yihui/knitr — pull request #605 by krlmlr (2013-09-18 09:53:39+00:00)
Title: also check against R-devel from Michael Rutter's PPA

With this patch, after successful run of `make check`, R is upgraded to R-devel and the check is re-run. I'm not sure if it's necessary to reinstall the package for this, it's not done currently.