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bug#36680: 27.0.50; undo-tree visualizer flickering with display-buffer-

From: martin rudalics
Subject: bug#36680: 27.0.50; undo-tree visualizer flickering with display-buffer-reuse-frames -> t
Date: Fri, 19 Jul 2019 10:16:07 +0200

>> You probably should have used an 'inhibit-switch-frame' ALIST entry
>> then.
> Where would you suggest to do that, as a user, without changing code?
> Potentially any arbitrary buffer can be affected.

It's not trivial, unfortunately.  As a user, one has to identify the
calling undo-tree function.

>> OK.  Then please, try the attached patch.
> Yes, good, that's what I want - thanks.

I pushed the change now.

> I hope no existing code relies
> on the old behavior.  But I think it's an improvement, also in other
> situations.

Strictly speaking, the change should be in 'get-buffer-window-list' to
possibly pick a window before the selected one on the selected frame.
But I can't really change the semantics of that.

>> Note that when there's no suitable window on the selected frame you
>> will still get the annoying behavior.
> In this case it's not trivial what could be done better.  Let's say that
> this is not part of my report.

OK.  If you see no further problems, please close this bug.

Thanks, martin

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