Hello Aldebaran,

Just a couple of points in haukex’s excellent answer that I would like to emphasise:

1. The most important data missing from your SSCCE is your desired output. “A picture is worth a thousand words.”
2. This line:

   my @lines = $path_to_file->slurp;
   [download]

   almost certainly doesn’t do what you think it does. The documentation for Path::Tiny::slurp says that it “Reads file contents into a scalar.” So after that line of code is executed, the array @lines contains a single entry, identical to the string previously assigned to $guts. To get an array of lines, you need to split the string, either on newlines as haukex showed:

   my $guts  = $path_to_file->slurp;
   my @lines = split /\n/, $guts;
   [download]

   or using the special multiline pattern documented in split:

   my $guts  = $path_to_file->slurp;
   my @lines = split /^/, $guts;
   [download]

   The latter preserves newlines in the input data, including blank lines at the end of the input file; the former does not.

Hope that helps,