On Thu, Dec 11, 2025 at 01:53:38AM +0100, Vincent Lefevre wrote: > Package: xterm > Version: 404-1 > Severity: important > > Display is corrupted when double-width characters are displayed. > In particular, this affects Mutt (receiving mail with such characters > is common), and one consequence is that wrong mail can be deleted > because the cursor does not appear on the right message! I've > attached a part of a screenshot (20251211-003112.png) to show > the kind of output I get. > > There is no such issue with rxvt and GNOME Terminal. > > To reproduce a display issue, open a 80-column xterm, and generate > output so that the shell prompt is at the very bottom. Then paste > the following command: > > printf "🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝🧝\n" > > The last 3 characters of the command (\n") do not appear (see attached > screenshot 20251211-014531.png). They appear one character at a time > when I type the left arrow. There is the same issue when I recall this > command from the history (if the prompt is at the very bottom).
I can see some cursor-misplacement, using bash and zsh, not dash, when pasting that text without a line-ending (so that the cursor would be at the end of the line). fwiw, all of the characters are U+1F9DD, which we're agreed should be two cells, and the VS15/VS16 code shouldn't be a factor. I'll have to bisect my changes to see why this happens. -- Thomas E. Dickey <[email protected]> https://invisible-island.net
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