Add #'subr-arity, API taken from GNU, implementation our own. lisp/ChangeLog addition: 2009-01-11 Aidan Kehoe <kehoea@parhasard.net> * subr.el: Correct a comment, we now have #'syntax-after in syntax.el. (subr-arity): New. Docstring and API taken initially from GNU's data.c, revision 1.275, GPLv2. tests/ChangeLog addition: 2009-01-11 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el (): Test #'subr-arity, recently added to subr.el.