Obfuscation to delight and amaze. 
#!/usr/bin/perl -nl
use re 'eval';local$";
/@{[map'(?:(.)|.)',1..length]}(?{print+join'',map$$_,1..length})(?!)/;

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UPDATE: sorry, it should have #!/usr/bin/perl -nl at the top. I'm a silly person.

japhy -- Perl and Regex Hacker

In reply to (Fixed) Mr. Regex Strikes Again! by japhy

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