Re: How many parameters does an elisp function take?

[Kevin Rodgers]

Alan Mackenzie wrote:
> Is it possible to determine at run time how many parameters an elisp
> function takes?  For example, I'd like to write something like:
>
> (how-many-params 'null)
>
> and have it evaluate to 1.  Or something like that.  Together with some
> reasonable convention for indicating &optional and &rest arguments.

I would start with eldoc-function-arglist.

--
Kevin Rodgers