From 5929b6b52281c9c89d62fba525cda54b8958625d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Sun, 28 Feb 2021 17:54:05 +0100
Subject: [PATCH] man: mention that != matches nonexistent keys too

Fixes #15984.
---
 man/udev.xml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/man/udev.xml b/man/udev.xml
index c1166b55008..8782bb15c54 100644
--- a/man/udev.xml
+++ b/man/udev.xml
@@ -79,14 +79,16 @@
           <varlistentry>
             <term><literal>==</literal></term>
             <listitem>
-              <para>Compare for equality.</para>
+              <para>Compare for equality. (The specified key has the specified value.)</para>
             </listitem>
           </varlistentry>
 
           <varlistentry>
             <term><literal>!=</literal></term>
             <listitem>
-              <para>Compare for inequality.</para>
+              <para>Compare for inequality. (The specified key doesn't have the specified value, or the
+              specified key is not present at all.)
+              </para>
             </listitem>
           </varlistentry>