Re: Conditionally loading ob-sh or ob-shell

[Loris Bennett]

Loris Bennett <address@hidden> writes:

> Hi,
>
> I want to use one init.el across multiple machines with different
> versions of Emacs and Org.  Since 'ob-sh.el' changed to 'ob-shell', I
> need to do either
>
>   (org-babel-do-load-languages
>    'org-babel-load-languages
>    '((org . t)
>      (emacs-lisp . t)
>      (shell . t)
>      (perl . t)
>      (R . t)
>      (matlab . t)
>      (gnuplot . t)
>      (dot . t)
>      (ditaa . t)
>      (plantuml . t)
>      (sqlite . t)
>      (python . t)
>      (latex . t)))
> or 
>
>   (org-babel-do-load-languages
>    'org-babel-load-languages
>    '((org . t)
>      (emacs-lisp . t)
>      (sh . t)
>      (perl . t)
>      (R . t)
>      (matlab . t)
>      (gnuplot . t)
>      (dot . t)
>      (ditaa . t)
>      (plantuml . t)
>      (sqlite . t)
>      (python . t)
>      (latex . t)))
>      
> I can obviously use a conditional to test the Emacs or Org version and
> execute one block or the other.  However, since the list of languages is
> quite long, I would like to avoid repeating it.
>
> I create init.el from an init.org, so I am open to tangling solutions too.
>
> Cheers,
>
> Loris

I discovered

  append org-babel-load-languages 

and solved the problem like this:

  (org-babel-do-load-languages                                                  
                
   'org-babel-load-languages                                                    
                
   '(                                                                           
                
     (org . t)                                                                  
                
     (emacs-lisp . t)                                                           
                
     (perl . t)                                                                 
                
     (R . t)                                                                    
                
     (matlab . t)                                                               
                
     (gnuplot . t)                                                              
                
     (dot . t)                                                                  
                
     (ditaa . t)                                                                
                
     (plantuml . t)                                                             
                
     (sqlite . t)                                                               
                
     (python . t)                                                               
                
     (latex . t)))
     
  (if (string= org-version "8.2.10")                                            
                
      (org-babel-do-load-languages                                              
                
       'org-babel-load-languages                                                
                
       (append org-babel-load-languages                                         
                
               '((sh . t))))                                                    
                
    (org-babel-do-load-languages                                                
                
     'org-babel-load-languages                                                  
                
     (append org-babel-load-languages                                           
                
             '((shell . t)))))           

The version test is a bit rigid, but

  org-version-check

is deprecated in my newer, primary version of Org and I couldn't work
out how to use it anyway 😅

Cheers,

Loris

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