Re: How is the return value of `org-babel-execute:FOO` interpreted?

[Kodi Arfer]

On 2021 Oct 03 Sun 5:38:10 AM -0400, Ihor Radchenko <yantar92@gmail.com> wrote:
> Kodi Arfer <listu@arfer.net> writes:
> > I have an `org-babel-execute` function for the Hy programming
> > language that seems to have partly broken when I upgraded Org (from
> > 9.1.14 to 9.4.6). …
>
> I just tested using ob-gnuplot and :file link is correctly inserted when
> org-babel-execute:gnuplot returns nil.
>
> Are you sure that you have :file parameter in the source block you tried
> to execute?

Yes, this is my code block:

#+begin_src hy :file g/foo.png
(plt.scatter [1 2 3] [4 5 -9])
#+end_src

And it looks like `org-babel-execute:hy` is indeed receiving the argument, since `(message 
"%s" (assq :file (org-babel-process-params params)))` prints "(:file . 
g/foo.png)".