[TASK] Move babel backend docs from WORG to Org manual

[Ihor Radchenko]

Dear all,

In my talk https://emacsconf.org/2024/talks/org-update, one of the tasks
I announced was moving babel documentation from WORG to Org manual.
Here, I would like to details what should be done for that task.

This is a big task, but we can split it into much smaller and simpler tasks.

I recommend taking documentation from a single language to get started.
Multiple volunteers (if any) may work on other languages in parallel.
Please tell us which language you are working on to avoid conflicts.
Also, feel free to ask anything here or in any other communication
channel (IRC, Matrix, OrgMeetup) if there are difficulties.

The general idea is to port files from
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel into Org
manual.

At the end, we should have all the ob-<lang> files from
https://git.savannah.gnu.org/cgit/emacs/org-mode.git/tree/lisp
documented in the manual.

The documentation at various stages of completeness is listed in
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel/languages
(ob-doc-<lang>.org).

For each built-in language, we will need to:

1. Find ob-doc-<lang>.org file, if any
2. Make sure that the documentation conforms to
   
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel/languages/ob-doc-template.org
3. If it does not, we at least need to indicate undocumented sections
4. If possible, may also document the missing parts
   4.1. Sometimes, the language implementations in lisp/ob-<lang> miss
 features from the checklist. Such problems should be reported as
 bugs for easier tracking.
5. The cleaned up documentation should be ported to Org
   manual. Tentatively, we can follow the structure of export backends
   as in https://orgmode.org/manual/Exporting.html
6. If there is no documentation at all, it should be written

Once we are done with individual languages, we will need to:

1. Review, update, and double check
   
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel/languages/lang-compat.org
2. Write documentation about writing a new backend as in
   
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel/languages/ob-doc-template.org
   and
   https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel/ob-template.el
3. Refer to (or move) this documentation from Org manual
4. Review
   
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel/header-args.org
   and possibly merge it with Org manual
5. There will be some non-builtin language docs available at the end.
   We will need to move this documentation to relevant packages (is
   there are), to org-contrib, or obsolete
6. Review the remaining files in 
https://git.sr.ht/~bzg/worg/tree/master/item/org-contrib/babel

List of built-in languages:

- [ ] ob-C
- [ ] ob-R
- [ ] ob-awk
- [ ] ob-calc
- [ ] ob-clojure
- [ ] ob-css
  Note: This is a stub. We might later discuss if it can be generalized.
- [ ] ob-ditaa
- [ ] ob-dot
- [ ] ob-emacs-lisp
- [ ] ob-eshell
- [ ] ob-forth
- [ ] ob-fortran
- [ ] ob-gnuplot
- [ ] ob-groovy
- [ ] ob-haskell
- [ ] ob-java
- [ ] ob-js
- [ ] ob-julia
- [ ] ob-latex
- [ ] ob-lilypond
- [ ] ob-lisp
- [ ] ob-lua
- [ ] ob-makefile
- [ ] ob-matlab
- [ ] ob-maxima
- [ ] ob-ocaml
- [ ] ob-octave
- [ ] ob-org
- [ ] ob-perl
- [ ] ob-plantuml
- [ ] ob-processing
- [ ] ob-python
- [ ] ob-ruby
- [ ] ob-sass
- [ ] ob-scheme
- [ ] ob-screen
- [ ] ob-sed
- [ ] ob-shell
- [ ] ob-sql
- [ ] ob-sqlite

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>