bug#57728: 29.0.50; Emacs writes wrong glyph at the bottom-right corner of text terminals

[Andreas Schwab]

On Sep 12 2022, Eli Zaretskii wrote:

> But AFAIU, the bug actually shows that we somehow _do_ write there,
> although the display engine assumes we don't.  Right?

I think it is the other way round.  The display engine doesn't know that
sometimes the last character isn't written, and thus does not bother to
redraw it if the bottom line is scrolled up.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."