Hi again! Based on the discussion I modified my proposal: - Products.Five.browser.decode should be marked as deprecated. It implements charset negotiation without making sure the 'Vary' header is set correctly. Fixing this will cause other caching issues. - The setPageEncoding() function will not be replaced at all. We just rely on HTTPResponse.setBody() if the 'Content-Type' header is not set explicitly by the view. It is recommended to set default-zpublisher-encoding to utf-8. This is how plone.z3cform currently handles this. - The processInputs() function is replaced by a HTTPRequest method called postProcessInputs(). This method first tries to decode with HTTPRequest.default_encoding. If that causes failures, it falls back to the encodings returned by getPreferredCharsets(). - Directly after traversal ZPublisher.Publish.publish() calls request.postProcessInputs() if the object implements zope.publisher.interfaces.browser.IBrowserPage. If there are no objections I'll implement it that way on Zope trunk. Cheers, Yuppie