X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/d10b56e6f797878b7c76d69777f25907beb4cddd..53808e390294d717d69c71044527890d4ab7452e:/black.py

diff --git a/black.py b/black.py
index ada9b0e..5b2e017 100644
--- a/black.py
+++ b/black.py
@@ -2601,9 +2601,11 @@ def bracket_split_build_line(
             # Since body is a new indent level, remove spurious leading whitespace.
             normalize_prefix(leaves[0], inside_brackets=True)
             # Ensure a trailing comma for imports and standalone function arguments, but
-            # be careful not to add one after any comments.
-            no_commas = original.is_def and not any(
-                l.type == token.COMMA for l in leaves
+            # be careful not to add one after any comments or within type annotations.
+            no_commas = (
+                original.is_def
+                and opening_bracket.value == "("
+                and not any(l.type == token.COMMA for l in leaves)
             )
 
             if original.is_import or no_commas: