[Zope] manage_changeProperties has strange side effect on response Content-Type.

This gave me such a headache today, that I thought I ought to mention it. All my pages normally have a content-type of ISO-8859-1 I have not spent much thought on this, it has just worked nicely like that. Today I had a page that called a python script, that even when I made it return an empty string, changed the content-type of my page to utf-8. I finally tracked it down to this difference: item.manage_changeProperties({'title':'Hustype'}) gives utf-8. item.manage_changeProperties(title='Hustype') leaves ISO-8859-1 intact. WTF is that? Now you have been warned :) Regards Gaute Amundsen