[PD] Getting argument number in abstraction

[patco]

 Hello, I am looking for a method for getting the number of arguments $1 $2 $3 ect... 
  
  for example in an object [foobar $1 $2 $3 $4] I would get the number 4.
  
   This would be useful for using the same patch to build different kinds of objects with a variating number of parameters.
  
   Thank in advance for any suggestion.
  
  Patco.
  
		
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