Well, (i) it's less than 80 chars, (ii) it's indeed obfuscated, (iii) it does print that string, although I think it's preferrable if possible to print \n as well, (iv) it's obviously strict safe.
Said this, IMO it's rather too naive and "transparent". However I suspect you can't do much better in such a small space.
Personally I'd use all lowecase letters and use some trick to turn it into the wanted string, a la:
s/\w+/$|--?$&:ucfirst$&/ge;
# or
s/\w+/$&^($|--?'':"\x20")/ge;
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