Lua Controller: Fix $item_description() documentation and translation

init.lua

@@ -55,6 +55,14 @@ techage.S = minetest.get_translator("techage")
 -- Load mod storage
 techage.storage = minetest.get_mod_storage()
 
+-- Ensure compatibility with older Minetest versions by providing
+-- a dummy implementation of `minetest.get_translated_string`.
+if not minetest.get_translated_string then
+	minetest.get_translated_string = function(lang_code, string)
+		return string
+	end
+end
+
 -- Basis features
 local MP = minetest.get_modpath("techage")
 dofile(MP.."/basis/lib.lua")  -- helper functions

lua_controller/commands.lua

@@ -189,13 +189,13 @@ techage.lua_ctlr.register_function("item_description", {
 	cmnd = function(self, itemstring)
 		local item_def = minetest.registered_items[itemstring]
 		if item_def and item_def.description then
-			return item_def.description
+			return minetest.get_translated_string("en", item_def.description)
 		end
 		return ""
 	end,
 	help = " $item_description(itemstring)\n"..
 			" Get the description for a specified itemstring.\n"..
-			' example: desc = $itemstring("default:apple")'
+			' example: desc = $item_description("default:apple")'
 })