RubyInline, RDoc comment for C inline method

Hi,

I am playing around with RubyInline and want to include
a “inlined” C method to the API documentation generated by rdoc.

Here is an minimal example:

---- a.rb ----
require ‘inline’

class A

Method A.a1

inline do |builder|
# Method A.a2
builder.c %{
/*
* Method A.a3
*/
int a() {
return 0;
}
}
end

Method A.b

def self.b
0
end
end
---- end of a.rb ----

Calling “rdoc a.rb” generates only the documentation for method
A#b, not A#a.

Is it possible to let rdoc generate the documentation for A#a?
If so, how?

Daniel