Re: Default behavior of C-l causes flickering on TTY frames

[Eli Zaretskii]

> From: Daniel Martín <mardani29@yahoo.es>
> Date: Sun, 12 Dec 2021 14:39:37 +0100
> 
> 
> When Emacs runs on a TTY console, the common operation of recentering
> the window with C-l causes some unpleasant screen flickering most of the
> time.  After some investigation, I see that this happens because the
> default value of the variable 'recenter-redisplay' is 'tty', which means
> that C-l clears and redisplays the screen.
> 
> Is there a reason Emacs still does that by default on TTY frames?

Yes, it's to redraw a potentially garbled TTY display.

> Is the possibility of the screen becoming garbled so common these
> days (on TTY frames) that we pay the price of a redisplay on each
> C-l?

Yes.

But why don't you customize that variable if you dislike the redraws
and OTOH don't have the problem with garbled displays?