[Alpine-info] Feature request: allow cancel in expunge prompt when quitting

[Stefan Bertels]

When I quit alpine and have "expunge on quit" enabled. I get some safety 
question "really expunge" after pressing Q for Quit. I can answer "yes" 
and "no" -- alpine will quit anyway. Sometimes I'm not sure whether the 
correct messages are marked "D" and I want to have a short look at them. 
Currently I have to close pine and restart it (and go back to that 
folder etc).

So I would like to have a Cancel option in this prompt too (getting back 
to the last screen). This behaviour of (al)pine is quite old but could 
be more user-friendly.

Best regards
Stefan