Even after PR #1435, `compiler-options.yml` still contains data for Scala 2.12. One example is `-Xfuture`. https://github.com/scala/docs.scala-lang/blob/8625f61f082e3a1d58ca050668d92bf2a0fdc4e1/_data/compiler-options.yml#L300-L303 [But in Scala 2.13](https://github.com/scala/scala/blob/63f89ba721034027a091663d226cd54915bac65f/src/compiler/scala/tools/nsc/settings/ScalaSettings.scala#L484-L486), `-Xfuture`'s description is `Replaced by -Xsource.`.