org-babel: how to evaluate code block with "alias" language?

org-babel: how to evaluate code block with "alias" language?

[North Year]

suppose I want to evaluate the following code block in an org file:

#+begin_src r
data.frame(
    dog = rnorm(5),
    cat = rnorm(5)
)
#+end_src

then I will get the following error:
"org-babel-execute-src-block: No org-babel-execute function for r!"

I tried the following config in my init file, but they does not to work

#+begin_src emacs-lisp

(org-babel-do-load-languages
 'org-babel-load-languages
 '((R . t)))

(add-to-list 'org-src-lang-modes '("r" . R))
#+end_src

and the following elisp

#+begin_src emacs-lisp
(org-babel-do-load-languages
 'org-babel-load-languages
 '((r . t)))
#+end_src

will yield error:
"failed to provide feature ‘ob-r’"

I know this problem is trivial to solve by simply replace "r" by "R".
However aliases are something expected to frequently happened and
can anyone has idea on how to make evaluating code blcok with "alias" language work?

Re: org-babel: how to evaluate code block with "alias" language?

[Bastien]

Hi North,

North Year <ny-ml@outlook.com> writes:

> #+begin_src emacs-lisp
> (org-babel-do-load-languages
>  'org-babel-load-languages
>  '((r . t)))
> #+end_src

I suggest you try with an uppercase "R":

#+begin_src emacs-lisp
(org-babel-do-load-languages
 'org-babel-load-languages
 '((R . t)))
#+end_src

If Org's documentation is not accurate about this, please report a bug
with M-x org-submit-bug-report RET.

-- 
 Bastien

Re: org-babel: how to evaluate code block with "alias" language?

[North Year]

Bastien <bzg@gnu.org> writes:

> Hi North,
>
> North Year <ny-ml@outlook.com> writes:
>
>> #+begin_src emacs-lisp
>> (org-babel-do-load-languages
>>  ’org-babel-load-languages
>>  ’((r . t)))
>> #+end_src
>
> I suggest you try with an uppercase “R”:
>
> #+begin_src emacs-lisp
> (org-babel-do-load-languages
>  ’org-babel-load-languages
>  ’((R . t)))
> #+end_src
>
> If Org’s documentation is not accurate about this, please report a bug
> with M-x org-submit-bug-report RET.

Thanks for your advice. I already mentioned in the original thread that
I know I can simply replace “r” by “R”.
But I am asking about if there is some general solution for this.

The nuance of “R” and “r” is just a simple example.
There might be other cases, like “Fortran” vs “F90”,
“js” vs “javascript”, “c” vs “C”, “cpp” vs “c++”.

“org-src-lang-modes” only affect syntax highlight,
but has nothing to do with org-babel evaluation.

Re: org-babel: how to evaluate code block with "alias" language?

[tomas]

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On Wed, Nov 23, 2022 at 09:35:36PM +0100, Bastien wrote:
> Hi North,
> 
> North Year <ny-ml@outlook.com> writes:
> 
> > #+begin_src emacs-lisp
> > (org-babel-do-load-languages
> >  'org-babel-load-languages
> >  '((r . t)))
> > #+end_src
> 
> I suggest you try with an uppercase "R":

There is an "r", which is basically a flavour of "R" [1] (it's
actually just an R with some initialization stuff making it
friendlier for some tasks).

I think that's what the OP was pointing at.

Cheers

[1] https://dirk.eddelbuettel.com/code/littler.html

-- 
t

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