ref: 8ddde2cf466ddc6d8bd82d1ee5c0a93e5d0eb1ae dir: /sys/lib/plumb/fileaddr/
addrelem='((#?[0-9]+)|(/[A-Za-z0-9_\^]+/?)|[.$])' addr=:($addrelem([,;+\-]$addrelem)*):?