Assert failure in headless mode when calling screenstring() after printing long message, redrawing, and printing multiline message #20999
Description
Neovim version (nvim -v)
NVIM v0.9.0-dev-279+gd187c00fa
Vim (not Nvim) behaves the same?
No
Operating system/version
Arch Linux
Terminal name/version
kitty 0.26.5
$TERM environment variable
xterm-kitty
Installation
build from repo
How to reproduce the issue
- This is the content of
/tmp/tmp.vim:
echo repeat('a', 100)
redraw
echo "\n"
call screenstring(1, 1)
quit- Run
nvim --clean --headless -S /tmp/tmp.vim
Expected behavior
No crash
Actual behavior
Assert failure after 1 second
void msg_scroll_flush(void): Assertion `to_scroll >= 0' failed.