From ad098559d2ee9ed3c176be7d33e6583a573ffc96 Mon Sep 17 00:00:00 2001
From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Wed, 19 Oct 2016 18:44:58 +0100
Subject: [PATCH] Add comment describing concat().

---
 sbr/concat.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sbr/concat.c b/sbr/concat.c
index f5cf1aea..234d1751 100644
--- a/sbr/concat.c
+++ b/sbr/concat.c
@@ -12,6 +12,11 @@
 #include <h/utils.h>
 
 
+/* concat returns a non-NULL malloc'd pointer to the catenation of the
+ * argument strings less their NUL terminators other than the last.  The
+ * arguments are terminated by a NULL.
+ *
+ * Example:  concat("abc", "def", "", "g", NULL) returns "abcdefg". */
 char *
 concat (const char *s1, ...)
 {
-- 
2.56.0