in reply to Delete last line of file with regex

Do you really need to detect the eof from inside the regex? 
while (<>) {
    print unless /^##/ && eof;
}

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map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In Section Seekers of Perl Wisdom