patch 9.0.1317: crash when using an unset object variable Commit: https://github.com/vim/vim/commit/552bdca781bd202012224316ffae3439aac83b7b Author: Bram Moolenaar <Bram@vim.org> Date: Fri Feb 17 21:08:50 2023 +0000 patch 9.0.1317: crash when using an unset object variable Problem: Crash when using an unset object variable. Solution: Give an error instead. (closes https://github.com/vim/vim/issues/12005)

#!/bin/bash
set -e

apt-get install -y xvfb

cat <<EOT >/etc/systemd/system/xvfb.service
[Unit]
Description=X Virtual Frame Buffer Service
After=network.target
[Service]
ExecStart=/usr/bin/Xvfb :99 -screen 0 1024x768x24
[Install]
WantedBy=multi-user.target
EOT

systemctl enable xvfb.service
systemctl start xvfb.service