ref: 74bcc2aa4c0b8e2d9915ae2cda6e4b2fabf56e95 dir: /sys/lib/plumb/fileaddr/
addrelem='((#?[0-9]+)|(/[A-Za-z0-9_\^]+/?)|[.$])' addr=:($addrelem([,;+\-]$addrelem)*)