8005403: Open-source Nashorn Reviewed-by: attila, hannesw, lagergren, sundar Contributed-by: james.laskey@oracle.com, akhil.arora@oracle.com, andreas.woess@jku.at, attila.szegedi@oracle.com, hannes.wallnoefer@oracle.com, henry.jen@oracle.com, marcus.lagergren@oracle.com, pavel.semenov@oracle.com, pavel.stepanov@oracle.com, petr.hejl@oracle.com, petr.pisl@oracle.com, sundararajan.athijegannathan@oracle.com

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escape is function with arity 1

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unescape is function with arity 1

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This%20is%20great%21

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What%20is%20going%20on%20here%3F%3F

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%uFFFF%uFFFE%u1FFF

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This is great!

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What is going on here??