Slight refactor for improved readability. Also added example of load_extension in default conf.

diakonos.conf

@@ -1524,3 +1524,6 @@ lang.lua.indent.ignore ^(.+:|\s*?)$
 
 # Uncomment this line if your terminal supports 256 colours.
 #include ~/.diakonos/diakonos-256-colour.conf
+
+# Load extensions like this, specifying the extension directory (relative to ~/.diakonos/extensions)
+#load_extension dk-git

lib/diakonos/buffer/display.rb

@@ -266,7 +266,9 @@ module Diakonos
 
       Thread.new do
 
-        if $diakonos.display_mutex.try_lock
+        if ! $diakonos.display_mutex.try_lock
+          $diakonos.display_enqueue( self )
+        else
           begin
             Curses::curs_set 0
 
@@ -360,8 +362,6 @@ module Diakonos
 
           $diakonos.display_mutex.unlock
           $diakonos.display_dequeue
-        else
-          $diakonos.display_enqueue( self )
         end
 
       end