hunk.code_window: 	targetUsername = strings.SplitN(message, " ", 2)[0]
   	targetUsername = strings.TrimPrefix(targetUsername, "@")
   	var userProfile *model.User
   	if result := <-app.Srv.Store.User().GetByUsername(targetUsername); result.Err != nil {
   		c.Err = result.Err
   		return &model.CommandResponse{Text: c.T("api.command_msg.missing.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
   	} else {
   		userProfile = result.Data.(*model.User)
   	}
  
hunk.labels: keep keep keep keep keep replace keep keep keep keep
hunk.after_edit: 		l4g.Error(result.Err.Error())
  
hunk.file_path: api/command_msg.go
hunk.type: replace
file: package dns
  
  import "encoding/binary"
  
  // rawSetRdlength sets the rdlength in the header of
  // the RR. The offset 'off' must be positioned at the
  // start of the header of the RR, 'end' must be the
  // end of the RR.
  func rawSetRdlength(msg []byte, off, end int) bool {
  	l := len(msg)
  Loop:
  	for {
  		if off+1 > l {
  			return false
  		}
  		c := int(msg[off])
  		off++
  		switch c & 0xC0 {
  		case 0x00:
  			if c == 0x00 {
  				// End of the domainname
  				break Loop
  			}
  			if off+c > l {
  				return false
  			}
  			off += c
  
  		case 0xC0:
  			// pointer, next byte included, ends domainname
  			off++
  			break Loop
  		}
  	}
  	// The domainname has been seen, we at the start of the fixed part in the header.
  	// Type is 2 bytes, class is 2 bytes, ttl 4 and then 2 bytes for the length.
  	off += 2 + 2 + 4
  	if off+2 > l {
  		return false
  	}
  	//off+1 is the end of the header, 'end' is the end of the rr
  	//so 'end' - 'off+2' is the length of the rdata
  	rdatalen := end - (off + 2)
  	if rdatalen > 0xFFFF {
  		return false
  	}
  	binary.BigEndian.PutUint16(msg[off:], uint16(rdatalen))
  	return true
  }
  