Job status message erased when using multiline prompt

[zanchey]

Discussed in #8742

^{Originally posted by lacygoill February 23, 2022}
Consider this minimal prompt:

function fish_prompt
    printf '\n$ '
end

Written in /tmp/home/.config/fish/config.fish.

Start fish like this:

$ XDG_CONFIG_HOME=/tmp/home/.config fish

Finally, start a job:

$ sleep 1 &

When the job terminates, it writes a message on the terminal:

$ fish: Job 1, 'sleep 1 &' has ended

But most of the time, this message is automatically cleared (maybe 5 out of 6 times):

The issue disappears if the newline is removed from the prompt.

Is there a way to prevent the message from being cleared?

I think this is another bug in multiline prompt handling.

[ridiculousfish]

Hunh, doesn't repro on iTerm2 or Terminal app, looks to be terminal specific.

[lacygoill]

On Ubuntu 20.04, I can reproduce in:

• GNOME Terminal 3.36.2 using VTE 0.60.3 +BIDI +GNUTLS +ICU +SYSTEMD
• kitty 0.24.4
• st 0.8.4
• xfce4-terminal 0.8.9.1 (Xfce 4.14)
• XTerm(353)

[zanchey]

I can't reproduce on Terminal.app when fish is running locally on macOS, but I can with mosh to a Linux session.

[krobelus]

fixed with 32ed0b8, thanks for reporting. Sadly the behavior is still flaky but it's just an occasional extra blank line.