Support docs from the root directory.

mkdocs/config/config_options.py

@@ -734,14 +734,6 @@ def post_validation(self, config: Config, key_name: str):
         if not config.config_file_path:
             return
 
-        # Validate that the dir is not the parent dir of the config file.
-        if os.path.dirname(config.config_file_path) == config[key_name]:
-            raise ValidationError(
-                f"The '{key_name}' should not be the parent directory of the"
-                f" config file. Use a child directory instead so that the"
-                f" '{key_name}' is a sibling of the config file."
-            )
-
 
 class File(FilesystemObject):
     """
@@ -800,13 +792,6 @@ def post_validation(self, config: Config, key_name: str):
                 f"it will be deleted if --clean is passed to mkdocs build. "
                 f"(site_dir: '{site_dir}', docs_dir: '{docs_dir}')"
             )
-        elif (site_dir + os.sep).startswith(docs_dir.rstrip(os.sep) + os.sep):
-            raise ValidationError(
-                f"The 'site_dir' should not be within the 'docs_dir' as this "
-                f"leads to the build directory being copied into itself and "
-                f"duplicate nested files in the 'site_dir'. "
-                f"(site_dir: '{site_dir}', docs_dir: '{docs_dir}')"
-            )
 
 
 class Theme(BaseConfigOption[theme.Theme]):

mkdocs/structure/files.py

@@ -343,6 +343,11 @@ def get_files(config: MkDocsConfig) -> Files:
     files: list[File] = []
     conflicting_files: list[tuple[File, File]] = []
     for source_dir, dirnames, filenames in os.walk(config['docs_dir'], followlinks=True):
+        # Skip processing any files in the site_dir
+        if os.path.abspath(source_dir) == os.path.abspath(config['site_dir']):
+            log.info(f"Excluding files in site_dir '{config['site_dir']}'.")
+            continue
+
         relative_dir = os.path.relpath(source_dir, config['docs_dir'])
         dirnames.sort()
         filenames.sort(key=_file_sort_key)

mkdocs/tests/config/config_options_legacy_tests.py

@@ -768,20 +768,6 @@ class Schema:
                 )
                 self.assertEqual(conf['dir'], os.path.join(base_path, 'foo'))
 
-    def test_site_dir_is_config_dir_fails(self):
-        class Schema:
-            dir = c.DocsDir()
-
-        with self.expect_error(
-            dir="The 'dir' should not be the parent directory of the config file. "
-            "Use a child directory instead so that the 'dir' is a sibling of the config file."
-        ):
-            self.get_config(
-                Schema,
-                {'dir': '.'},
-                config_file_path=os.path.join(os.path.abspath('.'), 'mkdocs.yml'),
-            )
-
 
 class ListOfPathsTest(TestCase):
     def test_valid_path(self):
@@ -882,23 +868,6 @@ def test_doc_dir_in_site_dir(self):
                 ):
                     self.get_config(self.Schema, test_config)
 
-    def test_site_dir_in_docs_dir(self):
-        j = os.path.join
-
-        test_configs = (
-            {'docs_dir': 'docs', 'site_dir': j('docs', 'site')},
-            {'docs_dir': '.', 'site_dir': 'site'},
-            {'docs_dir': '', 'site_dir': 'site'},
-            {'docs_dir': '/', 'site_dir': 'site'},
-        )
-
-        for test_config in test_configs:
-            with self.subTest(test_config):
-                with self.expect_error(
-                    site_dir=re.compile(r"The 'site_dir' should not be within the 'docs_dir'.*")
-                ):
-                    self.get_config(self.Schema, test_config)
-
     def test_common_prefix(self):
         """Legitimate settings with common prefixes should not fail validation."""
         test_configs = (

mkdocs/tests/config/config_options_tests.py

@@ -972,20 +972,6 @@ class Schema(Config):
                 )
                 self.assertEqual(conf.dir, os.path.join(base_path, 'foo'))
 
-    def test_site_dir_is_config_dir_fails(self) -> None:
-        class Schema(Config):
-            dir = c.DocsDir()
-
-        with self.expect_error(
-            dir="The 'dir' should not be the parent directory of the config file. "
-            "Use a child directory instead so that the 'dir' is a sibling of the config file."
-        ):
-            self.get_config(
-                Schema,
-                {'dir': '.'},
-                config_file_path=os.path.join(os.path.abspath('.'), 'mkdocs.yml'),
-            )
-
 
 class ListOfPathsTest(TestCase):
     def test_valid_path(self) -> None:
@@ -1095,23 +1081,6 @@ def test_doc_dir_in_site_dir(self) -> None:
                 ):
                     self.get_config(self.Schema, test_config)
 
-    def test_site_dir_in_docs_dir(self) -> None:
-        j = os.path.join
-
-        test_configs = (
-            {'docs_dir': 'docs', 'site_dir': j('docs', 'site')},
-            {'docs_dir': '.', 'site_dir': 'site'},
-            {'docs_dir': '', 'site_dir': 'site'},
-            {'docs_dir': '/', 'site_dir': 'site'},
-        )
-
-        for test_config in test_configs:
-            with self.subTest(test_config):
-                with self.expect_error(
-                    site_dir=re.compile(r"The 'site_dir' should not be within the 'docs_dir'.*")
-                ):
-                    self.get_config(self.Schema, test_config)
-
     def test_common_prefix(self) -> None:
         """Legitimate settings with common prefixes should not fail validation."""
         test_configs = (

mkdocs/tests/structure/file_tests.py

@@ -672,6 +672,18 @@ def test_get_files_exclude_readme_with_index(self, tdir):
         self.assertIsInstance(files, Files)
         self.assertEqual([f.src_uri for f in files], ['index.md', 'foo.md'])
 
+    @tempdir(
+        files=[
+            'index.md',
+            'site/foo.md',
+        ]
+    )
+    def test_get_files_exclude_site_dir(self, tdir):
+        config = load_config(docs_dir=tdir, site_dir=os.path.join(tdir, "site"))
+        files = get_files(config)
+        self.assertIsInstance(files, Files)
+        self.assertEqual([f.src_uri for f in files], ['index.md'])
+
     @tempdir()
     @tempdir(files={'test.txt': 'source content'})
     def test_copy_file(self, src_dir, dest_dir):