Re: [BUG] WORG example for ob-lilypond is no longer working as described (was: Moving some lisp/ob-*.el files to org-contrib - your advice?)

[Ihor Radchenko <yantar92@posteo.net>]

Jonathan Gregory <jgrg@autistici.org> writes:

>> Ok. That fix has been already installed. 
>> https://git.sr.ht/~bzg/worg/commit/6f69d212f41bc372426dc9b4df286638fe8f2a92
>
> To the extent of the lilypond.org file, yes, but only if the 
> output is a PDF. My suggestion is to revert that commit and 
> incorporate the changes into ob-lilypond.

Then, may you elaborate what purpose the changes are going to serve?
Automatic page sizing? Automatic page settings?

> The purpose of the patch was to fix the problem described in 
> https://masto.ai/@rfc1149/110674961710491363. I wasn't trying to 
> introduce anything new.

If we want to add boilerplate code to ob-lilypond, it does sound like
introducing something new. Again, I feel confused. Please, explain in
more details what you want to archive in terms of functionality.

> No, the ob-lilypond patch is needed. It allows users to generate 
> music fragments (as opposed to a full page) in basic mode using 
> pdf, eps, and png.

May your please explain what is "basic mode".
And what about users who do want a full page?

>> There is :prologue standard header argument. However, it is 
>> currently not supported by ob-lilypond. (which is a bug)
>
> Can you show me how that's done in elisp? I would expect the last 
> block to output "foobar".
>
> #+begin_src elisp :noweb-ref test
> (setq x "foo" y "bar")
> #+end_src
>
> #+begin_src elisp :prologue <<test>> :noweb yes
> (concat x y)
> #+end_src

Noweb and babel references are not allowed in header args.
And ob-emacs-lisp also does not support :prologue.

You can try

#+begin_src gnuplot :prologue set xrange [0:1]
plot x
#+end_src

or

#+begin_src gnuplot :prologue (format "set xrange [0:%d]" 11)
plot x
#+end_src

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
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