+ (pcase (lirc-msg-cmd msg)
+ ("PING"
+ (lirc-send-msg
+ (lirc-msg nil nil "PONG" (lirc-msg-params msg)))
+ (lirc-display-notice "ping-pong"))
+
+ ("353" ; NAMEREPLY
+ (let* ((params (lirc-msg-params msg))
+ (channel (elt params 2))
+ (names (split-string (elt params 3))))
+ (apply #'lirc-add-channel-users (cons channel names))))
+
+ ("366" ; ENDOFNAMES
+ (lirc-display-notice
+ (lirc-as-string (length (lirc-get-channel-users lirc-current-channel)))
+ " users in " lirc-current-channel))
+
+ ((rx (= 3 (any digit)))
+ (lirc-display-notice (mapconcat 'identity (cdr (lirc-msg-params msg)) " ")))
+
+ ((and "JOIN"
+ (guard (equal lirc-nick (lirc-msg-src msg))))
+ (let ((channel (car (lirc-msg-params msg))))
+ (setq lirc-current-channel channel)
+ (lirc-add-channel channel)
+ (lirc-display-notice "Joining channel " channel)
+ (lirc-render-prompt)))
+
+ ("JOIN"
+ (let ((channel (car (lirc-msg-params msg)))
+ (nick (lirc-msg-src msg)))
+ (lirc-add-channel-users channel nick)
+ (lirc-display-notice nick " joined channel " channel)))
+
+ ((and "PART"
+ (guard (equal lirc-nick (lirc-msg-src msg))))
+ (let ((channel (car (lirc-msg-params msg))))
+ (lirc-display-notice "Left channel " channel)
+ (lirc-del-channel (car (lirc-msg-params msg)))
+ (when (equal lirc-current-channel channel)
+ (setq lirc-current-channel nil)
+ (lirc-render-prompt))))
+
+ ("PART"
+ (let ((channel (car (lirc-msg-params msg)))
+ (nick (lirc-msg-src msg)))
+ (lirc-del-channel-users channel nick)
+ (lirc-display-notice nick " left channel " channel)))
+
+ ("QUIT"
+ (let ((nick (lirc-msg-src msg))
+ (reason (mapconcat 'identity (lirc-msg-params msg) " ")))
+ (lirc-del-users nick)
+ (lirc-display-notice nick " quit: " reason)))
+
+ ((and "NICK"
+ (guard (equal lirc-nick (lirc-msg-src msg))))
+ (setq lirc-nick (car (lirc-msg-params msg)))
+ (lirc-display-notice "Set nick to " lirc-nick))
+
+ ("NICK"
+ (let ((old-nick (lirc-msg-src msg))
+ (new-nick (car (lirc-msg-params msg))))
+ (lirc-display-notice nick " is now known as " new-nick)
+ (lirc-rename-user nick new-nick)))
+
+ ("NOTICE"
+ (let ((nick (lirc-msg-src msg))
+ (channel (car (lirc-msg-params msg)))
+ (text (cadr (lirc-msg-params msg))))
+ (pcase text
+ ((rx (: "\01VERSION "
+ (let version (* (not "\01")))
+ "\01"))
+ (lirc-display-notice "CTCP version reply from " nick ": " version))
+ (_
+ (lirc-display-notice text)))))
+
+ ("PRIVMSG"
+ (let ((nick (lirc-msg-src msg))
+ (channel (car (lirc-msg-params msg)))
+ (text (cadr (lirc-msg-params msg))))
+ (pcase text
+ ((rx (: "\01ACTION "
+ (let action (* (not "\01")))
+ "\01"))
+ (lirc-display-action nick action))
+
+ ("\01VERSION\01"
+ (let ((version-string (concat lirc-version " - running on GNU Emacs " emacs-version)))
+ (lirc-send-msg (lirc-msg nil nil "NOTICE"
+ (list nick (concat "\01VERSION "
+ version-string
+ "\01")))))
+ (lirc-display-notice "CTCP version request received from " nick))
+
+ ((rx (let ping (: "\01PING " (* (not "\01")) "\01")))
+ (lirc-send-msg (lirc-msg nil nil "NOTICE" (list nick ping)))
+ (lirc-display-notice "CTCP ping received from " nick))
+
+ ("\01USERINFO\01"
+ (lirc-display-notice "CTCP userinfo request from " nick " (no response sent)"))
+
+ (_
+ (lirc-display-message channel nick text)))))
+ (_
+ (lirc-display-string (lirc-msg->string msg))))))