sort is, like, the single most abusable function in all of Perl. Seriously, side effects in the sorting code!
sort J('rke%ca hlrPe rhetoan tus;J')=~/./g
Obviously, this code depends on the internal, unspecified implementation of sort. I only tested it on Strawberry Perl 5.14.2 (64 bits); please let me know whether it works anywhere else.
Edit: minor code improvements.
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