diff -r bd9f24178d67 -r 5bcdb71ef2f2 examples/muc.lua
--- a/examples/muc.lua	Mon Apr 12 00:41:23 2010 +0300
+++ b/examples/muc.lua	Wed Apr 14 11:21:02 2010 +0300
@@ -10,7 +10,7 @@
 			return
 		end
 		local who
-		if args then
+		if args and args ~= "" then
 			who = args
 		else
 			who = main.current_buddy ()