Fix project directory detection with config inside .config (#2540)

Related: #2499

.github/workflows/tox.yml

@@ -166,7 +166,7 @@ jobs:
       WSLENV: FORCE_COLOR:PYTEST_REQPASS:TOXENV:TOX_PARALLEL_NO_SPINNER
       # Number of expected test passes, safety measure for accidental skip of
       # tests. Update value if you add/remove tests.
-      PYTEST_REQPASS: 704
+      PYTEST_REQPASS: 705
 
     steps:
       - name: Activate WSL1

src/ansiblelint/file_utils.py

@@ -427,9 +427,11 @@ def guess_project_dir(config_file: str | None) -> str:
         target = pathlib.Path(config_file)
         if target.exists():
             # for config inside .config, we return the parent dir as project dir
-            if target.name == ".config":
-                target = target.parent
-            path = str(target.parent.absolute())
+            cfg_path = target.parent
+            if cfg_path.parts[-1] == ".config":
+                path = str(cfg_path.parent.absolute())
+            else:
+                path = str(cfg_path.absolute())
 
     if path is None:
         try:

test/test_file_utils.py

@@ -218,13 +218,23 @@ def mockreturn(options: Namespace) -> dict[str, Any]:
     assert lintable_detected.kind == result[lintable_expected.name]
 
 
-def test_guess_project_dir(tmp_path: Path) -> None:
+def test_guess_project_dir_tmp_path(tmp_path: Path) -> None:
     """Verify guess_project_dir()."""
     with cwd(str(tmp_path)):
         result = guess_project_dir(None)
         assert result == str(tmp_path)
 
 
+def test_guess_project_dir_dotconfig() -> None:
+    """Verify guess_project_dir()."""
+    with cwd("examples"):
+        assert os.path.exists(
+            ".config/ansible-lint.yml"
+        ), "Test requires config file inside .config folder."
+        result = guess_project_dir(".config/ansible-lint.yml")
+        assert result == str(os.getcwd())
+
+
 BASIC_PLAYBOOK = """
 - name: "playbook"
   tasks: