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#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely Date: Wed, 14 Sep 2022 19:25:49 +0200 Message-ID: <8735ct6f6q.fsf@gnus.org> References: <87pmfx6h7y.fsf@gnus.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="38083"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 57804@debbugs.gnu.org To: Paul Pogonyshev Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 14 19:37:56 2022 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 1oYWKi-0009gr-1T for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [84.212.220.105] (helo=joga) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oYW90-0000Jl-5l; Wed, 14 Sep 2022 19:25:52 +0200 In-Reply-To: (Paul Pogonyshev's message of "Wed, 14 Sep 2022 18:57:23 +0200") Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAALVBMVEXu7u3Y0NfGoK/P NkTdV2e3rsuZeYdLOkUTBw9kV14nEhlLJio2IiosGiP////Zf5E1AAAAAWJLR0QOb70wTwAAAAd0 SU1FB+YJDhEYCHAinlEAAAGOSURBVDjLrdK9TsJQFAfwYuJOE0kMkcHi4iq+AKUvwEA0xBV4Az4S WeV4oaNCBRcXLhe7Yk2ZhVSZ+xH6LrYF1J7WxMH/eH+959xzeznuKzz330nyPJ8Mr2Rzu5xtlxKC kD+RxKzkJ3cuSTvYE0VRkIRsTioUQju2OZB2yf/xPIlU9ZjfJAz7NbgpBSkiOJ0+xUPfaFXiIKUs G9/wY/pU8aESX6o0qsSXKtUqA9tbr96F4aLfrw5pS2nDbRjKzKR2GwAIgittDJN5DJTpmKrUA1zq EkyHAIlC2V3QWDj6WPt1SBRc1weg0R0r73tCZQwZdwlkOKXgIDhULZnN3y2QEaQpdHVdN2J6LLtz XVcdhnuoBmGMMAtDmvjDgRPZkWZTzYOXXhTWj8DgTXUjwEYe2E0jCg2v1HNzjU/F4BpkCosOBkJW /t3OiMmF3lWGBceFWdPGpZh35xQmA9wcZOIPYtcioAalVKWDwSLBr62bGOgGXhuoOQSPCmCi/ALd ezygBsw3gqGnseBhkTrHfQIpVOojvKi+iAAAACV0RVh0ZGF0ZTpjcmVhdGUAMjAyMi0wOS0xNFQx NzoyNDowOCswMDowMC0MBZkAAAAldEVYdGRhdGU6bW9kaWZ5ADIwMjItMDktMTRUMTc6MjQ6MDgr MDA6MDBcUb0lAAAAAElFTkSuQmCC X-Now-Playing: Anne Clark's _Hopeless Cases_: "Homecoming" 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:242493 Archived-At: Paul Pogonyshev writes: >> For instance, if the user hits `C-g' three times (and Emacs doesn't idle >> in between), then we disable font-lock in that buffer. > > That sounds much better. I know that `C-g' is what to press when Emacs > is stuck. A single `C-g' wouldn't be quite the right thing, because the user may hit `C-g' by accident while font-lock happens to run (and it's not hanging), which is why I though a special key sequence like `C-g C-g C-g' might make sense. >> There's also `max-redisplay-ticks' -- but I'm not sure that would have >> helped here? > > If I add `(setf max-redisplay-ticks 100)' right after entering > `buggy-mode', it seems to have some effect, but not exactly what I'd > hope on. I suggest you try and see for yourself, hard to describe > them. Doesn't seem to have any effect here...