Update 2.7 docs about legal characters allowed in Cookie name

diff --git a/Doc/library/cookie.rst b/Doc/library/cookie.rst
index 480dffa66e620c519048d76327935ef371db29ef..52c897579d169496dc9f41b901caea7738be4889 100644 (file)
--- a/Doc/library/cookie.rst
+++ b/Doc/library/cookie.rst
@@ -22,8 +22,14 @@ cookie value.
 
 The module formerly strictly applied the parsing rules described in the
 :rfc:`2109` and :rfc:`2068` specifications.  It has since been discovered that
-MSIE 3.0x doesn't follow the character rules outlined in those specs.  As a
-result, the parsing rules used are a bit less strict.
+MSIE 3.0x doesn't follow the character rules outlined in those specs and also
+many current day browsers and servers have relaxed parsing rules when comes to
+Cookie handling.  As a result, the parsing rules used are a bit less strict.
+
+The character set, :data:`string.ascii_letters`, :data:`string.digits` and
+``!#$%&'*+-.^_`|~`` denote the set of valid characters allowed by this module
+in Cookie name (as :attr:`~Morsel.key`).
+
 
 .. note::