remember directory to browse across restart

0012-on.initialize

@@ -1,11 +1,14 @@
 on.initialize = function(arg)
 	if #arg == 0 then
-		error('please provide a directory to browse')
-	end
-	if is_absolute_path(arg[1]) then
-		Data_dir = arg[1]
+		if Data_dir == nil then
+			error('please provide a directory to browse')
+		end
 	else
-		Data_dir = App.current_dir..arg[1]
+		if is_absolute_path(arg[1]) then
+			Data_dir = arg[1]
+		else
+			Data_dir = App.current_dir..arg[1]
+		end
 	end
 	print('reading articles from '..Data_dir)
 	if not file_exists(Data_dir) then

0062-on.save_settings

@@ -1,3 +1,3 @@
 on.save_settings = function()
-	return {}
+	return {data_dir=Data_dir}
 end

0106-on.load_settings

@@ -1,2 +1,3 @@
 on.load_settings = function(settings)
+	Data_dir = settings.data_dir
 end