Fix retrieving only 1 message in /history

telegram/commands.go

@@ -676,12 +676,21 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 			}
 		}
 
-		messages, err := c.client.GetChatHistory(&client.GetChatHistoryRequest{
-			ChatID: chatID,
-			Limit:  limit,
-		})
-		if err != nil {
-			return err.Error(), true
+		var messages *client.Messages
+		var err error
+		for _ = range make([]struct{}, 2) {
+			messages, err = c.client.GetChatHistory(&client.GetChatHistoryRequest{
+				ChatID: chatID,
+				Limit:  limit,
+			})
+			if err != nil {
+				return err.Error(), true
+			}
+
+			// TDlib yields only the latest message on the first request
+			if !(len(messages.Messages) == 1 && limit > 1) {
+				break
+			}
 		}
 
 		c.sendMessagesReverse(chatID, messages.Messages)