<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Noel Welsh wrote at 12/23/2010 10:27 AM: <blockquote cite="mid:AANLkTinM__bmQockLX2J8zXfCKKT58oA_+GCpXVMyC3L@mail.gmail.com" type="cite"> <blockquote type="cite"> <pre wrap="">* What about in an attribute list context?  It's the same problem as with element content context, but you can't add an HTML parent element to kludge a splice of multiple attributes. </pre> </blockquote> <pre wrap=""> In Lift you'd match on the enclosing tag and then replace the attributes you were interested in while keeping others the same. </pre> </blockquote> Sounds like mutable, or copying the entire tree for a transform?  I'm trying to avoid mutable objects, for the usual reasons, and copying can be expensive as the XML/HTML gets large and you're, say, trying to serve many requests at once. <blockquote cite="mid:AANLkTinM__bmQockLX2J8zXfCKKT58oA_+GCpXVMyC3L@mail.gmail.com" type="cite"> <pre wrap="">I think the Lift guys would agree this is a web specific solution. </pre> </blockquote> HTML-specific?  I have a Racket-based Web app in production that does lots of non-HTML XML on the server side -- for serving and using Web services, in multiple XML applications (not just SOAP-based).  XML is often part of doing Web development.  There were actually times in the last couple years that I found that I needed to do something in XML, and my pertinent XML tools were not as good as my HTML-specific tools, so I'm trying to avoid that situation again. Thanks, I will look into this Lift thing, to see how our stuff compares and what we can learn from them. <div class="moz-signature">-- <a class="moz-txt-link-freetext" href="http://www.neilvandyke.org/">http://www.neilvandyke.org/</a> </div> </body> </html>