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

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> Let me turn the table and ask you: why do you think that '\' is not
> the usual continuation glyph that Emacs always produces when the width
> of a screen line on a TTY frame is exceeded?

I think I finally understand what the reporter means.  To reproduce:

emacs -Q -nw
M-: and then enter enough text that you have ten lines of stuff in the
minibuffer.

It'll look like this:

So far so good.  Then C-p six-ish times and then C-n a few times:

Note that the continuation markers have gone missing from the last three
lines.