Subject: Re: bug#44983: Truncate long lines of grep output

From: Eli Zaretskii <[email-masked]>
Date: Tue, 01 Dec 2020 20:26:59 +0200

> From: Andreas Schwab <[email-masked]>
> Cc: Dmitry Gutov <[email-masked]>,  [email-masked],  [email-masked]
> Date: Tue, 01 Dec 2020 17:46:33 +0100
> 
> > Not necessarily, because the truncated parts are still in the buffer,
> > and the display code which is slow in that case basically moves
> > through the buffer one character at a time in many cases.  Only some
> > specific scenarios (read: a small number of commands) can jump to the
> > next physical line disregarding the truncated parts.
> 
> But moving though the buffer is much faster than rendering it.

I meant moving in the likes of move_it_to.  These simulate display, so
they are almost as slow as rendering itself.