[Catalyst] A point of confusion/frustration on chained actions

[Stephen Howard]

I am trying to sort out some interdependent chains and I'm having  
trouble figuring out why the urls I'm trying to build aren't working  
out.

I have a site where the primary objects of interest are flash-based  
tutorials.  Each tutorial can have comments, and each comment can have  
replies.  I'm using jQuery to manipulate comments in a REST fashion,  
and I'm aiming for a url map like this:

/tutorials                         # GET a list of tutorials, or POST  
a new tutorial
/tutorials/*                       # GET/POST/DELETE a specific tutorial
/tutorials/*/comments              # GET the comments for a tutorial,  
or POST a new comment
/tutorials/*/comments/*            # GET/POST/DELETE a specific comment
/tutorials/*/comments/*/replies    # GET the replies for a comment, or  
POST a new reply
/tutorials/*/comments/*/replies/*  # GET/POST/DELETE a specific reply

But the best I've been able to come up with is this:

  /tutorials
^tutorials/(\d+)$
/tutorial/*/comments
/tutorial/*/comment/*/replies
/tutorial/*/comment/*/reply/*

missing: /tutorial/*/comment (what would I call it? /tutorial/*/cmt ?)

Essentially I'm hitting an issue with is due to the (seeming?)  
impossibility of matching a chained set of actions at multiple url  
depths. Is it possible to build the url structure I'm looking for  
above using chained actions?

thanks,
Stephen
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