shortfacl - Reformat POSIX.1e ACL long form to short form

shortfacl

#! /bin/sed -f

# shortfacl - Reformat POSIX.1e ACL long form to short form
# Copyright (C) 2014 Matous J. Fialka
# Released under the terms of The MIT License

# Use as `getfacl /path/to/object | shortfacl`

# Remove comments
s/#.*$//

# Remove trailing whitespace
s/[ \t]\+$//

# Shorten keywords
s/^\(.\)[^:]\+:/\1:/

# Join lines and cleanup
s/.*/&,/
H
$ {
	x
	s/,\n/,/g
	s/\n\(.*\)/\1/
	s/\(.*\),/\1/
	s/,\+/,/g
	s/,$//
	s/^,//
	p
}
d