elisp--eval-defun-1

elisp--eval-defun-1 is a compiled Lisp function in `elisp-mode.el'.

(elisp--eval-defun-1 FORM)

Treat some expressions specially.
Reset the `defvar' and `defcustom' variables to the initial value.
(For `defcustom', use the :set function if there is one.)
Reinitialize the face according to the `defface' specification.