On Tue, 12 Sep 2006, Al Viro wrote:
 
 [ObGit: git-diff after git-mv + modify a couple of lines generates
 deletion+new file instead of rename.  Weird...] 
No it doesn't.
Are you sure you used the "-M" flag to ask for renames?
The other alternative is that the file was so small that the change is 
considered significant, and it becomes a rewrite.
		Linus