From 8e926808aa0a79930d96f4f46a176fe3be407ce9 Mon Sep 17 00:00:00 2001
From: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Date: Sat, 9 Dec 2023 19:25:36 -0800
Subject: [PATCH] Found another behavior change

---
 src/black/lines.py                                         | 2 +-
 src/black/mode.py                                          | 2 +-
 src/black/nodes.py                                         | 2 +-
 tests/data/cases/preview_no_blank_line_before_docstring.py | 7 +++++++
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/black/lines.py b/src/black/lines.py
index 86fc2110d91..e80914de4d1 100644
--- a/src/black/lines.py
+++ b/src/black/lines.py
@@ -212,7 +212,7 @@ def _is_triple_quoted_string(self) -> bool:
     @property
     def is_docstring(self) -> bool:
         """Is the line a docstring?"""
-        if Preview.format_module_docstring not in self.mode:
+        if Preview.unify_docstring_detection not in self.mode:
             return self._is_triple_quoted_string
         return bool(self) and is_docstring(self.leaves[0], self.mode)
 
diff --git a/src/black/mode.py b/src/black/mode.py
index 55bface6365..6600f9dad75 100644
--- a/src/black/mode.py
+++ b/src/black/mode.py
@@ -195,7 +195,7 @@ class Preview(Enum):
     single_line_format_skip_with_multiple_comments = auto()
     long_case_block_line_splitting = auto()
     allow_form_feeds = auto()
-    format_module_docstring = auto()
+    unify_docstring_detection = auto()
 
 
 class Deprecated(UserWarning):
diff --git a/src/black/nodes.py b/src/black/nodes.py
index a9505db9b07..4f7a88e6ace 100644
--- a/src/black/nodes.py
+++ b/src/black/nodes.py
@@ -540,7 +540,7 @@ def is_docstring(leaf: Leaf, mode: Mode) -> bool:
         return False
 
     if (
-        Preview.format_module_docstring in mode
+        Preview.unify_docstring_detection in mode
         and leaf.parent
         and leaf.parent.type == syms.simple_stmt
         and not leaf.parent.prev_sibling
diff --git a/tests/data/cases/preview_no_blank_line_before_docstring.py b/tests/data/cases/preview_no_blank_line_before_docstring.py
index 303035a7efb..faeaa1e46e4 100644
--- a/tests/data/cases/preview_no_blank_line_before_docstring.py
+++ b/tests/data/cases/preview_no_blank_line_before_docstring.py
@@ -29,6 +29,9 @@ class MultilineDocstringsAsWell:
     and on so many lines...
     """
 
+class SingleQuotedDocstring:
+
+    "I'm a docstring but I don't even get triple quotes."
 
 # output
 
@@ -57,3 +60,7 @@ class MultilineDocstringsAsWell:
 
     and on so many lines...
     """
+
+
+class SingleQuotedDocstring:
+    "I'm a docstring but I don't even get triple quotes."