[O] Bug: R source block list export not working properly [7.8.11]

[Greg Tucker-Kellogg]

I reported this on the mailing list as a question, but it appears to be an
actual bug, so I thought I should file it formally.  The following MWE
shows the problem when trying to export an R character vector:

#+begin_src R :exports results :results value list
c("x","y","z")
#+end_src

#+RESULTS:
- ("x")
- ("y")
- ("z")

This is clearly not what is wanted, more or less ever.  What works,
instead, requires R manipulation of the results, of the form:

#+BEGIN_SRC R :exports results :results output raw
a <- c("x","y","z")
cat(paste("-", a), sep="\n")
#+END_SRC

#+RESULTS:
- x
- y
- z


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