Hi there, the following org snippet is describing my issue.
Thanks in advance, Heiko * TODO post problem report about ob-calc duplicate stack-element issue :LOGBOOK: - State "TODO" from [2020-03-15 Sun 09:19] :END: - I want to use ob-calc to do some "literate calculation" with the purpose to document what I thought at the time I wrote it. - problem: When evaluating the calc snippets the top of stack element is dropped. Because every "begin/end_src calc" block drops the top of stack, one can't reuse the result in following blocks. - although without expecting any effect here is some version information: - emacs version: GNU Emacs 24.4.1 (x86_64-pc-linux-gnu, GTK+ Version 3.14.5) of 2017-09-12 on hullmann, modified by Debian - org-version: 9.2 ** what I'd like to be able Number of cars (PKW) in germany: #+begin_src calc :exports both 45e6 #+end_src #+RESULTS: : 45000000. Yearly mileage in [km/y] #+begin_src calc :exports both 15000 #+end_src #+RESULTS: : 15000 Calculate amount of complete km per year #+begin_src calc :exports both '* #+end_src #+RESULTS: : 675000000000. ** the problem I'm facing and the nearly working work-around - problem: babel removes the resulting top stack element from the stack - tried solution: duplicate the last stack-element on evaluation with "' " (emulate <space> press to duplicate the top element of the stack in calc) - side effect: I normally delete trailing whitespace in my files - so entering "' " is a dangerous workaround - I tried to local-set-key the § key to calc-enter which I thought should enable a command "'§" to duplicate the top of stack. On evaluation this resulted in an error "byte-code: Wrong type argument: number-or-marker-p, nil" Number of cars (PKW) in germany: #+begin_src calc :exports both 45e6 '<space> #+end_src #+RESULTS: : 45000000. Yearly mileage in [km/y] #+begin_src calc :exports both 15000 '<space> #+end_src #+RESULTS: : 15000 Calculate amount of complete km per year #+begin_src calc :exports both '* '<space> #+end_src #+RESULTS: : 675000000000. ** hope for a solution or work around from the community - preferred: Is there a way to leave the top of stack from one snippet to the next (which I don't know)? - alternative: Is there a way to duplicate the top of stack element between begin/end_src calc blocks? - any advice is appreciated.
