Issue #23883: Add missing APIs to __all__; patch by Jacek KoƂodziej
diff --git a/Lib/csv.py b/Lib/csv.py
index ca40e5e..90461db 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -13,11 +13,12 @@
 
 from io import StringIO
 
-__all__ = [ "QUOTE_MINIMAL", "QUOTE_ALL", "QUOTE_NONNUMERIC", "QUOTE_NONE",
-            "Error", "Dialect", "__doc__", "excel", "excel_tab",
-            "field_size_limit", "reader", "writer",
-            "register_dialect", "get_dialect", "list_dialects", "Sniffer",
-            "unregister_dialect", "__version__", "DictReader", "DictWriter" ]
+__all__ = ["QUOTE_MINIMAL", "QUOTE_ALL", "QUOTE_NONNUMERIC", "QUOTE_NONE",
+           "Error", "Dialect", "__doc__", "excel", "excel_tab",
+           "field_size_limit", "reader", "writer",
+           "register_dialect", "get_dialect", "list_dialects", "Sniffer",
+           "unregister_dialect", "__version__", "DictReader", "DictWriter",
+           "unix_dialect"]
 
 class Dialect:
     """Describe a CSV dialect.