Re: Arbitrary function: find the number(s) of expected arguments

[Eli Zaretskii]

> From: Philipp Stephani <address@hidden>
> Date: Sat, 19 Mar 2016 16:34:55 +0000
> Cc: address@hidden, address@hidden
> 
>  > (g 10 202 30) => error -> "Wrong number of arguments"
>  >
>  > This cannot be detected without evaluating the function.
> 
>  Are we discussing the usefulness of the function, or are we discussing
>  how best to implement it?
> 
> 
> We are discussing for which cases it can be implemented. It can be 
> implemented and would be useful for a
> wide range of functions, such as those defined with defun. It cannot be 
> implemented for functions like g; that's
> just a limitation we have to live with. 

That's one possibility.  Another is that the implementation will be
able to find out the truth, just like the Lisp interpreter does.