regex automaton by rotary-o

var s=readLine
while(s!={println(s)
s=s.replaceAll("\\$'(?=(.*))|\\$`(?<=^(.*)\\$`)","$1$2")take 50
s})0

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

To protect the system from spam, please input your favorite sport (hint: I believe its name must start with 'g', case insensitive)

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