From 38d78bafe419ff4fe38b256526b07d45d463faa2 Mon Sep 17 00:00:00 2001
From: Andrew Tunnell-Jones <andrew@tj.id.au>
Date: Sat, 1 Mar 2014 22:30:52 +0000
Subject: [PATCH] Escape @ when printing/unpacking domain names

---
 msg.go   | 2 +-
 types.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/msg.go b/msg.go
index 20877e8e..5e9e1bc8 100644
--- a/msg.go
+++ b/msg.go
@@ -403,7 +403,7 @@ Loop:
 			}
 			for j := off; j < off+c; j++ {
 				switch b := msg[j]; b {
-				case '.', '(', ')', ';', ' ':
+				case '.', '(', ')', ';', ' ', '@':
 					fallthrough
 				case '"', '\\':
 					s = append(s, '\\', b)
diff --git a/types.go b/types.go
index 19058c15..2b6ce8a4 100644
--- a/types.go
+++ b/types.go
@@ -480,7 +480,7 @@ func sprintTxt(txt []string) string {
 }
 
 func appendDomainNameByte(s []byte, b byte) []byte {
-	if b == '.' || b == '(' || b == ')' || b == ';' || b == ' ' || b == '\'' {
+	if b == '.' || b == '(' || b == ')' || b == ';' || b == ' ' || b == '\'' || b == '@' {
 		return append(s, '\\', b)
 	}
 	return appendTXTStringByte(s, b)