BEGIN_SRC..END_SRC (was: lexical-binding questions)

[Eli Zaretskii]

> From: Thierry Volpiatto <address@hidden>
> Date: Sat, 05 May 2012 08:45:43 +0200
> 
> #+BEGIN_SRC emacs-lisp
> ;; -*- lexical-binding: t -*-
>
> (defun foo ()
>   (declare (special bar))
>   (let ((bar 2)
>         (baz 3))
>     #'(lambda () (+ bar baz))))
>
> ;; I expect this:
>
> ;; (funcall (foo))
> ;;=>Symbol's value as variable is void: bar
>
> #+END_SRC

Do these BEGIN_SRC and END_SRC marks serve some useful purpose in mail
messages?