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#!/usr/bin/perl

...
use warnings;

print do{@ARGV=$0;<>};

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print do{local(@ARGV,$/)=$0;<>}; # the usual idiom
print do{@ARGV=$0;local$/;<>};
...
print do{open$_,"<$0";<$_>};
print do{@ARGV=$0;*/;<>};        # wtf
print do{@ARGV=$0;<>};           # wow