bug#29690: emacs Jammed by select the whole buffer with 26000 lines file

[Eli Zaretskii <eliz@gnu.org>]

Please always CC the bug address.

> From: Pythonora Nybon <bmsac0001@gmail.com>
> Date: Thu, 14 Dec 2017 20:05:09 +0800
> 
> I'm sorry for simple describing this issue for confusing your reproducing operation. 
> And this issue was so simple that:
> 
> 1. the operation system environment was the code up of my first post. And this issue
> what I was found there's one exit issue like here that are : 
> http://emacs.1067599.n8.nabble.com/bug-13486-24-2-92-large-X-selections-timed-out-waiting-for-property-notify-event-td275798.html
> 
> 
> 2. When I one plain text like the example like I give you whether it be org file or non 
> backends file . Now I all turn them to fundamental-mode to reproduce this issue.
> 
> 3. selecting the whole buffer and emamcs-gui will stuck for long time until I kill it's processing.
> 
> 4. This bug was just appear on the emacs-gui,and also on windows platform but without died.
> 
> 5. And I can set the variable 'select-active-buffer' to '(quote only)' or nill to let selecting operation 
> not be stuck as well , but there's also be stuck after cut or delete the selected region.
> 
> You can see the old issue link that I give you to of this post to see this issue have a very long 
> time since emacs-gui 24 version and can be checked out in emacs 23.  This time 2017 I wouldn't
> want to use old emacs anymore with losing many new goods in the newest version even if it will be worked.
> 
> Thanks for replying me ,and with the greatest regard for waiting your solutions about this issue because I 
> really need emacs for working with some file large with 20'000 lines about my job.

I cannot reproduce this on my system.  Can someone else?