XML directory and extension structure in PHP5opt

Hi i'd like to discuss the future directory structure and extension naming scheme in PHP5. As some people are currently rewriting domxml and expat, I think, it's about time to come up with some decent scheme. As a lot of the XML Support in PHP5 will be based on libxml2, it would make sense to base those extensions on some common stuff. My proposal is (and I didn't really think it through, maybe there are some holes in it) We put all libxml2 based extension in subdirectories of ext/xml -> ext/xml/dom ext/xml/sax ext/xml/xslt ext/xml/schema ext/xml/xpath etc... in ext/xml there are some common used functions (a lot of those extensions need access to DomDocument and associated classes and the whole memory management). configure would then take the options: --enable-xml-dom --enable-xml-sax or even --enable-xml-all The naming scheme could then be: xml_dom_foobar xml_xpath_foobar as most presumably all xml extensions will have a OO-Interface, it doesn't really matter, if the names get a little bit long this way. The current ext/xml function (xml_parser, xml_set_...handler, etc) could be kept for BC reasons (ext/xml is available for a too long time to just get rid of those functions). Opinions? other Suggestions? chregu