From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.bugs Subject: bug#33005: 27.0.50; Data loss with Gnus registry Date: Thu, 28 Nov 2019 08:43:29 +0000 Message-ID: <87sgm8tmq6.fsf@ericabrahamsen.net> References: <871s8yvsrq.fsf@web.de> <87k17nwkxi.fsf@web.de> <8736ebxxwa.fsf@ericabrahamsen.net> <87k17m1tv0.fsf@web.de> <87pnhev5n4.fsf@ericabrahamsen.net> <87sgma1ju2.fsf@web.de> <87imn6v01s.fsf@web.de> <87eexuuznq.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="157729"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: 33005@debbugs.gnu.org To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Nov 28 09:44:26 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iaFPV-000ev8-TN for geb-bug-gnu-emacs@m.gmane.org; Thu, 28 Nov 2019 09:44:26 +0100 Original-Received: from localhost ([::1]:46558 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iaFPU-0002lx-OD for geb-bug-gnu-emacs@m.gmane.org; Thu, 28 Nov 2019 03:44:24 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52624) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iaFPA-0002l7-1j for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 03:44:05 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iaFP8-0008Ev-PL for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 03:44:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:50628) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iaFP8-0008EA-Iv for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 03:44:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iaFP8-00035h-Fi for bug-gnu-emacs@gnu.org; Thu, 28 Nov 2019 03:44:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eric Abrahamsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 28 Nov 2019 08:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 33005 X-GNU-PR-Package: emacs Original-Received: via spool by 33005-submit@debbugs.gnu.org id=B33005.157493061811845 (code B ref 33005); Thu, 28 Nov 2019 08:44:02 +0000 Original-Received: (at 33005) by debbugs.gnu.org; 28 Nov 2019 08:43:38 +0000 Original-Received: from localhost ([127.0.0.1]:56601 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iaFOk-00034y-3n for submit@debbugs.gnu.org; Thu, 28 Nov 2019 03:43:38 -0500 Original-Received: from ericabrahamsen.net ([52.70.2.18]:48364 helo=mail.ericabrahamsen.net) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iaFOi-00034l-IW for 33005@debbugs.gnu.org; Thu, 28 Nov 2019 03:43:37 -0500 Original-Received: from localhost (unknown [94.11.255.11]) (Authenticated sender: eric@ericabrahamsen.net) by mail.ericabrahamsen.net (Postfix) with ESMTPSA id 75906FA086; Thu, 28 Nov 2019 08:43:30 +0000 (UTC) In-Reply-To: <87eexuuznq.fsf@web.de> (Michael Heerdegen's message of "Tue, 26 Nov 2019 21:54:17 +0100") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:172585 Archived-At: On 11/26/19 21:54 PM, Michael Heerdegen wrote: > Eric Abrahamsen writes: > >> I wonder, too, now that I look at the code. I will let you know in 15 >> hours, when I arrive in London :) Okay, I mostly slept on the plane. But... One missing piece of the puzzle: the Gnus startup process runs `gnus-clear-system', which runs `gnus-shutdown', and the registry has a shutdown routine that sets `gnus-registry-db' to nil. Starting up Gnus essentially first shuts it down. But that still doesn't completely explain why this works. Say a user starts Gnus cold, and only loads gnus-registry.el via an autoloaded call to `gnus-registry-initialize' in the init file. The shutdowns run before the init file is loaded, meaning gnus-registry.el hasn't been loaded, meaning it hasn't had a chance to add its registry-related shutdown yet. So we should still be loading the registry with an already-initialized `gnus-registry-db', and overwriting the user's existing data. Obviously the code as it stands should be changed: either I should find another way of preventing double loading, or the defvar shouldn't initialize the database to anything (I prefer this latter). But it's still a mystery to me... Eric