bug#29664: 26.0.90; Auto Hscroll Mode + Visual Line Mode + Truncate don't work well together

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Kaushal Modi <kaushal.modi@gmail.com>,  29664@debbugs.gnu.org
> Date: Fri, 03 Sep 2021 08:36:50 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> `visual-line-mode' disables `truncate-lines', so for symmetry, I think
> `toggle-truncate-lines' can disable `visual-line-mode' (and say that
> it's doing so).  So I've done that on the trunk now.

But if the user turns on truncate-lines by changing the variable
manually, visual-line-mode will still stay turned on, right?  Isn't
that a problem?

Also, what about truncate-partial-width-windows?