From be09e6e6bf034742e081b3d021a6df8fbb6151cd Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@twinsun.com>
Date: Wed, 9 Sep 1998 21:33:50 +0000
Subject: [PATCH] Add a comment to emacs_memftime, explaining why it needs to
 loop.

---
 src/editfns.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/editfns.c b/src/editfns.c
index 619280d73d5..cf88d69d23b 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -866,6 +866,11 @@ emacs_memftime (s, maxsize, format, format_len, tp)
 {
   size_t total = 0;
 
+  /* Loop through all the null-terminated strings in the format
+     argument.  Normally there's just one null-terminated string, but
+     there can be arbitrarily many, concatenated together, if the
+     format contains '\0' bytes.  emacs_strftime stops at the first
+     '\0' byte so we must invoke it separately for each such string.  */
   for (;;)
     {
       size_t len;
-- 
2.39.2