From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.bugs Subject: bug#46908: 28.0.50; Dozens of spurious markers in buffer-undo-list Date: Tue, 09 Mar 2021 03:04:14 +0100 Message-ID: <87k0qh9j6p.fsf@web.de> References: <87o8fzn9fa.fsf@web.de> <0ca78c1b-7737-8a87-9edc-deaa551677fa@gmx.at> <87wnumswhr.fsf@web.de> <6ccba248-7643-280a-4560-88872fb08457@gmx.at> <87sg5asr6k.fsf@web.de> <7b04f87b-8d7a-e151-5b4a-d77bd6ea1506@gmx.at> <87y2f1m7ez.fsf@web.de> <87mtve2t2q.fsf@web.de> <5e12eae1-94fd-d2c7-923d-f4dbabf3da52@gmx.at> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3229"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 46908@debbugs.gnu.org, Yuan Fu To: martin rudalics Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Mar 09 03:05:38 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 1lJRkg-0000ja-6e for geb-bug-gnu-emacs@m.gmane-mx.org; 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Tue, 09 Mar 2021 03:04:15 +0100 In-Reply-To: <5e12eae1-94fd-d2c7-923d-f4dbabf3da52@gmx.at> (martin rudalics's message of "Mon, 8 Mar 2021 09:26:42 +0100") X-Provags-ID: V03:K1:ulKEd0W+tuljOWCFGYxGv67Bof0WVyUYd/utYMsL3KGUTED721/ v1Lcv27Vtkr0sjXg6eeYDNNtomhnFZPpzI3dM2R2XGJQp4YC42SWfJSHCZui7rfoEK2g3u5 jewIlxvXfjd8vqCsYhwMgem049KubeXP8rSiditz10UEhO4I6q0SYSw5in905jJNUBV5rQU Udf+sK7gLjp+NRMQ4xl/w== X-UI-Out-Filterresults: notjunk:1;V03:K0:y0tBEAuEdaM=:tw8QitUneuo0xpJNXwv4LC 3mAi5EQzWDRkxcFZZV5Wh8cIGJAOolswNZ3dRbEZVmJUlC6ZqYaQUmgyyG74PfXmsz5xRhq0r WIZ9dtE+fMgMbWQMrlKG9zh2/u/FMXLfgLBONbVct0ixviLILSuAnyPZ2ksz9aAtcOTuQb9cu 3g6SuXHxpxFS3+z2Mvg086iZMKXm3KDFa1UnxCZ8J3Xr3YMDOR6hZSQ8QjArfw3CxqAWFdtNx D7Ih3u3pk3NEdhCXBxMR3Gq+l+nxLW/ifIPGzVRfuetx+hv15AuP7TsACyZNY8+J7HV0UIPRR Ti6Yl/TXR4AslIGZaYIuy6Uz54viL6Ri24JsqoOoguKbAZ3IHOsiYmgJgucRRYK/UerbmH79I SED4dVYRjL9FzlYgqdQwY+Y+9iOZBsNVr2iJQ9ZC9MNQ48369lAfEQcAAa9rJGhHC3y1iwcwD JG4q1PMI290PxE6gODOhdSbM8i2Q0xGUhB5WWpfuTesIl148CJK57a0v1fHiGZejqytWwLVh6 CUk2QMW2tYh/QRBj2MA2UT9DVf48GMq7dtshVIHqPcjML0KmY/E1gbgwGAkPioEOIH6Bd6Fwx RAxw3DRLp17bPU2Dfv5Wtw5wLBiVMgh59inB4IvFbpR/m827B+kcTreB9NXg8OewogG2yvNkE 85FjJrvtbb0bK8aHgBm0/4FMBHPzA4sOIjjfmAw15wuCvD66sOG4qq67+I2iwdNmO1Y97kIjK z0mjNI/p5MYuis4AoGigJoulMJKdzNBsD+fpFgwd23xfT07LV5eQcGk4AYuuF5gMnSrfI215 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:201891 Archived-At: martin rudalics writes: > So you mean that we really have two problems here, both caused by > `push-mark'? IIUC a marker is "thrown out of the rings" when its buffer > gets deleted or a marker is pushed on a "full" ring. I suppose that > "invalidating" markers in these cases should be safe. But actually that doesn't help, markers pointing to nowhere are not removed from buffer-undo-list by garbage-collect. > But how comes that `add-to-history' affects `buffer-undo-list'? `add-to-history' has no relevance here, no. There mere existence of a marker in any buffer does, IIUC, cause it to be referenced by buffer-undo-list sooner or later, because undoing and redoing inside text containing a marker is not always without ambiguity regarding marker positioning, so the undo system adds hints to buffer-undo-list how these markers must be placed/repositioned. Michael.