Network Failure. Overwrite

[nobicycle]

Thank you for Poca.

I checked the several issues relating to download control.
Following network failure I had several zero size downloads.
To obtain them I ran poca again - wasteful since it downloads ALL again.

I now realise there are date filters - but that is overkill.
In addition, the date logic could be very complicated if certain files were downloaded but others not.

All one would need is a -k|--keep option to prevent overwrite. Poca would then re-download only those deleted by the user.