From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Mon, 17 Oct 2016 16:22:44 +0000 (-0400)
Subject: man: add a note that NULL "s" arg for sd_bus_message_append
X-Git-Tag: v234~939^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=caf15ff01e7ebd83b09e7ad6e0446b24d0041beb;p=platform%2Fupstream%2Fsystemd.git

man: add a note that NULL "s" arg for sd_bus_message_append
---

diff --git a/man/sd_bus_message_append.xml b/man/sd_bus_message_append.xml
index 77fce02..c222d0f 100644
--- a/man/sd_bus_message_append.xml
+++ b/man/sd_bus_message_append.xml
@@ -169,6 +169,11 @@
       </tgroup>
     </table>
 
+    <para>For types "s" and "g" (unicode string or signature), the pointer may be
+    <constant>NULL</constant>, which is equivalent to an empty string. See
+    <citerefentry><refentrytitle>sd_bus_message_append_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+    for the precise interpretation of those and other types.</para>
+
   </refsect1>
 
   <refsect1>