From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Max Nikulin Newsgroups: gmane.emacs.devel Subject: How to get DISPLAY of emacsclient? Date: Fri, 25 Nov 2022 22:17:54 +0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28796"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Nov 25 17:28:00 2022 Return-path: Envelope-to: ged-emacs-devel@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 1oybYV-0007HM-KL for ged-emacs-devel@m.gmane-mx.org; Fri, 25 Nov 2022 17:27:59 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oybY7-0001OI-Ah; Fri, 25 Nov 2022 11:27:35 -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 1oyaSv-0005d6-Jh for emacs-devel@gnu.org; Fri, 25 Nov 2022 10:18:09 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oyaSr-0003wA-07 for emacs-devel@gnu.org; Fri, 25 Nov 2022 10:18:06 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1oyaSl-0000GW-IJ for emacs-devel@gnu.org; Fri, 25 Nov 2022 16:17:59 +0100 X-Injected-Via-Gmane: http://gmane.org/ Content-Language: en-US Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: 28 X-Spam_score: 2.8 X-Spam_bar: ++ X-Spam_report: (2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FORGED_MUA_MOZILLA=2.309, FREEMAIL_FORGED_FROMDOMAIN=0.243, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NML_ADSP_CUSTOM_MED=0.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Fri, 25 Nov 2022 11:27:33 -0500 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:300493 Archived-At: Hi, Is it possible to get display of an emacsclient process? I mean either --display option argument or the DISPLAY environment variable namely for the client. Unfortunately the value of following expression is the DISPLAY environment of the server process emacsclient --eval '(getenv "DISPLAY")' I admit, it should work in most cases, but it is not robust: DISPLAY= emacs --daemon --display :0 causes empty string returned by `getenv'. In general, emacsclient's display is not necessary the same as the server's one. If I have got it correctly, the value is passed from client to server and there is a local "display" variable in server.el hidden from evaluated expression. The context of the question is the following. Org-capture allows to create notes in non-distracting way (by setting :immediate-finish t property of the capture template). The idea is to save text currently selected in some application (either PRIMARY or CLIPBOARD) using a global window manager shortcut invoking emacsclient --eval '(org-capture nil "x")' There is a pitfall. Emacs daemon has no frame at startup, so selection is inaccessible: emacsclient --eval "(org-get-x-clipboard 'PRIMARY)" returns nil (it is merely a convenient way to call `gui-get-selection'). A workaround is to call `server-select-display', but to do so it is necessary to know display. That is why I am asking how to obtain display of emacsclient.