bug#61667: 29.0.60; Failure to redisplay

[Dmitry Gutov]

On 26/02/2023 15:15, Gregory Heytings wrote:
> > > . "emacs -Q", then type 'a' (which visits a file?)
> > > . "emacs" with your configuration, then type "C-x b", which visits a 
> > > file
> > >
> > > In both cases, you see a delay before the display is updated, right?
> >
> > About 1 in 5-10 tries the delay is high enough to be noticeable 
> > (200-300ms with -Q and up to 1-2 seconds with my config).
>
> What happens if instead of your recipe you use these ones
>
> emacs -Q --eval "(tool-bar-mode -1)" --eval "(menu-bar-mode -1)" --eval 
> "(scroll-bar-mode -1)" --eval "(global-set-key \"a\" (lambda () 
> (interactive) (message "a pressed!") (find-file \"test.c\")))"
>
> emacs -Q --eval "(tool-bar-mode -1)" --eval "(menu-bar-mode -1)" --eval 
> "(scroll-bar-mode -1)" --eval "(global-set-key \"a\" (lambda () 
> (interactive) (find-file \"test.c\") (message "file loaded!")))"
>
> ?

Both of these make the problem go away, too.