It would be great if tokens would work for RemoteForward keyword so one could use them to define "dynamically" unix socket paths, for example when running borg backup sw via unix sockets.

Example:

---%>---
Host *.example.com
  User backup
  Compression no
  Ciphers aes128-ctr
  MACs umac-64-etm@openssh.com
  IdentitiesOnly yes
  IdentityFile ~/.ssh/id_ed25519.%r%-example.com
  ExitOnForwardFailure yes
  StreamLocalBindUnlink yes
  RemoteForward /home/%r/tmp/borg.sock ~/tmp/%h-borg.sock # here!
  PermitLocalCommand yes
  LocalCommand socat UNIX-LISTEN:$HOME/tmp/%h-borg.sock "EXEC:borg serve --append-only --restrict-to-path /borgbackup/example.com/%h --umask 0007 --verbose" &
---%<---

And ssh command...

---%>---
export BACKUP_CLIENT=foo.example.com
export BACKUP_DOMAIN=$(echo ${BACKUP_CLIENT} | rev | cut -d'.' -f1-2 | rev)
ssh -q ${BACKUP_CLIENT} "./bin/borgwrapper create --list -s --exclude-caches ssh://localhost/borgbackup/${BACKUP_DOMAIN}/${BACKUP_CLIENT}::'{now:%Y-%m-%dT%H:%M:%S}' /" ; pkill -f "socat .*${BACKUP_CLIENT}"
---%<---