I've been running the R daily news feeds (http://developer.r-project.org/RSSfeeds.html) using some Java code called from R to compute and display differences in the NEWS.Rd file from day to day. (The code was taken from http://code.google.com/p/google-diff-match-patch/). Using Java has meant that the process is somewhat fragile and hard to debug, and I'd like to switch to pure R code (or at least self-contained code in a package). Does anyone know of an R package that provides text differencing and display in HTML? Duncan Murdoch