From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#51577: 27.2; Regression: reproducible hang with face functions Date: Thu, 04 Nov 2021 23:56:16 +0100 Message-ID: <87a6ijpm27.fsf@gnus.org> References: <83tugtgo6z.fsf@gnu.org> <83a6ilgh37.fsf@gnu.org> <87bl2zss78.fsf_-_@gnus.org> <83y263eod4.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="22146"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 51577@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Nov 04 23:57:12 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 1milfS-0005SB-V1 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [84.212.220.105] (helo=elva) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1milea-0007Fy-QI; Thu, 04 Nov 2021 23:56:19 +0100 Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAD1BMVEUqJCC8iUK3r6zp 4tv///9tovfAAAAAAWJLR0QEj2jZUQAAAAd0SU1FB+ULBBYvGoU6mAIAAAG4SURBVDjLdZQNcsQg CIUxuYCYCyhcoIH736081DTbaZ3Z7ZTPx8/Dluh1Ss0fB/X45r8PUf2QxKeHYoT2Axw7FcDRpIv0 jJQ+dT3u1/NWcTHEF0c6DgXXWriGWALIAo0iEofovA9xl5aqCWZ7ZxcFKCblAQVAQmDWCckGaqxO uZnHGZW5zuILtMPUzY3vy2a7Ky6XQBGd+V1gSE3nqjpqu/bCTQZFn1zSSbUEbhGoCS544De3jLuU VmFZKFAAIOOu46qU3ta1k+YmCQpdN01QmiimQzI5uKjNrsRfx3iwhoKJXc1kQ3O2tVsWCy9Yt2QM ZhkAjAHGK5+wx+boymZun4Y8GZ2aJuCMhTGTCRSazTxFci+xxmtqn3iKAKZHP0BMsDEOYLXBdFyM +xpG6wIiZXkOaS3hp7WoEQBnZ5S4pPICq09dC0bxBWb9uGaYPjZ4+hvkIBJrb/X0mU2fpo2gyJuT 7ELWAPJ5yAb4JQbwO7qSz6OpH/DqF5EH7Bp/ABv4O1uxN7jxHNf4hjHQ1XwClM8rpta54V3D8ymh J3Qv/ihyuV/bl1eqJNtjS9B+XufqNuP833+f9g3+sogCuMgKmwAAACV0RVh0ZGF0ZTpjcmVhdGUA MjAyMS0xMS0wNFQyMjo0NzoyNiswMDowMI/C3vEAAAAldEVYdGRhdGU6bW9kaWZ5ADIwMjEtMTEt MDRUMjI6NDc6MjYrMDA6MDD+n2ZNAAAAAElFTkSuQmCC X-Now-Playing: Ben Neill's _Automotive_: "Bugfunk" In-Reply-To: <83y263eod4.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 04 Nov 2021 21:01:59 +0200") 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:218952 Archived-At: Eli Zaretskii writes: > Detecting loops in those cases would require recording face > specs/names we already saw in some list, and each time we get an > :inherit attribute, check if its value is already in the list. Is > that worth our while, if the result will be a silent error message in > *Messages*? Well, the result is that Emacs doesn't hang. :-) I'm not so worried about issuing any messages here. But I wonder -- could we do this (expensive) checking in defface (or rather custom-declare-face)? That could be helpful -- evalling a circular face definition should signal an error. Do we have all the information needed to see whether we have a circular definition at that point? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no