Issue #11957: Explicit parameter name when calling re.split() and re.sub()
diff --git a/Lib/http/cookiejar.py b/Lib/http/cookiejar.py
index d563350..4135ebf 100644
--- a/Lib/http/cookiejar.py
+++ b/Lib/http/cookiejar.py
@@ -478,7 +478,7 @@
             if "=" not in param:
                 k, v = param, None
             else:
-                k, v = re.split(r"\s*=\s*", param, 1)
+                k, v = re.split(r"\s*=\s*", param, maxsplit=1)
                 k = k.lstrip()
             if ii != 0:
                 lc = k.lower()