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"Note: Parameters on the application/x-www-form-urlencoded MIME type are ignored. In particular, this MIME type does not support the charset parameter." I do agree that there is no charset param on this media type. However, it seems that UAs routinely ignore this and send a charset parameter anyway. I would be good to find out whether this behavior can be eliminated from implementations. If this is not the case, it might be good to explain why UAs still send the charset parameter (and under which circumstances).
EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the Editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the Tracker Issue; or you may create a Tracker Issue yourself, if you are able to do so. For more details, see this document: http://dev.w3.org/html5/decision-policy/decision-policy.html Status: Additional Information Needed Change Description: No change. Rationale: Needs input from implementors.