From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#27647: 26.0.50; Line numbers implemented natively disappear momentarily when frame out of focus Date: Wed, 12 Jul 2017 17:44:26 +0300 Message-ID: <83eftliuk5.fsf@gnu.org> References: <83eftnitpj.fsf@gnu.org> <83bmorjba2.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1499870792 4240 195.159.176.226 (12 Jul 2017 14:46:32 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 12 Jul 2017 14:46:32 +0000 (UTC) Cc: 27647@debbugs.gnu.org To: Kaushal Modi Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Jul 12 16:46:26 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dVIuH-0000hQ-T9 for geb-bug-gnu-emacs@m.gmane.org; Wed, 12 Jul 2017 16:46:26 +0200 Original-Received: from localhost ([::1]:53890 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVIuL-0008EY-Rk for geb-bug-gnu-emacs@m.gmane.org; Wed, 12 Jul 2017 10:46:29 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35299) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVIt1-0007CF-1S for bug-gnu-emacs@gnu.org; Wed, 12 Jul 2017 10:45:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dVIsw-0008Gw-W2 for bug-gnu-emacs@gnu.org; Wed, 12 Jul 2017 10:45:07 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:32843) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dVIsw-0008Go-SV for bug-gnu-emacs@gnu.org; Wed, 12 Jul 2017 10:45:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1dVIsw-0005p3-MG for bug-gnu-emacs@gnu.org; Wed, 12 Jul 2017 10:45:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 12 Jul 2017 14:45:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 27647 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 27647-submit@debbugs.gnu.org id=B27647.149987068322335 (code B ref 27647); Wed, 12 Jul 2017 14:45:02 +0000 Original-Received: (at 27647) by debbugs.gnu.org; 12 Jul 2017 14:44:43 +0000 Original-Received: from localhost ([127.0.0.1]:35519 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dVIsc-0005oB-P4 for submit@debbugs.gnu.org; Wed, 12 Jul 2017 10:44:42 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:43882) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dVIsZ-0005nw-VF for 27647@debbugs.gnu.org; Wed, 12 Jul 2017 10:44:40 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dVIsQ-0007rZ-Q9 for 27647@debbugs.gnu.org; Wed, 12 Jul 2017 10:44:34 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:52679) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVIsQ-0007rS-MS; Wed, 12 Jul 2017 10:44:30 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:2688 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1dVIsP-0006RY-PX; Wed, 12 Jul 2017 10:44:30 -0400 In-reply-to: (message from Kaushal Modi on Tue, 11 Jul 2017 20:08:47 +0000) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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: 208.118.235.43 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:134460 Archived-At: > From: Kaushal Modi > Date: Tue, 11 Jul 2017 20:08:47 +0000 > Cc: 27647@debbugs.gnu.org > > This is what I see (I was able to record the moment when the lines reappeared on clicking anywhere in the > window): http://i.imgur.com/5C5FmGS.gifv > > When the above happened, the point was in a Fundamental Mode buffer window and the other window had > this file in emacs-lisp-mode. I do not have display-line-numbers set to t globally; so fundamental-mode has > that value at nil and the elisp window had that set to t. Again the line num disappearance happened when the > emacs frame was out of focus. > > Interestingly the variable watcher did not get triggered. I guess the variable gets changed by one of the ways that Lisp-level watchers cannot catch. > Does anything look problematic in the above code from a quick glance. Not at a glance. But the key to this mystery is most probably in your customizations. Some code which probably runs off a timer or some X event does something that directly or indirectly resets the variable in that buffer. Maybe you have some code which directly or indirectly calls kill-all-local-variables, for example. Or something else to that effect. You could add logging to your functions that turn off the line numbers, and see what's in the log when this happens.