Re: [Orgmode] [BABEL] help adding a language, please?

[Eric Schulte]

Hi,

address@hidden writes:

> Hi guys,
>
> Org-mode newbie, here.  I'd like to add newlisp to the list
> of languages that babel supports.

That's fantastic.

> I got ob-template.el and replaced all occurrences of "template" with
> "newlisp."
>
> When I try to execute a code block, it fails, looking for
> "inf-newlisp."  That's "inferior-mode," right?  Can I work
> around that somehow?  There is a newlisp mode available
> here:
> http://github.com/may/newlisp-mode
> I'm running Org-mode 7.01.
>

This depends if you'd rather execute newlisp code blocks in a "session"
(i.e. in an inferior newlisp buffer, which would require newlisp-mode),
or if you'd rather evaluate newlisp externally.  Most languages support
both types of evaluation, but I'd recommend starting with a single
execution mode (whichever will be simpler to implement), and then
incrementally adding functionality.

I just installed newlisp locally, it looks like a nice language, I may
start using this as I've been looking for a light-weight lisp/scheme for
small scripting tasks.

I just put together the following, which works for me as a simple
evaluation function -- note this takes the "external evaluation" path.

--8<---------------cut here---------------start------------->8---
(defun org-babel-execute:newlisp (body params)
  (let ((tmp-file (make-temp-file "org-babel-newlisp")))
    (with-temp-file tmp-file
      (insert
       (format "(println (begin\n%s\n))\n(exit)" body)))
    (prog1 (org-babel-eval (format "newlisp -f %s" tmp-file) "")
      (delete-file tmp-file))))
--8<---------------cut here---------------end--------------->8---

Note, this doesn't make use of *any* of Babels header argument
functionality, but it could serve as a place to start.

>
> Org-mode is great!  I sure hope you guys are tolerant of
> stupid questions, because I've got a bunch of them. 
> :-)

Please don't be shy about asking questions, we can be a very
understanding bunch.

Happy Hacking -- Eric