The behavior I would like to suggest is that if you backspace in one of the above situations the fold opens automatically and one character is deleted. This way if I really did want to delete it all I can select it and do so otherwise I am given a clear indication of what happened.
+ 1 (+ 15 actually)
I've been bitten more than a couple times by this.
Jonathan Raphaelson University of Colorado at Boulder --
Home: 303-469-3442 Cell: 720-937-4372
jonathan.raphaelson@colorado.edu jonraphaelson@gmail.com