GNU bug report logs - #27647
26.0.50; Line numbers implemented natively disappear momentarily when frame out of focus

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Message #95 received at 27647 <at> debbugs.gnu.org (full text, mbox):

From: Romanos Skiadas <rom.skiad <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 27647 <at> debbugs.gnu.org, npostavs <at> users.sourceforge.net,
 jonaswestlund101 <at> gmail.com, kaushal.modi <at> gmail.com
Subject: Re: bug#27647: 26.0.50; Line numbers implemented natively disappear
 momentarily when frame out of focus
Date: Sun, 15 Oct 2017 16:05:37 +0100

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On 14/10/17 08:47, Eli Zaretskii wrote:
>> Cc: kaushal.modi <at> gmail.com, 27647 <at> debbugs.gnu.org,
>>   jonaswestlund101 <at> gmail.com, npostavs <at> users.sourceforge.net
>> From: Romanos Skiadas <rom.skiad <at> gmail.com>
>> Date: Fri, 13 Oct 2017 19:14:10 +0100
>>
>>>> It is indeed a GTK3 build and setting x-gtk-use-system-tooltips to nil does indeed make this problem go away.
>>> What about disabling scroll-bar-mode, while leaving the GTK tooltips
>>> in use -- does that also make the problem go away?
>>>
>>> Thanks.
>> Just checked, still shows up with scroll-bar-mode disabled and the
>> tooltips in use.
> What if you turn on display-line-numbers globally -- does the problem
> persist in that case with your default settings for GTK tooltips?

Nope, still a problem with this init file:
(global-display-line-numbers-mode)
(add-to-list 'load-path "~/Code/evil")
(require 'evil)
(evil-mode 1)
(add-hook 'text-mode-hook 'flyspell-mode) ;; don't have to create the 
overlay manually

$ emacs -Q -l /txt/config.el /tmp/foo.txt

I spent some time looking into evil and tracked the problem in these 
lines of the function that is bound to [mouse-1]:

https://github.com/emacs-evil/evil/blob/89ab1e2ae5e59140bab4f8509b9e4c336ba375ea/evil-commands.el#L4225
https://github.com/emacs-evil/evil/blob/89ab1e2ae5e59140bab4f8509b9e4c336ba375ea/evil-commands.el#L4245

They call this function that moves point and mark:
https://github.com/emacs-evil/evil/blob/89ab1e2ae5e59140bab4f8509b9e4c336ba375ea/evil-commands.el#L4304
which as the comment says is just a copy of 
mouse--drag-set-mark-and-point Is this in any way helpful?

I'm playing with the debugger now so I might have something more useful 
later.

Best,
Romanos

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