1  # Add a +missing_name+ method to NameError instances.
   2  class NameError #:nodoc:  
   3    # Add a method to obtain the missing name from a NameError.
   4    def missing_name
   5      if /undefined local variable or method/ !~ message
   6        $1 if /((::)?([A-Z]\w*)(::[A-Z]\w*)*)$/ =~ message
   7      end
   8    end
   9    
  10    # Was this exception raised because the given name was missing?
  11    def missing_name?(name)
  12      if name.is_a? Symbol
  13        last_name = (missing_name || '').split('::').last
  14        last_name == name.to_s
  15      else
  16        missing_name == name.to_s
  17      end
  18    end
  19  end