I often use Sagemath within Org mode for my math notes, using the ob-sagemath package. Sage can provide an interface to many underlying interpreters, like GAP or Maxima, and I just figured out how to access these environments for single lines using `%` magic methods. So for example if I now need to run a single line in a PARI/GP interpreter from an org file, I can type:
#+begin_src sage %gp primepi(666) #+end_src and get the result in my org buffer. I would like to have the ability to do something similar with multiline scripts, since Sage also provides interfaces for multiple lines via `%%` methods. When I try to use e.g. the one for R I get `UsageError: Line magic function `%%R` not found.` I unfortunately don't yet know enough elisp to get ob-sagemath to do this, so I'd appreciate any help getting these magic methods to work, or finding alternatives. Such an extension would let Babel support dozens more languages and programs without needing more packages, so I think this could be a valuable addition for many other Emacs users as well.
