On Sun, Oct 28, 2012 at 1:02 AM, Jens Lehmann <jens.lehm...@web.de> wrote:
> Am 26.10.2012 22:43, schrieb Francis Moreau:
>> On Fri, Oct 26, 2012 at 10:05 PM, Jens Lehmann <jens.lehm...@web.de> wrote:
>> [...]
>>> That is weird, "git diff --submodule" should show that too. Is there
>>> anything unusual about your setup? (The only explanation I can come
>>> up with after checking the code is that your submodule has neither a
>>> .git directory nor a gitfile or the objects directory in there doesn't
>>> contain these commits)
>> Oh now you're asking, I think the submodule has been added by using
>> the --reference option of git-submodule-add.
>>   $ cd configs
>>   $ cat .git
>>   gitdir: ../.git/modules/configs
> Thanks, I suspect the --reference option makes the difference here,
> I'll check that as soon as I find some time.

Yes that's fairly easy to reproduce:

$ mkdir super
$ cd super
$ git init
$ git submodule add --reference ~/tmp/git-submodule/public/a.git
~/tmp/git-submodule/public/a.git a
$ git commit -m "Initial creation of super project"
$ cd a
$ date >a.txt
$ git commit -a -m "add to a.txt a random change"
$ cd ..
$ git submodule summary
* a 2f8803a...a1aa4bf (1):
  > add to a.txt a random change
$ git commit -a -m "Include a's changes in super project"
$ git diff --submodule=log HEAD~1 HEAD
Submodule a 2f8803a...a1aa4bf (commits not present)

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