[modules] Possible return values of the env->type_of?

[Kaushal Modi <kaushal.modi@gmail.com>]

Hello,

What are all the possible return values of the type_of function in the
Dynamic Modules API?

I am playing with Nim Emacs Modules[1], and interestingly the symbol
returned by type_of for lists is 'cons too.

From [2]:

(ert-deftest modtest-get-type ()
  (should (eq 'string (modtest-get-type "abc")))
  (should (eq 'integer (modtest-get-type 42)))
  (should (eq 'float (modtest-get-type 42.0)))
  (should (eq 'symbol (modtest-get-type nil)))
  (should (eq 'symbol (modtest-get-type t)))
  (should (eq 'symbol (modtest-get-type '())))
  (should (eq 'cons (modtest-get-type (cons 1 2))))
  (should (eq 'cons (modtest-get-type '(1 . 2))))
  (should (eq 'cons (modtest-get-type '(1 2 3)))) ;Interestingly, this is a
"cons" too.
  (should (eq 'cons (modtest-get-type (list 1 2 3))))) ;.. and this too!

Below code[3] is in Nim that creates that Elisp modtest-get-type function;
it's a light wrapper that calls the type_of Modules API function:

emacs.defun(get_type, 1):
  ## Returns the Emacs-Lisp symbol of the argument type.
  env.type_of(env, args[0])

Is this expected? I was expecting the type symbol returned for the last two
tests above to be 'list.


[1]: https://github.com/kaushalmodi/nim-emacs-module
[2]:
https://github.com/yuutayamada/nim-emacs-module/blob/f7ee0c886c67707612c6b2a62f17025b083e2aca/test/test-modtest.el#L30-L40
[3]:
https://github.com/yuutayamada/nim-emacs-module/blob/f7ee0c886c67707612c6b2a62f17025b083e2aca/test/modtest.nim#L161-L163
-- 

Kaushal Modi