* lisp/loadup.el (lexical-binding): Add a comment

(cherry picked from commit 44a1721156ec29e5799da94f7918f217f52fd751)

diff --git a/lisp/loadup.el b/lisp/loadup.el
index 0b18b902a69de30b6f9c419fcb5216b7b54b7101..7c67df9fade78b1e56e4a1bb5009968559761e99 100644 (file)
--- a/lisp/loadup.el
+++ b/lisp/loadup.el
@@ -635,6 +635,8 @@ directory got moved.  This is set to be a pair in the form of:
           (unwind-protect
               (let ((tmp-dump-mode dump-mode)
                     (dump-mode nil)
+                    ;; Set `lexical-binding' to nil by default
+                    ;; in the dumped Emacs.
                     (lexical-binding nil))
                 (if (member tmp-dump-mode '("pdump" "pbootstrap"))
                     (dump-emacs-portable (expand-file-name output invocation-directory))