submodules inside submodules?

> On Tuesday 17 March 2009, Johannes Schindelin wrote:
>> On Tue, 17 Mar 2009, Matthias Nothhaft wrote:
>> > can I put submodules into submodules?
>>
>> Yes.
>
> However, initializing them is a bit clunky, as Git will only init/update one
> "level" of submodules at a time. In other words, a single "git submodule
> update --init" will only intialize the first level of submodules. You will
> have to redo that command within submodules that have their own (i.e.
> nested) submodules.