[Rd] Should '@" now be listed in tools:::.get_internal_S3_generics() ?

[Karolis Koncevičius]

This issue might go deeper - I was not successful in passing R CMD checks for the usage files. R CMD check kept showing errors for `@` declarations, even thou they were identical to `$` declarations (which passed fine).

Seems like the usage check functions are not prepared for `@` - also in tools:::.S3_method_markup_regexp

> On Apr 28, 2023, at 10:34 PM, Karolis Koncevičius <karolis.koncevicius using gmail.com> wrote:
> 
> I was building a package that uses the new generic @ and kept having errors with “roxygen2” documentation. “roxygen2” generated NAMESPACE added `@.newclass` as a newly exported function, not as a S3method.
> 
> At first I thought this must be a bug in roxygen2 and they lag behind the new developments in R. But after some investigation I found that “roxygen2” is using tools:::.get_internal_S3_generis() to decide if the method should be exported as S3method or not. For some reason “@<-“ is listed in there, but “@“ is not.
> 
> Am I missing some context, or is this an oversight?
> 
> Kind regards,
> Karolis Koncevicius