gitpython-developers
diff --git a/‎AUTHORS
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diff --git a/‎README.md
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diff --git a/‎test/test_submodule.py
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@@ -51,4 +51,5 @@ Contributors are:
 -Luke Twist <itsluketwist@gmail.com>
 -Joseph Hale <me _at_ jhale.dev>
 -Santos Gallegos <stsewd _at_ proton.me>
+-Wenhan Zhu <wzhu.cosmos _at_ gmail.com>
 Portions derived from other open source works and are clearly marked.
@@ -93,9 +93,9 @@ See [Issue #525](https://github.com/gitpython-developers/GitPython/issues/525).
 
 ### RUNNING TESTS
 
-_Important_: Right after cloning this repository, please be sure to have executed
-the `./init-tests-after-clone.sh` script in the repository root. Otherwise
-you will encounter test failures.
+_Important_: Right after cloning this repository, please be sure to have
+executed `git fetch --tags` followed by the `./init-tests-after-clone.sh`
+script in the repository root. Otherwise you will encounter test failures.
 
 On _Windows_, make sure you have `git-daemon` in your PATH. For MINGW-git, the `git-daemon.exe`
 exists in `Git\mingw64\libexec\git-core\`; CYGWIN has no daemon, but should get along fine
 
@@ -906,6 +906,28 @@ def assert_exists(sm, value=True):
             assert osp.isdir(sm_module_path) == dry_run
         # end for each dry-run mode
 
+    @with_rw_directory
+    def test_ignore_non_submodule_file(self, rwdir):
+        parent = git.Repo.init(rwdir)
+
+        smp = osp.join(rwdir, "module")
+        os.mkdir(smp)
+
+        with open(osp.join(smp, "a"), "w", encoding="utf-8") as f:
+            f.write('test\n')
+
+        with open(osp.join(rwdir, ".gitmodules"), "w", encoding="utf-8") as f:
+            f.write("[submodule \"a\"]\n")
+            f.write("    path = module\n")
+            f.write("    url = https://github.com/chaconinc/DbConnector\n")
+
+        parent.git.add(Git.polish_url(osp.join(smp, "a")))
+        parent.git.add(Git.polish_url(osp.join(rwdir, ".gitmodules")))
+
+        parent.git.commit(message='test')
+
+        assert len(parent.submodules) == 0
+
     @with_rw_directory
     def test_remove_norefs(self, rwdir):
         parent = git.Repo.init(osp.join(rwdir, "parent"))