Mismatches for methods registered for non-generic:

? Mon, 27 May 2024 10:52:26 +0000
"Koenker, Roger W" <rkoenker at illinois.edu> ?????:

that have been fine until now and on my fresh R version 4.4.0
(2024-04-24) are still ok with R CMD check ?as-cran

This extra check requires the environment variable
_R_CHECK_S3_METHODS_SHOW_POSSIBLE_ISSUES_ to be set to TRUE to show the
issues.

but CRAN checking reveals, e.g.

Check: S3 generic/method consistency, Result: NOTE
 Mismatches for methods registered for non-generic:
 as:
   function(object, Class, strict, ext)
 as.matrix.coo:
   function(x, nrow, ncol, eps, ?)

which I interpret as regarding  my generics as just S3 methods for
the non-generic ?as?.

There are calls to S3method("as", ...) and S3method("is", ...) at the
end of the NAMESPACE for the current CRAN version of SparseM. If I
comment them out, the package passes R CMD check --as-cran without the
NOTE and seemingly with no extra problems.

Best regards,
Ivan