From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Spencer Baugh Newsgroups: gmane.emacs.devel Subject: Re: unwind-protect within while-no-input Date: Wed, 08 May 2024 09:57:44 -0400 Organization: Jane Street Capital Message-ID: References: <86msp1a24a.fsf@gnu.org> <86jzk4a5ck.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19736"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: emacs-devel@gnu.org Cancel-Lock: sha1:gHsTIGcBEI4cCo5Jc/7Fbjsgsic= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed May 08 16:11:35 2024 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 1s4i17-00051U-IL for ged-emacs-devel@m.gmane-mx.org; Wed, 08 May 2024 16:11:33 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s4i0H-0000IJ-EU; Wed, 08 May 2024 10:10:41 -0400 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 1s4hnw-0003pj-Kc for emacs-devel@gnu.org; Wed, 08 May 2024 09:57:56 -0400 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 1s4hnv-0007HW-2k for emacs-devel@gnu.org; Wed, 08 May 2024 09:57:56 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1s4hnt-0000gN-4n for emacs-devel@gnu.org; Wed, 08 May 2024 15:57:53 +0200 X-Injected-Via-Gmane: http://gmane.org/ 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: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 08 May 2024 10:10:39 -0400 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:319008 Archived-At: Eli Zaretskii writes: >> From: Spencer Baugh >> Date: Tue, 07 May 2024 15:43:43 -0400 >> >> Eli Zaretskii writes: >> >> It seems like it's impossible right now to use unwind-protect robustly >> >> in face of quits, because a quit triggered in the body forms of the >> >> unwind-protect will also interrupt the unwind forms. >> > >> > I think you can use condition-case for that: >> > >> > (setq foo >> > (condition-case nil >> > (while t nil) >> > (quit 'interrupted))) C-M-x C-g >> > => interrupted >> >> That doesn't work with while-no-input: > > The message to which I responded said nothing about while-no-input, it > made a much more general and broad assertion, see above. 1. The unwind forms should run if there is a quit, no matter what triggered the quit. 2. One thing that might trigger a quit is a while-no-input form outside my code. 3. Therefore, the unwind forms should be run even when while-no-input triggers the quit. Your code does not run the unwind forms when run inside a while-no-input.