From: Jacob Fugal <lukfugl@...>
Date: 2006-01-17T05:31:13+09:00
Subject: Re: overriding Object::send

Try:

class Object
   alias_method :old_send, :send
   def send meth, *args
     STDERR.puts "#{ meth } was called"
     old_send meth, *args
   end
end

The difference is the splat in front of args in the invocation of
old_send. With the splat there, it seems to work for me.

irb> -1.send(:abs)
abs was called
=> 1

This used to give me an error about wrong number of arguments.

Note: this still doesn't work without invoking send explicitly, since
foo.bar is *actually* equivalent to foo.__send__(:bar), *not*
foo.send(:bar). It just so happens the the default implementation of
send just forwards to __send__. And overwriting __send__ is a *bad*
idea. :)

Jacob Fugal