From b0f2d7fc3c184431f2bf1eab81c8b93eaefd16a3 Mon Sep 17 00:00:00 2001
From: Patrick Peng Sun <patrick@lawipac.com>
Date: Thu, 13 Jul 2017 19:23:07 +1000
Subject: [PATCH] safe guard empty message will not produce "BUG" message, it's
 legit

---
 wechatMsg.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wechatMsg.go b/wechatMsg.go
index ab52150..7f17bd9 100644
--- a/wechatMsg.go
+++ b/wechatMsg.go
@@ -35,6 +35,9 @@ func (m *InWechatMsg) replyXML(xml string) {
 }
 
 func (m *InWechatMsg) replyText(s string) {
+	if s == "" && m.replied == true {
+		return //skip safeguard empty message
+	}
 	str, _ := BuildTextMsg(m.header.FromUserName, s)
 	m.replyXML(str)
 }