This is the revision history for perlhack in <freenode.net:#perlbot>

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13658 perlhack is How to hack at the Perl internals - https://perldoc.pl/perlhack simcop2387 <*:##NULL>
110 perlhack is How to hack at the Perl internals - http://perldoc.perl.org/perlhack.html perlbot <*:##NULL>