I've got a few modifications to the current mapping system I'm working on, possibly a new system, hard to tell. We'll see how it goes, I suppose. Long story short though, one of the important aspects of it involves pulling information from the xml files IRE MUDs store their maps in. For now, I'm working with the LuaXML library, and it does work, but I'm not very satisfied with how it tables the documents, how it handles attributes, the usage of the __tostring metamethod (that one's just annoying for me, not important in the long run), etc.
Given the above, has anyone here found any better luck with other implementations of XML parsing, and if so what are they? Any gotchas to be aware of in making the switch? I'd prefer to be able to distribute this to users on all OSes without limit, so libraries which make that easy are always preferred.