Dear R developers, As far as I can see R CMD CHECK --run-donttest does not test the \donttest examples. By contrast, --run-dontrun appears to run the \dontrun examples as expected. I have prepared a minimal package archive for illustrating this bug, which I can send to anyone interested (but I am not sure it is appropriate to attach it to this mail). I have formally tested this problem on ============================>sessionInfo()R Under development (unstable) (2014-11-06 r66943) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=French_France.1252 LC_CTYPE=French_France.1252 LC_MONETARY=French_France.1252 LC_NUMERIC=C LC_TIME=French_France.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] tools_3.2.0 ============================ F.R. [[alternative HTML version deleted]]