patch 8.2.2474: using freed memory when window is closed by autocommand Commit: https://github.com/vim/vim/commit/2c7080bf1ceef4a7779644fd428b2386a0676794 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 6 19:19:42 2021 +0100 patch 8.2.2474: using freed memory when window is closed by autocommand Problem: Using freed memory when window is closed by autocommand. (houyunsong) Solution: Check the window pointer is still valid.

#!/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