My wish for TempFile is fulfilled.

diff --git a/Lib/cgi.py b/Lib/cgi.py
index 6f76cb5c241ee026e3624462272d37a2445186c0..4cf960929950668f4cb0497d9888f496f683216e 100755 (executable)
--- a/Lib/cgi.py
+++ b/Lib/cgi.py
@@ -776,7 +776,7 @@ class FieldStorage:
 
         """
         import tempfile
-        return tempfile.TemporaryFile("w+")
+        return tempfile.TemporaryFile("w+", encoding="utf-8", newline="\n")