public static function split_by_eol($str)
 {
     $str = Strings_Converter::line_endings_to_unix($str);
     return explode("\n", $str);
 }
 public static function line_separated($str)
 {
     $str = Strings_Converter::line_endings_to_unix($str);
     return explode("\n", $str);
 }