in reply to Working on pattern matching
Add in a 'die' function to see why file is not opening:
open my $fh, '<', $input_file or die "Cannot open file: $!";
$PM = "Perl Monk's";
$MCF = "Most Clueless Friar Abbot Bishop Pontiff Deacon Curate Priest Vicar";
$nysus = $PM . ' ' . $MCF;
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