Path manipulation in ACL

I need to take the path and split it and remove the first ‘chunk’:

/something/somethingelse >>> /somethingelse

How can this be done in an ACL?

Hi. Could you explain why you want to do this in an ACL?
As I understand, they are like a variable that accepts just Boolean values, returned by some other functions/fetchers/…

I’m pretty sure there are some articles about path manipulation in the HAProxy official blog.