> -----Original Message----- > From: Charles C. Berry [mailto:ccbe...@ucsd.edu] > Sent: Saturday, November 07, 2015 6:33 PM > To: Cook, Malcolm <m...@stowers.org> > Cc: emacs-orgmode@gnu.org > Subject: Re: BUG: emacs orgmode ob-R.el function org-babel-R-evaluate- > session over aggressively performs "; ; cleanup extra prompts left in output" > and a possible workaround > > On Sat, 7 Nov 2015, Cook, Malcolm wrote: > > > Thanks Chuck for setting this through. > > > [...] > > > > I've wondered if there is not a better way for Babel to share an > > interactive session with the user. For instance, if we wanted to > > support a new form of results processing on addition to value and > > output.... Namely, "transcript", wherein the results of evaluating a > > source block would be a transcript of the season with statements > > interwoven with their respective outputs.... I suspect that this would > > not be easy extension of the current approach since it would require > > parsing the source into statements that get evaluated sequentially with > > visible results echoed into the transcript. > > You can do stuff like this using babel and some R code. > > Here is a start: > > --8<---------------cut here---------------start------------->8--- > #+NAME: my-block > #+BEGIN_SRC R :eval no > ls() > a <- 1 > sqrt(a+2) > ls() > #+END_SRC > > > #+BEGIN_SRC R :session :noweb yes :results value raw :wrap example > capture.output( > source(textConnection(" > <<my-block>> > "), > echo=T,print=T)) > #+END_SRC > > #+RESULTS: > #+BEGIN_example > > > ls() > [1] "a" > > > a <- 1 > > > sqrt(a+2) > [1] 1.732051 > > > ls() > [1] "a" > #+END_example > > > --8<---------------cut here---------------end--------------->8--- > > I suppose you would want `:exports results'.
Hi Chuck, Sourcing a textConnection on a :noweb interpolated block will not handle embedded quotes in the source block correctly. Adding an assignment of a string to a variable in my-block reveals this (i.e. `b<-"asdf"`) Nor does it extend to my underspecified conception of what :transcript output would be. I intended that :transcript would generate a colorized source blocks separated by results for statements which generated visible results. You implementation makes the source and results undifferentiated. My mistake for underspecifying my intention. I think I might be able to cobble what I want using the 'evaluate' package (https://cran.rstudio.com/web/packages/evaluate/evaluate.pdf) with an output handler to format source as an R code block and results as R results block. Probably not worth the effort. Or rather, probably already done within the knitr/rmarkdown. Thanks, Malcolm > > Best, > Chuck
