What is this grey git icon?

Question

Looks like a folder inside of a folder - or maybe a lock? The file cannot be opened and none of the content appears to be there.

One thing I do know is that this fol

Answer 1

Considering it is a submodule, one way for you to see its content is to:

• clone that gitHub repo locally

• do a:

  git submodule update --init
  

But you should be able to click on it and browse its content directly from the web, if it was a repo hosted by GitHub.
See an example in my project https://github.com/VonC/compileEverything, where the submodule SemanticUI is directly browsable.

Answer 2

That is the github icon for a git submodule. From the book: http://git-scm.com/book/en/Git-Tools-Submodules