Why Missing [ at end-of-block?

I copied the source of http://www.ross-gill.com/r/link-up.html to linkup.r and after

do %linkup.r

I go开发者_StackOverflow中文版t

Syntax Error: Missing [ at end-of-block
** Near: (line 89) ]

I can't see why it doesn't work ?

---

There was a typo in the HTML version - an errant close bracket somehow crept into the page. Should be fine now, or copy direct from source:

write %link-up.r read http://www.ross-gill.com/r/link-up.r

Or do direct from the site:

do http://www.ross-gill.com/r/link-up.r