I sent mail to displaytag-devel a few days ago asking if anyone was working on expression support for displaytag. Since nobody replied, I went ahead and implemented it. I'm attaching the source. Instead of patching displaytag, I just subclassed a couple things, but these changes could easily go back into the main source if someone feels so inclined. Enjoy.
--Tim
dt.tar.gz
Description: application/compressed-tar