From 35ea8b154b105727cf0a0f0238d51b82a0d7c045 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <jak@debian.org>
Date: Sat, 15 Aug 2015 15:33:40 +0200
Subject: [PATCH] Document the general effect of the comma operator

Closes: #574939
---
 doc/apt_preferences.5.xml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/apt_preferences.5.xml b/doc/apt_preferences.5.xml
index be6f12f6a..79132e007 100644
--- a/doc/apt_preferences.5.xml
+++ b/doc/apt_preferences.5.xml
@@ -254,6 +254,11 @@ Pin-Priority: 500
 </programlisting>
 </listitem>
 </itemizedlist>
+
+The effect of the comma operator is similar to an "and" in logic: All
+conditions must be satisfied for the pin to match. There is one exception:
+For any type of condition (such as two "a" conditions), only the last such
+condition is checked.
 </para>
 
 </refsect2>
-- 
2.45.2