[Rd] Control statements with condition with greater than one should give error (not just warning) [PATCH]

Henrik Bengtsson henrik.bengtsson at gmail.com
Fri Mar 3 19:10:53 CET 2017

On Fri, Mar 3, 2017 at 9:55 AM, Hadley Wickham <h.wickham at gmail.com> wrote:
>> But, how you propose a warning-to-error transition should be made
>> without wreaking havoc?  Just flip the switch in R-devel and see CRAN
>> and Bioconductor packages break overnight?  Particularly Bioconductor
>> devel might become non-functional (since at times it requires
>> R-devel).  For my own code / packages, I would be able to handle such
>> a change, but I'm completely out of control if one of the package I'm
>> depending on does not provide a quick fix (with the only option to
>> remove package tests for those dependencies).
> Generally, a package can not be on CRAN if it has any warnings, so I
> don't think this change would have any impact on CRAN packages.  Isn't
> this also true for bioconductor?

Having a tests/warn.R file with:


passes through R CMD check --as-cran unnoticed.  Same with:

if (sample(2) == 1) message("It's your lucky day today!")


PS. Does testthat signal that?

> Hadley
> --
> http://hadley.nz

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