Purge option glorified
Purge option glorified

The invert filter option is automatically set for -P (and cannot be used
on the command line). The intention is that the grep option (-G) is used
to find the items that should be removed. To remove them, the same
command is run with -P instead of -G.

In general, purge will remove matching items (silently).

Backward compatibility for option -F (no invert filter).

Signed-off-by: Lars Henriksen <a2fd37141f23d5929304549ae011a7f22ebb96a9@get2net.dk>
Signed-off-by: Lukas Fleischer <c9ca73f8336dcfb037ec2c2abf52d80a6847a5cd@calcurse.org>

lfos/calcurse,lfos/calcurse,lfos/calcurse