[O] Enhance Org babel scheme

[José L. Doménech]

Hello, I have modified 'ob-scheme.el' to be able to return org tables.

This is a quick patch. I hope you find it useful buut I could modify,
document or write test for it if necesary.

I have already assigned the copyright for Emacs to the FSF.


Enhance the scheme babel block output.

Allow scheme code blocks to return a table.

* lisp/ob-scheme.el (org-babel-scheme-null-to): New custom option that
  allows to use a empty list to format the table output, initially assigned
  to 'hlines.
  (org-babel-scheme-table-or-string): New helper function to convert the
  return value from the block as a table or a string.
  (org-babel-execute-src-block): Changed to allow the return of a table for
  the output.

ob-scheme.el.diff
Description: Text document

Best regards:

José L. Doménech