In addition to my commentary here, if you're going to be using statement modifiers, just use $1 
print ">>$1<<\n" if  $line =~ /^[a-z-]+(\d.*)$/;

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also writable as 
$line =~ /^[a-z-]+(\d.*)$/ and print ">>$1<<\n" ;

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In reply to Re^3: regex behaves differently in split vs substitute? by Anonymous Monk
in thread regex behaves differently in split vs substitute? by raygun

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