Hello,

With the following patch the link to graphics output is finally back on
with R source code. Note that on top of the "graphics" parameter the
"file" parameter have to be used for the org-link to work out of the
box. I will try to remove the need for a second "file" parameter in the
future. 



#+begin_src R :results output graphics file  :file test2.pdf :session *local* :cache no :dir "~/Documents/images"
plot(rnorm(100))
#+end_src

#+RESULTS:
[[file:images/test2.pdf]]

The link also works for R remote sessions. Comments are welcome.  The
next steps

- Remove second the need for a second file parameter
- Add tests to avoid regression
- implement async in ob-R