gistfile1.cs

				// This path can be reentered if something else tries to close the window
				// before the user responds to the "Save changes?" dialog.
				// This results in a stack of "Save changes?" dialogs, and unpredictable behavior 
				// when responding to all but the first.
				// The Right Fix would be to make it impossible for this to happen.
				// For now, we work around by replacing the OnClosing handler 
				// until we get an answer back from the user.