Re: Display updates strangely - extra text appears and then disappears

[Eli Zaretskii]

> From: address@hidden (Adam Sjøgren)
> Date: Sun, 26 Mar 2017 18:54:51 +0200
> 
> Eli writes:
> 
> > Thanks.  I followed the recipe, but my display is not messed up as you
> > describe.
> 
> I guess our environments differs in some aspect. Is there anything I
> should check?

I have no idea what could be responsible for the differences in
behavior.

> > Could you perhaps try the recipe after disabling double-buffering,
> > like this:
> >
> >   M-: (modify-frame-parameters nil '((inhibit-double-buffering . t))) RET
> >
> > If you repeat the recipe after evaluating the above, does the problem
> > still appear?
> 
> The problem still appears after doing that.

OK.

> I just found a simpler recipe to reproduce the problem:
> 
>  * Start emacs -Q
>  * Split the window in two: C-x 2
>  * Unsplit it: C-x 1
> 
> The text in the *scratch* buffer is repeated after where the line should
> end:
> 
>  · https://koldfront.dk/misc/gnu-emacs/redisplay-simple.png

Doesn't happen here, either.

I need to test an alternative solution for the bug whose fix seems to
be causing this.