Warning for embedding Git Repository even though I'm using Submodules

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I'm trying to figure out how Git Submodules work. I read a lot of documentation online and managed to add submodules to my project. This seems to work but for some reason I keep getting this warning in my terminal:

warning: adding embedded git repository: web/modules/custom/svds_adminmenu
hint: You've added another git repository inside your current repository.
hint: Clones of the outer repository will not contain the contents of
hint: the embedded repository and will not know how to obtain it.
hint: If you meant to add a submodule, use:
hint: 
hint:   git submodule add <url> web/modules/custom/svds_adminmenu
hint: 
hint: If you added this path by mistake, you can remove it from the
hint: index with:
hint: 
hint:   git rm --cached web/modules/custom/svds_adminmenu
hint: 
hint: See "git help submodule" for more information.

I find this strange because the svds_adminmenu repository is the one I added as submodule. So why is it still giving me this warning.

What I did to get this is the following:

git clone path/repo.git

And after this I used the following

git submodules update --init

I got this warning in the terminal when I made changes to the .gitignore file and did the following:

git rm -r --cached
git add --all
git commit -m '.gitignore changed'

What is going wrong?

git-submodules version-control git
2 Answers

This is normally seen for a nested Git repository with no commit checked out (unborn branch, or freshly created without any commit)

Git 2.22 (Q2 2019) will be more explicit about this situation:

See commit f937bc2, commit b228270, commit e138111 (09 Apr 2019) by Kyle Meyer (kyleam).
(Merged by Junio C Hamano -- gitster -- in commit 4ab701b, 08 May 2019)

add: error appropriately on repository with no commits

The previous commit made 'git add' abort when given a repository that doesn't have a commit checked out.
However, the output upon failure isn't appropriate:

% git add repo
warning: adding embedded git repository: repo
hint: You've added another git repository inside your current repository.
hint: [...]
error: unable to index file 'repo/'
fatal: adding files failed

The hint doesn't apply in this case, and the error message doesn't tell the user why 'repo' couldn't be added to the index.

Provide better output by teaching add_to_index() to error when given a git directory where HEAD can't be resolved.
To avoid the embedded repository warning and hint, call check_embedded_repo() only after add_file_to_index() succeeds because, in general, its output doesn't make sense if adding to the index fails.

You will now see:

'<nested repo folder' does not have a commit checked out
fatal: adding files failed
VonC_63090

You can delete the .git folder in the child folder and then track it back using

git add the_child_folder
git commit -m 'commit message'
user_134401430
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