1 files changed, 11 insertions, 5 deletions

diff --git a/libgo/go/net/smtp/smtp.go b/libgo/go/net/smtp/smtp.go
index 0988350322..a408fa5336 100644
--- a/libgo/go/net/smtp/smtp.go
+++ b/libgo/go/net/smtp/smtp.go
@@ -8,12 +8,18 @@
 //	AUTH      RFC 2554
 //	STARTTLS  RFC 3207
 // Additional extensions may be handled by clients.
+//
+// The smtp package is frozen and is not accepting new features.
+// Some external packages provide more functionality. See:
+//
+//   https://godoc.org/?q=smtp
 package smtp
 
 import (
 	"crypto/tls"
 	"encoding/base64"
 	"errors"
+	"fmt"
 	"io"
 	"net"
 	"net/textproto"
@@ -83,8 +89,8 @@ func (c *Client) hello() error {
 
 // Hello sends a HELO or EHLO to the server as the given host name.
 // Calling this method is only necessary if the client needs control
-// over the host name used.  The client will introduce itself as "localhost"
-// automatically otherwise.  If Hello is called, it must be called before
+// over the host name used. The client will introduce itself as "localhost"
+// automatically otherwise. If Hello is called, it must be called before
 // any of the other methods.
 func (c *Client) Hello(localName string) error {
 	if c.didHello {
@@ -195,7 +201,7 @@ func (c *Client) Auth(a Auth) error {
 	}
 	resp64 := make([]byte, encoding.EncodedLen(len(resp)))
 	encoding.Encode(resp64, resp)
-	code, msg64, err := c.cmd(0, "AUTH %s %s", mech, resp64)
+	code, msg64, err := c.cmd(0, strings.TrimSpace(fmt.Sprintf("AUTH %s %s", mech, resp64)))
 	for err == nil {
 		var msg []byte
 		switch code {
@@ -265,7 +271,7 @@ func (d *dataCloser) Close() error {
 
 // Data issues a DATA command to the server and returns a writer that
 // can be used to write the mail headers and body. The caller should
-// close the writer before calling any more methods on c.  A call to
+// close the writer before calling any more methods on c. A call to
 // Data must be preceded by one or more calls to Rcpt.
 func (c *Client) Data() (io.WriteCloser, error) {
 	_, _, err := c.cmd(354, "DATA")
@@ -287,7 +293,7 @@ var testHookStartTLS func(*tls.Config) // nil, except for tests
 //
 // The msg parameter should be an RFC 822-style email with headers
 // first, a blank line, and then the message body. The lines of msg
-// should be CRLF terminated.  The msg headers should usually include
+// should be CRLF terminated. The msg headers should usually include
 // fields such as "From", "To", "Subject", and "Cc".  Sending "Bcc"
 // messages is accomplished by including an email address in the to
 // parameter but not including it in the msg headers.