Since the initial patch got accepted, I worked the other occurrences as
well.
Felix 
From 726ccc115124e702b7efe3a44894fc45f84d868a Mon Sep 17 00:00:00 2001
From: Felix Bier <[email protected]>
Date: Sun, 13 May 2012 00:23:05 +0200
Subject: [PATCH 1/3] Return condition value instead of conditional true/false


Signed-off-by: Felix Bier <[email protected]>
---
 lib/awful/key.lua.in |    5 +----
 1 Datei geändert, 1 Zeile hinzugefügt(+), 4 Zeilen entfernt(-)

diff --git a/lib/awful/key.lua.in b/lib/awful/key.lua.in
index b88cd29..10aa9ee 100644
--- a/lib/awful/key.lua.in
+++ b/lib/awful/key.lua.in
@@ -67,10 +67,7 @@ function match(key, pressed_mod, pressed_key)
     end
     -- If the number of pressed modifier is ~=, it is probably >, so this is not
     -- the same, return false.
-    if #pressed_mod ~= #mod then
-        return false
-    end
-    return true
+    return #pressed_mod == #mod
 end
 
 setmetatable(_M, { __call = function(_, ...) return new(...) end })
-- 
1.7.10.2

From 4ab70e8f4f9042e526c329dde24e4d35c767eb9e Mon Sep 17 00:00:00 2001
From: Felix Bier <[email protected]>
Date: Sun, 13 May 2012 00:23:23 +0200
Subject: [PATCH 2/3] Return condition value instead of conditional true/false


Signed-off-by: Felix Bier <[email protected]>
---
 lib/wibox/widget/base.lua.in |    8 +-------
 1 Datei geändert, 1 Zeile hinzugefügt(+), 7 Zeilen entfernt(-)

diff --git a/lib/wibox/widget/base.lua.in b/lib/wibox/widget/base.lua.in
index 1d17d16..9ee6bb7 100644
--- a/lib/wibox/widget/base.lua.in
+++ b/lib/wibox/widget/base.lua.in
@@ -24,13 +24,7 @@ end
 --- Handle a button event on a widget. This is used internally.
 function handle_button(event, widget, x, y, button, modifiers)
     local function is_any(mod)
-        if #mod ~= 1 then
-            return false
-        end
-        if mod[1] ~= "Any" then
-            return false
-        end
-        return true
+        return #mod == 1 and mod[1] == "Any"
     end
 
     local function tables_equal(a, b)
-- 
1.7.10.2

From 3d4b4dfa491bcf7a3bb326349f642736489fc6a1 Mon Sep 17 00:00:00 2001
From: Felix Bier <[email protected]>
Date: Sun, 13 May 2012 00:23:35 +0200
Subject: [PATCH 3/3] Return condition value instead of conditional true/false


Signed-off-by: Felix Bier <[email protected]>
---
 lib/awful/widget/taglist.lua.in |    6 +-----
 1 Datei geändert, 1 Zeile hinzugefügt(+), 5 Zeilen entfernt(-)

diff --git a/lib/awful/widget/taglist.lua.in b/lib/awful/widget/taglist.lua.in
index 05256bf..a6ec7f6 100644
--- a/lib/awful/widget/taglist.lua.in
+++ b/lib/awful/widget/taglist.lua.in
@@ -172,11 +172,7 @@ end
 -- @param screen The screen we are drawing on.
 -- @return true if t is not empty, else false
 function filter.noempty(t, args)
-    if #t:clients() > 0 or t.selected then
-        return true
-    end
-
-    return false
+    return #t:clients() > 0 or t.selected
 end
 
 --- Filtering function to include all tags on the screen.
-- 
1.7.10.2

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