back prompt on deleted dir

[biax]

you know how it is you get a useless "error changing directory" prompt when you press back. why not just go back to the next dir that exists, or just not prompt and not change directory so that the user would know it was deleted and that he has to press back again to go back further.

ive not used sally yet, but hope to see this feature in by the time i do my pc overhaul