--- luash.lua.orig	2013-10-30 09:02:38.000000000 +0100
+++ luash.lua	2013-10-30 09:02:58.000000000 +0100
@@ -58,7 +58,7 @@
 				  if h ~= nil then
 				    return h
 				  end
-				  if os.execute("which " .. key .. " &> /dev/null") == 0 then
+				  if os.execute("which " .. key .. " &> /dev/null") then
 				    return  function(...)
 					      if #{...} == 0 then
 						return runner(key)