www,

Why do you want to use Lua doing this? Maybe just to add some simple rules to the "URL transforming" list would be enough?

Now I understand. This somesite.co.uk type of hosts complicates all the matter.
I've been in similar situation before when customizing the structure of the cache to my needs. Solved it by breaking the task into two stages. Here is what I did. Don't know if it helps.

mai62, my extension is a little different from that. It only changes the referer when the request comes from another host. I had your code already from last year's thread. I actually based my extension on it, so thank you again for pointing me in the right direction.

mirny, I've finally  found a way to do that. I didn't use your code, but it was helpful to exercise my brain a little. I used a negative look-ahead; here's the working code:


I'll post the full extension on another thread later on.