ref: c6a92afc7ac0382d90bf0fbd1d2e3e258a57aad4 dir: /sys/lib/plumb/fileaddr/
addrelem='((#?[0-9]+)|(/[A-Za-z0-9_\^]+/?)|[.$])' addr=:($addrelem([,;+\-]$addrelem)*):?