) > >> "C-h i" > >> The info buffer takes the whole window > >> "q" > >> "C-h i" > >> The info buffer opens in side window as expected > >> > >> Info and Compilation modes are affected, but Help and Man work as expected > > > > Martin, any comments or suggestions? > > C-h i does > > (info-setup file-or-node > (pop-to-buffer-same-window (or buffer "*info*")))) > > In the first call BUFFER is nil and the > > (provided-mode-derived-p > (buffer-local-value 'major-mode buffer) > mode)) > > rigmarole in 'buffer-match-p' won't report a match because the major > mode of *info* is still fundamental mode. In later calls the *info* > buffer exists already, is in Info-mode, and 'buffer-match-p' will > produce the desired result. > > We could try to call 'Info-mode' _before_ calling 'display-buffer' but > I'm not sure of the consequences this would have. Thanks. I tend to document this subtlety, and otherwise leave it alone.