Re: [O] [babel] adding a language - problems

[Thorsten]

Thorsten <address@hidden> writes:

> Hi list, 
> I'm on my way to add a new (intrpreted) lisp dialect to org-babel, but
> encounter a few difficulties. Here is my little testprogramm:
>
> ---------------------
> #+tblname: tbl1
> | 1 | 2 | 3 |
> |---+---+---|
> | 4 | 5 | 6 |
> | 7 | 8 | 9 |
>
>
> # external evaluation (no session)
> #+srcname: pico-calc
> #+begin_src picolisp :var tab=tbl1 :results value :hlines no 
>   (+ (caar tab) (caar (cdr tab)))
> #+end_src
>
> # org-babel-error output:
> [/tmp/babel-22634XBd/picolisp-script-22634K-K:1] !? (display (prog (let
> (tab '((1 2 3) (4 5 6) (7 8 9))) (+ (caar tab) (caar (cdr tab))))))
> display -- Undefined
>
>
> #  with session
> #+srcname: pico-calc
> #+begin_src picolisp :var tab=tbl1 :results value :hlines no :session "p1"
>   (+ (caar tab) (caar (cdr tab)))
> #+end_src
>
> #+results: pico-calc
> [finishes with no output]
>
> # session buffer:
> (prog (let (tab '((1 2 3) (4 5 6) (7 8 9))) 
> (+ (caar tab) (caar (cdr tab)))) )
> "org-babel-picolisp-eoe"
> -> 5
> : -> "org-babel-picolisp-eoe"
>
> ---------------
>
> I do not know where undefined 'display' comes from in the error message
> - seems to be a org-babel internal thing. What can I do about that,
> where do I have to look?
>
> The session evaluation works already, but there is a problem with the
> eoe string. If I don't use it, Emacs hangs forever - waiting for the
> session to return? If I use it, the right value is calculated, but not
> returned - because the eoe string is evaluated after the source-body?
>
> Thanks for any tips
> Thorsten


Sorry, I encountered the undefined 'display' in source code I copied
from ob-scheme, I deleted it, and then external evaluation succeeded -
but again without output. 
So I seem to be quite close, evaluation work and the right value is
calculated - but not returned yet. 

cheers
Thorsten