From 589ae02871bed3e062f6274f13a7a5eae417e8c4 Mon Sep 17 00:00:00 2001
From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Mon, 10 Jun 2019 13:30:30 +0200
Subject: Add comment about internal mapping symbol

---
 lisp/emacs-lisp/bytecomp.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 9697d0d9cde..993300cda2a 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -514,6 +514,9 @@ Return the compile-time value of FORM."
                                 expanded)))))
     (with-suppressed-warnings
         . ,(lambda (warnings &rest body)
+             ;; This function doesn't exist, but is just a placeholder
+             ;; symbol to hook up with the
+             ;; `byte-hunk-handler'/`byte-defop-compiler-1' machinery.
              `(internal--with-suppressed-warnings
                ',warnings
                ,(macroexpand-all `(progn ,@body)
-- 
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