Generates .Rd files with line length >80 in some cases

[multimeric]

This can be a problem because the resulting .Rd files will fail various automated linting processes, most notably BiocCheck::BiocCheck(), which checks for a <= 80 line length, including .Rd files.

I have created a repository that captures a minimal example of this: https://github.com/multimeric/RoxygenLineLength. This repository already has R source files and the resulting .Rd docs produced from them, but you can also regenerate the .Rd using roxygen2::roxygenise() if you clone the repository.

The two cases I can consistently identify that trigger this are:

• A title section with a line length very close to 80: https://github.com/multimeric/RoxygenLineLength/blob/835a32205c9c01c7b954e6680daff9daf8ec30af/R/doc.R#L8. This seems to happen because Roxygen2 formats title as:

  \title{content}
  

  Instead of the following format that it uses for other fields, which is immune to excessive line lengths if the source documentation is also <80 chars:

  \title{
  content
  }
  

• Basically any use of inheritDotParams: https://github.com/multimeric/RoxygenLineLength/blob/835a32205c9c01c7b954e6680daff9daf8ec30af/R/doc.R#L10

[hadley]

I'll keep this open, but the chances of us fixing in the near future are low.

[hadley]

Now closing because we've made no progress on this and it doesn't seem to affect many people.