The double colon :: can be confusing here, but the R-exts manual is
actually correct. :: does not imply anything about the package
namespace; it is merely a separator. The vignette engines are written
in the form package::engine, and the engine name _happens_ to be
"knitr" as well in this case.
>
In Section 1.4.2 of "Writing R Extensions"
%\VignetteEngine{knitr::knitr}
should be
%\VignetteEngine{knitr::knit}
> sessionInfo()
R version 3.0.2 (2013-09-25)
Platform: x86_64-apple-darwin10.8.0 (64-bit)
Is this sort of thing best reported here, or is a huge report in order?
John Maind
