Re: emacs rendering comparisson between emacs23 and emacs26.3

[Eli Zaretskii]

> Date: Sun, 5 Apr 2020 19:57:53 +0000
> From: Alan Mackenzie <address@hidden>
> Cc: martin rudalics <address@hidden>, Eli Zaretskii <address@hidden>,
>  address@hidden, address@hidden, address@hidden
> 
> Try this:
> 
> diff --git a/src/window.c b/src/window.c
> index 8cdad27b66..b23ae41aba 100644
> --- a/src/window.c
> +++ b/src/window.c
> @@ -5475,7 +5475,9 @@ window_scroll (Lisp_Object window, EMACS_INT n, bool 
> whole, bool noerror)
>  
>    wset_redisplay (XWINDOW (window));
>  
> -  if (whole && Vfast_but_imprecise_scrolling)
> +  if (Vfast_but_imprecise_scrolling
> +      && (whole
> +          || EQ (Vthis_command, Qmwheel_scroll)))
>      specbind (Qfontification_functions, Qnil);

That's just to make a point, no?  You don't seriously propose such a
change, right?