Cut & paste is not the same as download. The "+" signs in your sample data exist because you didn't use the download link. Instead you used cut & paste. That would be fine, except that perlmonks wraps long code lines (to prevent lines from uglificating the page). When it does so, it includes a '+' at the beginning of wrapped lines to let you know about it.

If you use the download link, you'll get a nice plain text page that you can save, and it will be the correct code.

...roboticus

When your only tool is a hammer, all problems look like your thumb.