I'm getting an R CMD check warning with a package (call it package A) that defines an S3 method but not the generic. The generic is defined in another package (package B). Package A imports the S3 generic from B. And there's one additional detail: the generic overrides a function in the stats package.
I've created a minimal test package which reproduces the problem: https://github.com/wch/s3methodtest In this case: - the package imports dplyr, for the dplyr::filter S3 generic - the package defines a S3 method filter.test - it imports dplyr, which defines a filter S3 generic The warning doesn't occur when package dplyr is in Depends instead of Imports. It also doesn't occur if the method is for a generic that does not override an existing function like stats::filter. For example, if instead of filter.test, I define select.test (dplyr::select is also an S3 generic), then there's no warning. This warning seems incorrect. Is this a bug? I'm interested in submitting the package to CRAN soon, so any advice on what to do is appreciated. Thanks, -Winston ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
