[rdiff-backup-users] What happens when you move files around?

[Karjala]

On my system I move files around directories a bit. How are files that 
have been moved since the last backup treated by rdiff-backup? I.e. if I 
rename a 1GB file that has already been backed-up, will one extra GB of 
backup storage be taken up on the next automated backup? Also what would 
happen to the amount of backup storage required, if I moved a 1GB file 
to another directory (which will also be backed up on the next backup)?

Thanks,
- K.