I didn't notice until after I commented on the site that the post is from 2009.

His call to sort reads like this:

alist.sort(mysort)

The ordering function doesn't sort, it orders. I would have called the ordering function myorder, so the call would read:

alist.sort(myorder)

More specifically, his ordering function orders by length, so even better would be:

alist.sort(orderByLength)