From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Any downside to condition-case-unless-debug? Date: Thu, 27 May 2021 19:22:10 -0400 Message-ID: References: <87pmxcw2rl.fsf@ericabrahamsen.net> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18053"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: Eric Abrahamsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri May 28 01:23:05 2021 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 1lmPLE-0004Tn-1y for ged-emacs-devel@m.gmane-mx.org; Fri, 28 May 2021 01:23:04 +0200 Original-Received: from localhost ([::1]:44174 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lmPLD-0002ZB-4x for ged-emacs-devel@m.gmane-mx.org; Thu, 27 May 2021 19:23:03 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40422) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lmPKS-0001nM-MC for emacs-devel@gnu.org; Thu, 27 May 2021 19:22:16 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:5834) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lmPKQ-0003AJ-1c for emacs-devel@gnu.org; Thu, 27 May 2021 19:22:15 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id CB2591001FB; Thu, 27 May 2021 19:22:12 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 458CC10008C; Thu, 27 May 2021 19:22:11 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1622157731; bh=46GZ+Z+JVIl/FsRoLYF3Ul/KHu7AJGZqjhYd5Atmjco=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=mFkucY33+7YdkDsy+gkyVVwd5XhlDZ04nLmnWXLzVw9BygfB1HL/KbCJJRG4/bkwe nlJFCzDmVMdQy+5HQ59RecUedtWUC0vaDSTmriDUIQP1asYdU/KCx0kBu5bCG4GVQZ LjU9Fi2ejlugjFgnuSs17fhkp5VCr+6XKIyP2bvkDU+vtYLawzeN/xwcZ3Jo9NVoS9 oR21kCXqzxBdn0n2MAR47MGN4cH2qUoROG8OsQsA1zNJC6Eu8g7nN2DguVKuBdoKEB ggdhra2DYMmRpgAlJALBtQQhqXS8S6/eMykzTzj7yIDEEQNO3g5gti4TBcgWZAaN0V nXQSKWYnEoyDw== Original-Received: from alfajor (69-196-163-239.dsl.teksavvy.com [69.196.163.239]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 15AAD1202DB; Thu, 27 May 2021 19:22:11 -0400 (EDT) In-Reply-To: <87pmxcw2rl.fsf@ericabrahamsen.net> (Eric Abrahamsen's message of "Thu, 27 May 2021 09:38:22 -0700") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.devel:269969 Archived-At: > I feel like a lot of my debugging recently has involved various ways of > working around `condition-case' and its swallowing of useful error > information. Is there any reason not to prefer > `condition-case-unless-debug' in new code? IME, `condition-case-unless-debug' is used/useful mostly for `condition-case` that catch "any error", most of which might be better served by something like `with-demoted-errors`. For those `condition-case` which catch one particular kind of error to handle a particular expected situation (e.g. when catching `scan-error` around a call to `forward-sexp`), `condition-case-unless-debug` rarely makes sense. Stefan