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

[Eli Zaretskii]

> From: Philipp Stephani <address@hidden>
> Date: Sat, 19 Mar 2016 16:14:04 +0000
> Cc: address@hidden
> 
> Knowing the arity in cases like this requires either evaluating the function, 
> or complex parsing of its definition.

What do you mean by "complex parsing"?  Did you look at how the Lisp
interpreter does that?

> It is very reasonable to assume that (func-arity 'g) would return (0 . many), 
> because that is g's arity as far as
> the Lisp interpreter is concerned. 

No, that's not g's arity:

  (g 10 202 30) => error -> "Wrong number of arguments"