Use case I want to add fragement identifier like #xyz to a link and don't want to reload the page and preserve the query strings when I click on it. Example address: <https://www.example.com/foo/bar?x=y> Why it doesn't work by default By default, if I click on an anchor with '#xyz' a regular UA computes https://www.example.com/foo/#xyz because Zope adds a <base> tag to generated pages. This little python script might help to get the "real" location, but I'm not sure if it will work in all different setups and Zope versions: request = context.REQUEST server_url = request.get('SERVER_URL') path_info = request.environ.get('PATH_INFO') path_info = path_info.split('VirtualHostRoot')[-1] query_string = request.get('QUERY_STRING') if query_string: query_string = '?%s' % query_string location = server_url + path_info + query_string return location My questions Is 'PATH_INFO' always available? Is there something else I should consider? Thanks. Tonico