#8016: add the CP858 codec (approved by Benjamin).  (Also add CP720 to the tests, it was missing there.)
diff --git a/Lib/encodings/aliases.py b/Lib/encodings/aliases.py
index 992eef4..a54cf77 100644
--- a/Lib/encodings/aliases.py
+++ b/Lib/encodings/aliases.py
@@ -146,6 +146,11 @@
     'csibm857'           : 'cp857',
     'ibm857'             : 'cp857',
 
+    # cp858 codec
+    '858'                : 'cp858',
+    'csibm858'           : 'cp858',
+    'ibm858'             : 'cp858',
+
     # cp860 codec
     '860'                : 'cp860',
     'csibm860'           : 'cp860',