After many years using Sweave, I have switched to knitr.  See
http://yihui.github.com/knitr/ for an overview of the package.

Is it worth evaluating the possibility of replacing some of the hard-coded
use of "Sweave" in the 'ess-*" functions with a variable that could accept
other functions like "knit"?  There may be others (pgfSweave???).

Alternatively, it might be simpler to just create new functions like
"ess-swv-knit".

I don't know enough of the architecture of the relevant R/lisp code to
suggest a best approach.

-- 
Kevin Wright

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