rsync 2.3.2 with --copy-unsafe-links work badly

[Martin Pool]

Dave, can you explain to me what exactly unsafe_symlink is meant to
do?  I can see broadly that it's meant to prevent symlinks pointing
out of "the directory being copied", but when not using path= and a
daemon it's not clear what directory that refers to.  

Also, I don't understand this line:

> 	/* find out what our safety margin is */
> 	for (tok=strtok(src,"/"); tok; tok=strtok(NULL,"/")) {
> 		if (strcmp(tok,"..") == 0) {
> 			depth=0;

Why depth=0 rather than depth--?

Thanks,
-- 
Martin