From 06eac466f0c3d477dfc817fa9e3a27bf90916998 Mon Sep 17 00:00:00 2001
From: hauntsaninja <hauntsaninja@gmail.com>
Date: Thu, 28 Dec 2023 17:43:44 -0600
Subject: [PATCH 1/3] Remove empty lines before docstrings in async functions

---
 src/black/lines.py                            |  8 +-------
 src/black/nodes.py                            |  4 ----
 .../cases/preview_allow_empty_first_line.py   | 20 +++++++++++++++++++
 3 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/src/black/lines.py b/src/black/lines.py
index 8d02267a85b..334713bf7b2 100644
--- a/src/black/lines.py
+++ b/src/black/lines.py
@@ -24,7 +24,6 @@
     TEST_DESCENDANTS,
     child_towards,
     is_docstring,
-    is_funcdef,
     is_import,
     is_multiline_string,
     is_one_sequence_between,
@@ -709,12 +708,7 @@ def _maybe_empty_lines(self, current_line: Line) -> Tuple[int, int]:
             Preview.allow_empty_first_line_in_block in current_line.mode
             and (
                 not is_docstring(current_line.leaves[0], current_line.mode)
-                or (
-                    self.previous_line
-                    and self.previous_line.leaves[0]
-                    and self.previous_line.leaves[0].parent
-                    and not is_funcdef(self.previous_line.leaves[0].parent)
-                )
+                or (self.previous_line and not self.previous_line.is_def)
             )
         )
 
diff --git a/src/black/nodes.py b/src/black/nodes.py
index 8e0f27e3ded..d45d40c01c2 100644
--- a/src/black/nodes.py
+++ b/src/black/nodes.py
@@ -742,10 +742,6 @@ def is_multiline_string(leaf: Leaf) -> bool:
     return has_triple_quotes(leaf.value) and "\n" in leaf.value
 
 
-def is_funcdef(node: Node) -> bool:
-    return node.type == syms.funcdef
-
-
 def is_function_or_class(node: Node) -> bool:
     return node.type in {syms.funcdef, syms.classdef, syms.async_funcdef}
 
diff --git a/tests/data/cases/preview_allow_empty_first_line.py b/tests/data/cases/preview_allow_empty_first_line.py
index 3e14fa15250..97539d133fe 100644
--- a/tests/data/cases/preview_allow_empty_first_line.py
+++ b/tests/data/cases/preview_allow_empty_first_line.py
@@ -62,6 +62,17 @@ def method(self):
 
         pass
 
+
+async def async_fn():
+
+    """Docstring."""
+
+
+@decorated
+async def async_fn():
+
+    """Docstring."""
+
 # output
 
 def foo():
@@ -126,3 +137,12 @@ class Cls:
     def method(self):
 
         pass
+
+
+async def async_fn():
+    """Docstring."""
+
+
+@decorated
+async def async_fn():
+    """Docstring."""

From e696b366bb0679f5923a3995d8d055603c56eb5a Mon Sep 17 00:00:00 2001
From: hauntsaninja <hauntsaninja@gmail.com>
Date: Thu, 28 Dec 2023 17:47:20 -0600
Subject: [PATCH 2/3] changes

---
 CHANGES.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGES.md b/CHANGES.md
index a6587cc5ceb..3e17e7304bd 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -17,6 +17,7 @@
 - Format module docstrings the same as class and function docstrings (#4095)
 - Fix bug where spaces were not added around parenthesized walruses in subscripts,
   unlike other binary operators (#4109)
+- Remove empty lines before docstrings in async functions (#4132)
 
 ### Configuration
 

From fad3df26ca7481b68ebce7bcbf72958e04af2dc5 Mon Sep 17 00:00:00 2001
From: hauntsaninja <hauntsaninja@gmail.com>
Date: Thu, 28 Dec 2023 19:05:00 -0600
Subject: [PATCH 3/3] use a property

---
 src/black/lines.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/black/lines.py b/src/black/lines.py
index 334713bf7b2..e86185c2279 100644
--- a/src/black/lines.py
+++ b/src/black/lines.py
@@ -707,7 +707,7 @@ def _maybe_empty_lines(self, current_line: Line) -> Tuple[int, int]:
         is_empty_first_line_ok = (
             Preview.allow_empty_first_line_in_block in current_line.mode
             and (
-                not is_docstring(current_line.leaves[0], current_line.mode)
+                not current_line.is_docstring
                 or (self.previous_line and not self.previous_line.is_def)
             )
         )