On Jul 24, 2007, at 5:10 AM, F. Senault wrote:

> I can find the constant in Object.constants, but there is
> no delete_const in there.  :|

$ ri -T remove_const
---------------------------------------------------- Module#remove_const
      remove_const(sym)   => obj
------------------------------------------------------------------------
      Removes the definition of the given constant, returning that
      constant's value. Predefined classes and singleton objects  
(such as
      _true_) cannot be removed.

Hope that helps.

James Edward Gray II