permission list by tails (%20)

s/^/0000 is -RWXRWXRWX/
:
s/~/<1234567~01>/
s/\(.\)<.*\1\(~*.\).*>/\2/
t
h
/[RWX]/!q
s//-/gp
g
s/.[rwx]*$/\U\l&/
s/ /~ /
t

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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