From e83a00ddc1eede6d51cbc94862f4fa89c887509f Mon Sep 17 00:00:00 2001
From: Michael Heerdegen <michael_heerdegen@web.de>
Date: Thu, 3 Mar 2022 01:47:17 +0100
Subject: [PATCH] WIP: with-demoted-errors: document FORMAT arg nil

---
 lisp/subr.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lisp/subr.el b/lisp/subr.el
index eb9af0b36d..bb077267f8 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -4541,8 +4541,9 @@ 'condition-case-no-debug

 (defmacro with-demoted-errors (format &rest body)
   "Run BODY and demote any errors to simple messages.
-FORMAT is a string passed to `message' to format any error message.
-It should contain a single %-sequence; e.g., \"Error: %S\".
+FORMAT is a string passed to `message' to format any error message, or nil.
+If it is a string, it should contain a single %-sequence.  If it is
+nil, \"Error: %S\" is used.

 If `debug-on-error' is non-nil, run BODY without catching its errors.
 This is to be used around code that is not expected to signal an error
--
2.30.2