Re: [babel] common lisp / slime evaluation in org-mode

From: "Eric Schulte" <schulte.eric@gmail.com>
To: Erik Iverson <eriki@ccbr.umn.edu>
Cc: dto@gnu.org, emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: [babel] common lisp / slime evaluation in org-mode
Date: Wed, 09 Feb 2011 18:18:49 -0700	[thread overview]
Message-ID: <87pqr0oej4.fsf@gmail.com> (raw)
In-Reply-To: 4D52CF48.9030906@ccbr.umn.edu

Hi Erik,

I've been switching from Clojure to Common Lisp myself, and have also
found that there are some issues with ob-lisp.el (although I've been too
busy recently to look closely at them).

ob-clojure.el works well, and uses slime for code evaluation -- and it
has a simpler setup than ob-lisp -- so maybe it would be possible to
port the code in ob-clojure over to common lisp?

I'll be happy to help get ob-lisp.el into shape once I have a free
moment...

Cheers -- Eric

Erik Iverson <eriki@ccbr.umn.edu> writes:

> Hello,
>
> I have started playing around with SLIME and was pleased to find there
> was already some support in org-mode for evaluating Common LISP
> blocks. The comments in ob-lisp.el makes it clear that it is not
> complete support yet. It appears for example that you can only
> evaluate one lisp form per code block. Here is an example.
>
> * First, let's try in emacs lisp
>
> The following works how I would expect. The value in the results block
> is the value of the last expression in the code block.
>
> #+begin_src emacs-lisp
>
> (defvar test1 "test1 value")
> (defvar test2 "test2 value")
> test2
>
> #+end_src
>
> #+results:
> : test2 value
>
> * Now, let's try common lisp
>
> First, we need to start up a SLIME session, with M-x slime. This
> assumes you have SLIME set up correctly. I am using SBCL as my CL
> environment in this example.
>
> #+begin_src lisp :session
>
> (defvar test1 "test1 value")
> (defvar test2 "test2 value")
> test2
>
> #+end_src
>
> #+results:
> : TEST1
>
> You see the result in the buffer is the value of the first form, and
> if I go into the inferior-lisp buffer, test2 is not bound to any
> value. If I evaluate the CL code block above without the :session
> argument, I get an error in the *Org-Babel Error Output* buffer.
>
> Looking at the code in ob-lisp.el, I think I see why this is
> happening, but don't know enough about SLIME yet to make it work. It
> seems that line that calls =eval-slime= would need to be changed to
> =eval-slime-buffer= after dumping the code block into a temporary
> buffer. However, that didn't quite work since that function
> (=slime-eval-buffer=) doesn't appear to actually return the final
> value.
>
> So, I write this in case this is an easy fix for someone with more
> knowledge of SLIME, and to confirm that this is indeed the current
> behavior that others see. I will continue to investigate a solution.
>
> Thanks,
> --Erik
>
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