Encoder decoder by emoken

H
$!d
g
s/\n.*\n/##/m
:
x
/^.e/{x
s/#\(.*#\)\(.\)\(.\)\?/\2#\3\1/
b2}
x
s/#\+\(.\)\(.*\)\(.\)/\1\3#\2/
:2
t
s/#//g

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

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