Evaluation of code block does nothing about ob-prolog HOT 5 CLOSED

When running as a script prolog doesn't do any output unless you print it to the screen yourself with e.g. write or format. If run in a session you will see the output that you are looking for. I think the error is from org-babel trying to read the results and not finding anything. I will look into it.

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The error should now not show anymore.

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Got your update. I'm still not getting any output after loading the factorial code above with

#+BEGIN_SRC prolog
factorial(10,What).
#+END_SRC

I'm used to org-mode babel giving me output on a code block like this. Also, no Prolog REPL is started. *Messages* says it's writing to /tmp/babel..., but it's only echoing the command. How can I get the "usual" babel behavior?

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Not sure if related, but elpa's prolog mode 1.22 (from marmalade) has a bug that I've reported https://github.com/usergenic/emacs.d/issues/1.

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Sorry I've been a bit slow on this, but I think that it is doing what it is supposed to be doing. If don't print anything, what do you expect a program to return? If you run the program in a session you can get the output that I think you are after, but running a program that has no output shouldn't give any output either.

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