Added ClientMode.Prefix() function

client.go

@@ -98,11 +98,7 @@ func (c *Client) joinChannel(channelName string) {
 
 		nickKey := strings.ToLower(client.nick)
 		if mode, exists := channel.modeMap[nickKey]; exists {
-			if mode.operator {
-				prefix = "@"
-			} else if mode.voice {
-				prefix = "+"
-			}
+			prefix = mode.Prefix()
 		}
 
 		nicks = append(nicks, fmt.Sprintf("%s%s", prefix, client.nick))

rosella.go

@@ -65,6 +65,16 @@ type ClientMode struct {
 	voice    bool //Has voice
 }
 
+func (m *ClientMode) Prefix() string {
+	if m.operator {
+		return "@"
+	} else if m.voice {
+		return "+"
+	} else {
+		return ""
+	}
+}
+
 type signalCode int
 
 const (