​
On 6 August 2014 03:35, Charles Berry <ccberry@ucsd.edu> wrote:
​[snip]​

> org-babel-R-evaluate-session uses
>
>  (string-match "^\\([ ]*[>+\\.][ ]?\\)+\\([[0-9]+\\|[ ]\\)" line)
>
> to find the start of R output in the session.
>
> This does not match the `          0', but matches the `         .6'
> in the output you show above, so if that had been in a session, all the
> output up to and including the '.' before the '6' would be clipped
> by the following
>
>   (substring line (match-end 1))
>
>
> as Andreas output showed.
>
> Deleting the "\\." fixes Andreas case, but what are the circumstances
> requiring the  "\\." ?
>

​
​
Thanks Charles for finding this.

I do use R quite a bit, and I can only think of ">
​ ​
" (at beginning of the line) as the command prompt, along with "+
​ ​
" (at beginning of the line) as a continuation prompt for multi-line
commands. I don't know what
 ​ ​
"\" or
​ ​
"." provide
​ (I don't think this has changed over the various R versions)​

​.

​A ​
complication might be that the user can change the command prompt (and
continuation prompt) to something else they like (
 ​see here: ​
http://cran.r-project.org/doc/manuals/r-release/R-intro.html#Customizing-the-environment
 ​)​.

​For the time being I've taken the "\\." out of my local version of ob-R.el
(then byte compiled and loaded) and it seems to work fine.

​Maybe this is a question for the ESS developers who use R extensively and
probably might be able to provide some more definitive guidance on this
than I can?

​Thanks,

Andreas​