I don't think handlers should be functions in the package. The main reason is that a package might want to use its own handlers. e.g. package foo defines attrbute foo::bar to handle code generation. Chances are foo is the main client of the bar attribute handler.
Perhaps a handler is a file in a specific directory of a package e.g. inst/attributes/bar.R
When we know more, it will become clear what should be in the bar.R file.
I don't think handlers should be functions in the package. The main reason is that a package might want to use its own handlers. e.g. package
foodefines attrbutefoo::barto handle code generation. Chances arefoois the main client of thebarattribute handler.Perhaps a handler is a file in a specific directory of a package e.g.
inst/attributes/bar.RWhen we know more, it will become clear what should be in the
bar.Rfile.