[Ruby] splatting arguments in a C extension

[Ryan Davis]

On Feb 1, 2008, at 22:53 , Aaron Patterson wrote:

> The function is defined in ruby, and I'm calling it from C.  I need  
> to get the rb_funcall to splat my args (heh).

I'm not sure you can. If it is possible, splat the arg on the ruby  
end. The following works:

require 'rubygems'
require 'inline'

class X
   def m *args
     p(*args)
   end

   inline do |builder|
     builder.c '
       void x(VALUE ary) {
         rb_funcall(self, rb_intern("m"), 1, ary);
       }
     '
   end
end

X.new.x([1, 2, 3])

Other variations I've tried (without *args on the ruby side) don't  
work. I've been grepping around the ruby source looking for something  
and come up blank. I suppose I should read the source for rb_funcall  
straight up.