From 77cee67f1155a5f869e2f47d834a86f650891807 Mon Sep 17 00:00:00 2001
From: Adam Turner <9087854+aa-turner@users.noreply.github.com>
Date: Sun, 25 Sep 2022 19:55:15 +0100
Subject: [PATCH] Define extra indent as a class attribute

---
 sphinx/ext/autodoc/__init__.py     | 3 ++-
 sphinx/ext/autosummary/__init__.py | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/sphinx/ext/autodoc/__init__.py b/sphinx/ext/autodoc/__init__.py
index c6088f45d23..93df64bb14a 100644
--- a/sphinx/ext/autodoc/__init__.py
+++ b/sphinx/ext/autodoc/__init__.py
@@ -961,6 +961,7 @@ class ModuleDocumenter(Documenter):
     objtype = 'module'
     content_indent = ''
     titles_allowed = True
+    _extra_indent = '   '
 
     option_spec: OptionSpec = {
         'members': members_option, 'undoc-members': bool_option,
@@ -980,7 +981,7 @@ def __init__(self, *args: Any) -> None:
 
     def add_content(self, more_content: Optional[StringList]) -> None:
         old_indent = self.indent
-        self.indent += '   '
+        self.indent += self._extra_indent
         super().add_content(None)
         self.indent = old_indent
         if more_content:
diff --git a/sphinx/ext/autosummary/__init__.py b/sphinx/ext/autosummary/__init__.py
index ac60216b0a0..f462a5e5ddc 100644
--- a/sphinx/ext/autosummary/__init__.py
+++ b/sphinx/ext/autosummary/__init__.py
@@ -371,6 +371,9 @@ def get_items(self, names: List[str]) -> List[Tuple[str, str, str, str]]:
 
             # -- Grab the summary
 
+            # bodge for ModuleDocumenter
+            documenter._extra_indent = ''  # type: ignore[attr-defined]
+
             documenter.add_content(None)
             summary = extract_summary(self.bridge.result.data[:], self.state.document)