>>719
*scratch*でmapcを使ってみたけどlexical-letとlexical-binding: tのletは同じ結果になった

emacs-version "24.5.1"
(require 'cl-lib) cl-lib

(setq lexical-binding nil) nil
(let ((count 4)) (mapc (let ((count 8)) (lambda (x) (print (incf count)))) '(a b c)))
5

6

7
(a b c)

(setq lexical-binding nil) nil
(let ((count 4)) (mapc (lexical-let ((count 8)) (lambda (x) (print (incf count)))) '(a b c)))
9

10

11
(a b c)

(setq lexical-binding t) t
(let ((count 4)) (mapc (let ((count 8)) (lambda (x) (print (incf count)))) '(a b c)))
9

10

11
(a b c)