This proposal for code tidying uses multiple-value-bind to satisfy:
1. The various parsed/resolved components of the param list (session,
vars, result-type) are available in the org-babel-execute:LANG
functions.
2. Those functions don't duplicate the code for parsing the params
list and resolving references
3. The functions still have the params list available to them, should
they need to implement language-specific behaviour using it.
If the org-babel-execute:LANG functions need to be called directly,
then that would now have to be via
(multiple-value-bind (session vars result-params result-type)
(org-babel-process-params params) (funcall cmd body params))
as in org-babel-exp.el. (But is it actually necessary to by-pass
org-babel-execute-src-block?)
This reverts commit d8001facab.
Going back to original plan of simply passing (cmd body params) to the org-babel-execute:LANG functions.
The benefit of this is that languages will have access to the full params list. A downside is that code parsing the
params list and referencing variables is currently duplicated across the languages, so perhaps we can aim to reduce
that code duplication at some point.
