csh alias with variable number of arguments

Question

I would like to create a csh alias that performs one operation if invoked without arguments and a second operation if invoked with a single argument. Does anyone know how to do

Answer 1

I know this is a bit late but I just ran into needing something similar and hope it might still be relevant to somebody.

You can set the arguments as an array and query based on the size of the array:

alias testing 'set args_=(\!*); if ($#args_ > 0)  echo "this command has $#args_ arguments" endif'