git ignoring a directory, it's like it doesn't exist
I have a cloned repo. There's a directory, call it a/b/c that **used to be** its own repo, i.e. there was a/b/c/.git/ etc.

Now I want the files managed in the main repo. I don't care about the history in a/b/c, so I deleted the .git dir in a/b/c

But the problem is that `git status` is ignoring a/b/c completely. I can't `git add` it. It's as though I'd put the path into .gitignore (I haven't).

Obviously before, it made sense for git to ignore a subdir with a .git dir in it, but now how does it know the difference?

Is there somewhere else that ignore files are listed other than .gitignore and .git/info/excludes? There's nothing in the .git/config file?
git ignoring a directory, it's like it doesn't exist
===

I have a cloned repo. There's a directory, call it a/b/c that **used to be** its own repo, i.e. there was a/b/c/.git/ etc.

Now I want the files managed in the main repo. I don't care about the history in a/b/c, so I deleted the .git dir in a/b/c

But the problem is that `git status` is ignoring a/b/c completely. I can't `git add` it. It's as though I'd put the path into .gitignore (I haven't).

Obviously before, it made sense for git to ignore a subdir with a .git dir in it, but now how does it know the difference?

Is there somewhere else that ignore files are listed other than .gitignore and .git/info/excludes? There's nothing in the .git/config file?