##
$line =~ s/["'] [^'"\n] ['"]//gxms
####
$count = ($line =~ s/use [^;]+ ;//gxms);
$total += $count;
####
my $count = ($all_text =~ s/<<(\w+) .*? \1//gxms);
$total += $count;
####
$total++ if $all_text =~ s/(__DATA__|__END__) .*//xms;