Unterstützung für Callback_Querys, allerdings weiß ich nicht, ob mir die aktuelle Lösung gefällt. Mal ne Nacht drüber schlafen.

otouto/utilities.lua

@@ -52,11 +52,12 @@ end
 
 -- NOTE: Telegram currently only allows file uploads up to 50 MB
 -- https://core.telegram.org/bots/api#sendphoto
-function utilities:send_photo(chat_id, file, text, reply_to_message_id)
+function utilities:send_photo(chat_id, file, text, reply_to_message_id, reply_markup	)
 	local output = bindings.request(self, 'sendPhoto', {
 		chat_id = chat_id,
 		caption = text or nil,
-		reply_to_message_id = reply_to_message_id
+		reply_to_message_id = reply_to_message_id,
+		reply_markup = reply_markup
 	}, {photo = file} )
 	os.remove(file)
 	print("Deleted: "..file)
@@ -149,6 +150,15 @@ function utilities:send_typing(chat_id, action)
 	} )
 end
 
+-- https://core.telegram.org/bots/api#answercallbackquery
+function utilities:answer_callback_query(callback, text, show_alert)
+	return bindings.request(self, 'answerCallbackQuery', {
+		callback_query_id = callback.id,
+		text = text,
+		show_alert = show_alert
+	} )
+end
+
  -- get the indexed word in a string
 function utilities.get_word(s, i)
 	s = s or ''