Inspired by a question on beginners@perl.org, here's my response on how to capture the source code for the running program, unless special measures are taken.
my %sources;
local *ARGV; local $/;
@ARGV = ($0, values %INC);
while (<>) {
  $sources{$ARGV} = $_;
}

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In reply to Get the source code for the running application into a hash by merlyn

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