From the help file:
An alias cannot call itself recursively mainly because this seems to cause more problems for users than it solves.
You can get around this by using scon/scid with the command, or you can use simple indirect recursion (ie. /alias1 calls /alias2 which calls /alias1 again). Be aware though that with both of these methods you're calling two commands for each level of recursion which means you can only have a maximum recursion depth of 500.
