Pressing CTRL+DELETE removes the visible history entry, if any, then moves to the next history entry (like pressing DOWN would do).
If the last history entry is removed the previous one is shown in the prompt (like pressing UP would do).
CTRL+DELETE works on history entries only: i.e. it has no effect on a command entered but not executed yet.
To implement above behaviour I added saving history table to file on Escape key press.
Signed-off-by: Massimiliano Brocchini <massimiliano.brocchini@gmail.com>
Signed-off-by: Uli Schlachter <psychon@znc.in>
b965adc33f