[O] Maxima code blocks does not work in windows revisited

[Juan Alvaro Fuentes]

Dear all,

It seems that maxima code blocks still does not work in windows as the following code did not work when I tried to run it:

#+begin_src maxima

 a: 1+1;

 print(a);

#+end_src

This is an old issue already emailed to this emacs org-mode list in an email dating from june 2011.

The conversation ended up with a final reflection which I copy next:

> Okay, it definitely is a Windows problem. If I run the following command
> in a cygwin shell, everything works as expected:
>
> maxima --very-quiet -r
> 'batchload("c:/Users/weiss/AppData/Local/Temp/babel-17716aLH/maxima-17716hCp")$'
> nil
>
> However, it does not work in a Windows shell. But this is no longer an
> org issue.
>
> Bernd

Trying to find the correct string that makes maxima execute the batch file in windows I found that this command does work:
maxima --very-quiet -r "batchload(\"c:/Users/alvaro/AppData/Local/Temp/babel-7740OHt/maxima-7740OpY.max\")$"
maxima --very-quiet -r "batchload(\"c:/Users/alvaro/AppData/Local/Temp/babel-7740OHt/maxima-7740OpY.max\")$"
2 

I tried to make this string when maxima is executed in the shell and modifying ob-maxima.el found that this seems to work for windows 8, emacs 24.4 and org 8.2.7b:

 (let* ((cmdline (or (cdr (assoc :cmdline params)) ""))
          (in-file (org-babel-temp-file "maxima-" ".max"))
		(cmd (format "%s --very-quiet -r \"batchload(\\\"%s\\\")$\" %s"
			     org-babel-maxima-command in-file cmdline)))

The problem is that my lisp skills are not very good, to say the least, and sending a patch is one more problem so I write this email if this can help anybody to makemaxima code blocks work in windows.

Thanks,
Juan Alvaro