ref: 3a0d5f41a8253b4a3fbb6ae4b6ca77789fd6ae83 dir: /sys/lib/plumb/fileaddr/
addrelem='((#?[0-9]+)|(/[A-Za-z0-9_\^]+/?)|[.$])' addr=:($addrelem([,;+\-]$addrelem)*)