Re: Scheme babel error

[Lawrence Bottorff <borgauf@gmail.com>]

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Actually, I found that thread (
https://lists.gnu.org/archive/html/emacs-orgmode/2015-09/msg00390.html) and
looked thrugh it (not as good as "looking through" it), but didn't make the
connection that it was because of the boolean -- again. What threw me was
how this time it seemed to just be a source block execute of the function,
whereas before it was the actual code -- as if the problem in ob-scheme.el
had escaped and hidden somewhere new.

How does one make an official bug report and/or fix?

On Tue, Aug 30, 2016 at 1:16 PM, Nick Dokos <ndokos@gmail.com> wrote:

> Lawrence Bottorff <borgauf@gmail.com> writes:
>
> > I'm using Racket with Geiser and I get this error:
> >
> > executing Scheme code block...
> > => #f
> > org-babel-scheme-execute-with-geiser: Invalid read syntax: "#"
> >
> > when in an org-mode file this code
> >
> > #+begin_src scheme :exports both :session ch3
> > (define (bool-imply2 x y)
> >   (or (not x) y))
> > #+end_src
> >
> > is run (C-c-c)
> >
> > #+BEGIN_SRC scheme :session ch3
> > (bool-imply2 #t #f)
> > #+END_SRC
> >
> > In the Racket "ch3" REPL session (bool-imply2 #t #f) works fine. I
> discovered this problem when I first
> > tried a simple export to HTML of the buffer. It seems to not like the
> second boolean parameter. So
> > switching the parameters then complains about #t . What might be going
> on? BTW, does an export try to
> > "run" all the code blocks, i.e., why did I find this when I was
> exporting to HTML?
> >
> > LB
> >
>
> Aargh - somebody (maybe you?) had run into this a long time ago and I
> had suggested a possible fix, but with the demise of the gmane site, I
> cannot find the thread - how do people search the ML nowadays?
>
> In any case, there is a basic error in ob-scheme.el, line 176 (at
> least in the version that I have):
>
>         ...
>         (setq result (if (or (string= result "#<void>")
>                              (string= result "#<unspecified>"))
>                          nil
>                        (read result)))))   ;;;<<<<<<<<<<<<<<<<
>         ...
>
> The (read result) is bogus: it tries to use the emacs lisp reader to
> parse a string that contains a scheme expression.
>
> IIRC, I suggested changing it to just result:
>
>         ...
>         (setq result (if (or (string= result "#<void>")
>                              (string= result "#<unspecified>"))
>                          nil
>                        result))))
>         ...
>
> but I didn't (and still don't) know if that breaks anything else.
>
> Plus I'm on a machine that doesn't have geiser so I can't even test the
> basic "fix",
> so I hope I've got it right. I'll try to follow up tonight from a machine
> that has
> geiser installed.
>
> --
> Nick
>
>
>

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