fix up MODE behavior to allow /mode <not-your-nick> and show per-channel modes, fixes #29

irc/modes.go

 		}
 	}
 
-	// Who should get these replies?
 	if len(changes) > 0 {
-		client.Reply(RplMode(client, target, changes))
+		client.Reply(RplModeChanges(client, target, changes))
+	} else if client == target {
+		client.RplUModeIs(client)
 	}
+	client.Reply(RplCurrentMode(client, target))
 }
 
 func (msg *ChannelModeCommand) HandleServer(server *Server) {

irc/reply.go

 	return NewStringReply(client, PART, "%s :%s", channel, message)
 }
 
-func RplMode(client *Client, target *Client, changes ModeChanges) string {
+func RplModeChanges(client *Client, target *Client, changes ModeChanges) string {
 	return NewStringReply(client, MODE, "%s :%s", target.Nick(), changes)
 }
 
+func RplCurrentMode(client *Client, target *Client) string {
+	globalFlags := ""
+	for mode, _ := range target.flags {
+		globalFlags += mode.String()
+	}
+
+	perChannelFlags := ""
+	for channel, _ := range target.channels {
+		perChannelFlags += fmt.Sprintf(" %s:%s", channel.name, channel.members[target])
+	}
+
+	response := fmt.Sprintf("All user modes: %s%s", globalFlags, perChannelFlags)
+	return NewStringReply(client, NOTICE, "%s :%s", target.Nick(), response)
+}
+
 func RplChannelMode(client *Client, channel *Channel,
 	changes ChannelModeChanges) string {
 	return NewStringReply(client, MODE, "%s %s", channel, changes)