search for: avoid_string_appends_1

Hi, w.r.t. http://trac.xapian.org/ticket/326 I'd like to try out some of the patches mentioned against my xapian svn trunk to see what kind of improvement can be realised. There are quite a few patches, so can I simply try them all top-to-bottom, or which of them are recommended (ie, I don't want to screw with the index format)? Thanks h