X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/b073c9a4e956f0e350394b7b164cac25801256d7..90d205d1f50d4f801b3b3de3c40590eece10c4cd:/black.py

diff --git a/black.py b/black.py
index 779e9d0..952fb0c 100644
--- a/black.py
+++ b/black.py
@@ -1,5 +1,6 @@
 import asyncio
 from concurrent.futures import Executor, ProcessPoolExecutor
+from contextlib import contextmanager
 from datetime import datetime
 from enum import Enum
 from functools import lru_cache, partial, wraps
@@ -523,6 +524,7 @@ def reformat_many(
         )
     finally:
         shutdown(loop)
+        executor.shutdown()
 
 
 async def schedule_formatting(
@@ -628,9 +630,8 @@ def format_file_in_place(
         src_name = f"{src}\t{then} +0000"
         dst_name = f"{src}\t{now} +0000"
         diff_contents = diff(src_contents, dst_contents, src_name, dst_name)
-        if lock:
-            lock.acquire()
-        try:
+
+        with lock or nullcontext():
             f = io.TextIOWrapper(
                 sys.stdout.buffer,
                 encoding=encoding,
@@ -639,9 +640,7 @@ def format_file_in_place(
             )
             f.write(diff_contents)
             f.detach()
-        finally:
-            if lock:
-                lock.release()
+
     return True
 
 
@@ -3152,7 +3151,7 @@ def ensure_visible(leaf: Leaf) -> None:
     """Make sure parentheses are visible.
 
     They could be invisible as part of some statements (see
-    :func:`normalize_invible_parens` and :func:`visit_import_from`).
+    :func:`normalize_invisible_parens` and :func:`visit_import_from`).
     """
     if leaf.type == token.LPAR:
         leaf.value = "("
@@ -3593,6 +3592,13 @@ def dump_to_file(*output: str) -> str:
     return f.name
 
 
+@contextmanager
+def nullcontext() -> Iterator[None]:
+    """Return context manager that does nothing.
+    Similar to `nullcontext` from python 3.7"""
+    yield
+
+
 def diff(a: str, b: str, a_name: str, b_name: str) -> str:
     """Return a unified diff string between strings `a` and `b`."""
     import difflib