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

From: Andreas Schwab <[email-masked]>
Date: Mon, 12 Sep 2022 14:20:41 +0200

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.

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Andreas Schwab, SUSE Labs, [email-masked]
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