Hi, I would like to ask some advice. For my Origami[1] library I'm exploring different ways of providing more powerful selectors for nodes in a template document. As this is for a templating library I would like to offer string based selectors and am considering if I should go for CSS-style selectors or XPath selectors. I started on CSS selectors to be able to select nodes with selectors like "p#id" and "li.class" but to do this properly it involves quite a bit of string manipulation in order to support more advanced stuff. Being in a language that already has XPath in it, it would be much more natural and powerful to use XPath selectors. This led me to look at xquery:eval. So far I resisted using eval but the code is a lot simpler that way. Implementing CSS-style selectors would probably lead me down a path with a lot more ugly string manipulation. I'm aware that it's better to express these things in XQuery code and that is also possible. But it's so much nicer to read this: xf:extract(xf:select('li'), $doc) then this: xf:extract(function($node) { $node/li }, $doc) I'm interested in pros and cons of using xquery:eval with XPath string-selectors. How is the performance? Other downsides (such as being non-standard)? Thanks --Marc [1] https://github.com/xokomola/origami