patch 8.2.2640: screenstring() returns non-existing composing characters Commit: https://github.com/vim/vim/commit/f1387285e2ebe5cb3688d729fc6fd01a169a76c1 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 22 17:11:15 2021 +0100 patch 8.2.2640: screenstring() returns non-existing composing characters Problem: screenstring() returns non-existing composing characters. Solution: Only use composing characters if there is a base character.

#!/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