Make amixer get information only from the selected channel

[etc/awesome.git] / widgets / contrib / redshift.lua

diff --git a/widgets/contrib/redshift.lua b/widgets/contrib/redshift.lua
index 8a768fb8fac0cde959157f968dccad2fd6bae3c1..73cc100773197f17089116c2bdd5aac78c7fcefb 100644 (file)
--- a/widgets/contrib/redshift.lua
+++ b/widgets/contrib/redshift.lua
@@ -26,7 +26,7 @@ function redshift:start()
 end
 
 function redshift:toggle()
-    async(string.format("%s -c 'ps -p %d -o pid='", awful.util.shell, redshift.pid), function(f)
+    async({ awful.util.shell, "-c", string.format("ps -p %d -o pid=", redshift.pid) }, function(f)
         if f and #f > 0 then -- redshift is running
             -- Sending -USR1 toggles redshift (See project website)
             execute("pkill -USR1 redshift")
@@ -46,7 +46,9 @@ end
 function redshift:attach(widget, fun)
     redshift.update_fun = fun or function() end
     if not redshift.pid then redshift:start() end
-    widget:buttons(awful.util.table.join(awful.button({}, 1, function () redshift:toggle() end)))
+    if widget then
+        widget:buttons(awful.util.table.join(awful.button({}, 1, function () redshift:toggle() end)))
+    end
 end
 
 return redshift