with a Git version 1.7.8 or newer) will be removed from the work
tree, as their repository lives inside the .git directory of the
superproject. If a submodule (or one of those nested inside it)
-still uses a .git directory, `git rm` will fail - no matter if forced
-or not - to protect the submodule's history. If it exists the
-submodule.<name> section in the linkgit:gitmodules[5] file will also
-be removed and that file will be staged (unless --cached or -n are used).
+still uses a .git directory, `git rm` will move the submodules
+git directory into the superprojects git directory to protect
+the submodule's history. If it exists the submodule.<name> section
+in the linkgit:gitmodules[5] file will also be removed and that file
+will be staged (unless --cached or -n are used).
-A submodule is considered up-to-date when the HEAD is the same as
+A submodule is considered up to date when the HEAD is the same as
recorded in the index, no tracked files are modified and no untracked
files that aren't ignored are present in the submodules work tree.
Ignored files are deemed expendable and won't stop a submodule's work