Re: git-add fails after file type change

> In the course of experimenting with using git for my snapshot backups, I 
> ran into what looks like a bug in git-add: it croaks when it tries to 
> add a file whose type has changed, specifically when a directory gets 
> moved and a symbolic link is put in the old location pointing to the new 
> one. Here's a simple test case:
> 
> $ git init-db
> defaulting to local storage area
> $ mkdir dir
> $ echo foo > dir/file
> $ git add .
> $ git commit -m "initial commit" -a
> Committing initial tree f4bc9c50d08b041f5e096fa68e243c34170f1cd8
> create mode 100644 dir/file
> $ mv dir dir.real
> $ ln -s dir.real dir
> $ git add .
> fatal: unable to add dir to index
> 
> Is "git add ." the wrong thing to do here? I have been using it as a 
> generic "pick up all the files I haven't added yet" command. Or is this 
> a bug?
> 
> For what it's worth, "git update-index dir" and "git update-index --add 
> dir" both fail too.