From 37071c5f6fd6552967471ed761c2044a1dc0a610 Mon Sep 17 00:00:00 2001
From: koniu <gkusnierz@gmail.com>
Date: Sat, 18 Apr 2009 22:22:15 +0100
Subject: [PATCH] awful.util: table.join ignore nil arguments

Signed-off-by: koniu <gkusnierz@gmail.com>
Signed-off-by: Julien Danjou <julien@danjou.info>
---
 lib/awful/util.lua.in | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/awful/util.lua.in b/lib/awful/util.lua.in
index 2f99b333e..d310204fe 100644
--- a/lib/awful/util.lua.in
+++ b/lib/awful/util.lua.in
@@ -224,11 +224,13 @@ end
 function table.join(...)
     local ret = {}
     for i = 1, arg.n do
-        for k, v in pairs(arg[i]) do
-            if type(k) == "number" then
-                rtable.insert(ret, v)
-            else
-                ret[k] = v
+        if arg[i] then
+            for k, v in pairs(arg[i]) do
+                if type(k) == "number" then
+                    rtable.insert(ret, v)
+                else
+                    ret[k] = v
+                end
             end
         end
     end