jorge.alfaro-murillo@yale.edu (Jorge A. Alfaro-Murillo) writes: > Rainer M Krug writes: > >> Eric S Fraga writes: >> >>> On Monday, 21 Sep 2015 at 14:46, Rainer M Krug wrote: >>> >>> [...] >>> >>>> Is it possible to set a timestamp (ur update it when it exists >>>> already) when a code block has been evaluated, so that I have e >>>> record when it was updated? >>> >>> Could you make use of the :post header argument to invoke emacs >>> lisp and execute org-time-stamp-inactive in some way? >> >> Thanks - sounds possible? But if I just use >> >> ,---- | :post (org-time-stamp-inactive) `---- >> >> 1) an input is required and 2) the time stamp is inserted before the >> #+begin_src and makes the block invalid. >> >> How can I put the time stamp in the line after the #+end_src or >> possibly even in the same line, as this does not seem to have an >> impact on the source block? > > You could use the :epilogue header argument. Since you want after the > #+end_src this is rather hackish: > > :epilogue (save-excursion (re-search-forward "END_SRC" nil nil 2) > (org-insert-time-stamp (current-time) t t "\nEvaluated: " "\n")) > > It does not update the results, but it will show you all the results > and when they were evaluated. > > If you want to keep only one set of results and do not mind having the > timestamp before the #+BEGIN_SRC, you could use something like: > > :epilogue (save-excursion (if (re-search-backward "Last evaluated: " > nil t) (kill-line 1)) (org-insert-time-stamp (current-time) t t "Last > evaluated: " "\n")) The :epilogue won't work, as the source code block is in R and the epilogue is appended to the code. But I will look at the elisp code Thanks, Rainer > > Best, -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: Rainer@krugs.de Skype: RMkrug PGP: 0x0F52F982