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small documentation update to outline caveat with SESSION_COOKIE_DOMAIN

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1 parent 9d6ecc6 commit ae8fcedbc7694010490ac2b365b397e8e2e39b44 @ryanisnan ryanisnan committed Mar 19, 2013
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  1. +6 −0 docs/ref/settings.txt
@@ -2287,6 +2287,12 @@ The domain to use for session cookies. Set this to a string such as
``""`` (note the leading dot!) for cross-domain cookies, or use
``None`` for a standard domain cookie.
+Be cautious when updating this setting on a production site. If you update
+this setting to enable cross-domain cookies on a site that previously used
+standard domain cookies, existing user cookies will be set to the old
+domain. This may result in them being unable to log in as long as these cookies

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