patch 9.0.0790: test for dummy buffer does not always produce the E86 error Commit: https://github.com/vim/vim/commit/53c5c9f50ca68d3ed559eebb2c5f7d23f39a768c Author: Bram Moolenaar <Bram@vim.org> Date: Tue Oct 18 17:25:03 2022 +0100 patch 9.0.0790: test for dummy buffer does not always produce the E86 error Problem: Test for dummy buffer does not always produce the E86 error. Solution: Do not check if the error is produced.

#!/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