The current HIG still says "Use an ellipsis whenever choosing a menu item requires additional input from the user", but doesn't elaborate on this. Even Apple s

The current HIG still says "Use an ellipsis whenever choosing a menu item requires additional input from the user", but doesn't elaborate on this. Even Apple seems to have abandoned their earlier conventions and mostly just resorts to "use an ellipsis if the control will show another window/dialog". Apple's guidelines used to make it clear that (a) if the only additional input was a simple confirmation, it shouldn't get an ellipsis, and (b) if the whole point of the menuitem/button was to show a window, then it doesn't need 'more input', so it shouldn't get an ellipsis. Both of these are violated by the Mac's built-in applications in Mac OS X, which is a shame.