Hi everyone, With Org 9.6 released yesterday, I noticed a bug with ob-R: all R code blocks with ":results output :session *R*" in the header will return no output at all (although the code is correctly processed in the inferior ESS buffer).
Steps to follow to reproduce the issue: 1. Create a minimal init.el file with this content (adapting paths if needed): (add-to-list 'load-path "~/.emacs.d/elpa/org-9.6/") (require 'org) (add-to-list 'load-path "~/.emacs.d/elpa/ess-20221124.756/") (require 'ess-site) (org-babel-do-load-languages 'org-babel-load-languages '((org . t) (R . t))) 2. Open emacs -Q -l init.el 3. Create an Org document with this content: #+begin_src R :results output :session *R* x <- 2:4 print(x) #+end_src 4. Try to evaluate the R code block: you'll only get an empty output. Note that external eval (i.e., without the :session arg) still works as expected, and that other results types (e.g., :results value) still work as well. Bug confirmed by other ESS users on the mailing list: https://stat.ethz.ch/pipermail/ess-help/2022-November/013162.html Version info: ============ Emacs : GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.34, cairo version 1.17.6) of 2022-09-12 Org : Org mode version 9.6 ( @ /home/fsantos/.emacs.d/elpa/org-9.6/) ESS : ess-version: 18.10.3snapshot [elpa: 20221124.756]