Heredocs cause parsing errors (underlined lines) if anything happens immediately after the heredoc. Adding a redundant newline seems to fix the problem. 
Both versions work fine against the JRuby parser (outside of Netbeans).

This is using 6.7 RC2

Here is a snippet that produces the error. You can view the full version here, on line 45: 
http://kenai.com/projects/gemini/sources/mainline/content/src/behavior.rb?rev=aafa5302793cb0512282bee466722f9e6a5473ae

code = <<-ENDL
            def #{method}(#{args})
              raise Gemini::InvalidWrapWithCallbacksError.new("Cannot wrap #{method} with callbacks without \\"#{method_name}\\"") unless respond_to?
(:#{method_name})
              event = ValueChangedEvent.new(@target.#{method_name}, #{args})
              callback_abort = CallbackStatus.new
              @target.notify :before_#{method_name}_changes, event
              if callback_abort.continue?              
                self.wrapped_#{method}(#{args})
                @target.notify :after_#{method_name}_changes, event
              end
            end
          ENDL
          wrapped_methods << "before_#{method_name}_changes"