X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?p=lurk.git;a=blobdiff_plain;f=lurk.el;h=26eb8949d8a6adca12617bf90e1f303e2fda2331;hp=06df5154be817f9d8fff34693301052c2779b8cf;hb=8d3a7b25c3766e81cbbd0062b311c8bb6cf25abb;hpb=b0daf99266a79eebc1dfb40eb2906fa0a295f595

diff --git a/lurk.el b/lurk.el
index 06df515..26eb894 100644
--- a/lurk.el
+++ b/lurk.el
@@ -1,4 +1,4 @@
-;;; lurk.el --- Little Unified iRc Klient -*- lexical-binding:t -*-
+;;; lurk.el --- Little Uni-buffer iRc Klient -*- lexical-binding:t -*-
 
 ;; Copyright (C) 2021 Tim Vaughan
 
@@ -6,7 +6,7 @@
 ;; Created: 14 June 2021
 ;; Version: 1.0
 ;; Keywords: network
-;; Homepage: http://thelambdalab.xyz/erc
+;; Homepage: http://thelambdalab.xyz/lurk
 ;; Package-Requires: ((emacs "26"))
 
 ;; This file is not part of GNU Emacs.
@@ -35,77 +35,74 @@
 ;;
 
 (defgroup lurk nil
-  "Little Unified iRc Klient."
+  "Little Uni-buffer iRc Klient."
   :group 'network)
 
 (defcustom lurk-nick "plugd"
   "Default nick.")
-(defcustom lurk-full-name "plugd"
-  "Default full name.")
-(defcustom lurk-user-name "plugd"
-  "Default user name.")
+
+(defcustom lurk-default-quit-msg "Bye"
+  "Default quit message when none supplied.")
 
 (defcustom lurk-networks
   '(("libera" "irc.libera.chat" 6697)
     ("freenode" "chat.freenode.net" 6697)
+    ("tilde" "tilde.chat" 6697)
+    ("mbr" "mbrserver.com" 6667 :notls)
     ("local" "localhost" 6697))
   "IRC networks.")
 
 (defcustom lurk-allow-ipv6 nil
   "Set to non-nil to allow use of IPv6.")
 
+(defcustom lurk-show-joins nil
+  "Set to non-nil to be notified of joins, parts and quits.")
+
 ;;; Faces
 ;;
 
 (defface lurk-text
-  '((t :inherit font-lock-preprocessor-face))
+  '((t :inherit default))
   "Face used for Lurk text.")
 
-(defface lurk-your-nick
-  '((t :inherit font-lock-constant-face))
-  "Face used for highlighting your nick.")
-
 (defface lurk-prompt
-  '((t :inherit org-level-2))
+  '((t :inherit org-priority))
   "Face used for the prompt.")
 
 (defface lurk-context
-  '((t :inherit org-list-dt))
+  '((t :inherit org-tag))
   "Face used for the context name in the prompt.")
 
 (defface lurk-faded
-  '((t :inherit font-lock-preprocessor-face))
+  '((t :inherit org-agenda-dimmed-todo-face))
   "Face used for faded Lurk text.")
 
-(defface lurk-bold
-  '((t :inherit font-lock-function-name-face))
-  "Face used for bold Lurk text.")
+(defface lurk-timestamp
+  '((t :inherit org-agenda-dimmed-todo-face))
+  "Face used for timestamps.")
 
 (defface lurk-error
   '((t :inherit font-lock-regexp-grouping-construct))
   "Face used for Lurk error text.")
 
+(defface lurk-notice
+  '((t :inherit org-upcoming-deadline))
+  "Face used for Lurk notice text.")
+
 ;;; Global variables
 ;;
 
-(defvar lurk-version "Lurk v0.1")
-
-(defvar lurk-notice-prefix
-  (concat
-   (propertize
-    "-" 'face 'lurk-faded)
-   (propertize
-    "!" 'face 'lurk-bold)
-   (propertize
-    "-" 'face 'lurk-faded)))
+(defvar lurk-version "Lurk v0.1"
+  "Value of this string is used in response to CTCP version queries.")
 
-(defvar lurk-error-prefix
-  (propertize "!!!" 'face 'lurk-error))
+(defvar lurk-notice-prefix "-!-")
 
+(defvar lurk-error-prefix "!!!")
 
-(defvar lurk-prompt-string
-  (propertize "> " 'face 'lurk-prompt))
+(defvar lurk-prompt-string ">")
 
+(defvar lurk-debug nil
+  "If non-nil, enable debug mode.")
 
 ;;; Network process
 ;;
@@ -122,7 +119,7 @@
   (unless (equal "open" (string-trim string))
     (lurk-display-error "Disconnected from server.")
     (clrhash lurk-contexts)
-    (setq lurk-current-context nil)
+    (lurk-set-current-context nil)
     (lurk-render-prompt)
     (cancel-timer lurk-ping-timer)))
 
@@ -159,14 +156,19 @@
     (if (not (assoc network lurk-networks))
         (lurk-display-error "Network '" network "' is unknown.")
       (clrhash lurk-contexts)
-      (setq lurk-current-context nil)
+      (lurk-set-current-context nil)
       (lurk-start-process network)
-      (lurk-send-msg (lurk-msg nil nil "USER" lurk-user-name 0 "*" lurk-full-name))
+      (lurk-send-msg (lurk-msg nil nil "USER" lurk-nick 0 "*" lurk-nick))
       (lurk-send-msg (lurk-msg nil nil "NICK" lurk-nick))
       (setq lurk-ping-timer (run-with-timer lurk-ping-period nil #'lurk-ping-function)))))
 
+(defun lurk-connected-p ()
+  (let ((proc (get-process "lurk")))
+    (and proc (eq (process-status proc) 'open))))
 
 (defun lurk-send-msg (msg)
+  (if lurk-debug
+      (lurk-display-string nil nil (lurk-msg->string msg)))
   (let ((proc (get-process "lurk")))
     (if (and proc (eq (process-status proc) 'open))
         (process-send-string proc (concat (lurk-msg->string msg) "\r\n"))
@@ -250,14 +252,9 @@ portion of the source component of the message, as LURK doesn't use this.")
        nil))))
 
 
-;;; Contexts and users
+;;; Contexts
 ;;
 
-(defvar lurk-context-table
-  '((channel lurk-display-channel-message)
-    (nick lurk-display-private-message)
-    (host lurk-diaplay-server-message)))
-
 (defvar lurk-current-context nil)
 (defvar lurk-contexts (make-hash-table :test #'equal))
 
@@ -285,6 +282,11 @@ portion of the source component of the message, as LURK doesn't use this.")
   (dolist (context (lurk-get-context-list))
     (lurk-del-context-user context user)))
 
+(defun lurk-rename-user (old-nick new-nick)
+  (dolist (context (lurk-get-context-list))
+    (lurk-del-context-user context old-nick)
+    (lurk-add-context-users context (list new-nick))))
+
 (defun lurk-get-context-type (name)
   (cond
    ((string-prefix-p "#" name) 'channel)
@@ -309,39 +311,23 @@ portion of the source component of the message, as LURK doesn't use this.")
           (car context-list)))
     nil))
 
+(defun lurk-set-current-context (context)
+  (setq lurk-current-context context)
+  (lurk-highlight-context context)
+  (if lurk-zoomed
+      (lurk-zoom-in lurk-current-context)))
+
 (defun lurk-cycle-contexts (&optional rev)
   (if lurk-current-context
       (progn
-        (setq lurk-current-context (lurk-get-next-context rev))
+        (lurk-set-current-context (lurk-get-next-context rev))
         (lurk-render-prompt))
     (lurk-display-error "No channels joined.")))
 
-(defun lurk-cycle-contexts-forward ()
-  (interactive)
-  (lurk-cycle-contexts))
-
-(defun lurk-cycle-contexts-reverse ()
-  (interactive)
-  (lurk-cycle-contexts t))
 
 ;;; Buffer
 ;;
 
-(defun lurk-display-string (&rest strings)
-  (with-current-buffer (get-buffer-create "*lurk*")
-    (save-excursion
-      (goto-char lurk-prompt-marker)
-      (let ((inhibit-read-only t)
-            (old-pos (marker-position lurk-prompt-marker))
-            (adaptive-fill-regexp (rx (= 6 anychar))))
-        (insert-before-markers
-         (propertize (concat (format-time-string "%H:%M") " ")
-                     'face 'lurk-text
-                     'read-only t)
-         (propertize (concat (apply #'concat strings) "\n")
-                     'read-only t))
-        (fill-region old-pos lurk-prompt-marker)))))
-
 (defun lurk-render-prompt ()
   (with-current-buffer "*lurk*"
     (let ((update-point (= lurk-input-marker (point)))
@@ -361,7 +347,7 @@ portion of the source component of the message, as LURK doesn't use this.")
                          "")
                        'face 'lurk-context
                        'read-only t)
-           (propertize lurk-prompt-string
+           (propertize (concat lurk-prompt-string " ")
                        'face 'lurk-prompt
                        'read-only t
                        'rear-nonsticky t)))
@@ -380,6 +366,8 @@ portion of the source component of the message, as LURK doesn't use this.")
 
 (defun lurk-setup-buffer ()
   (with-current-buffer (get-buffer-create "*lurk*")
+    (setq-local scroll-conservatively 1)
+    (setq-local buffer-invisibility-spec nil)
     (if (markerp lurk-prompt-marker)
         (set-marker lurk-prompt-marker (point-max))
       (setq lurk-prompt-marker (point-max-marker)))
@@ -390,56 +378,190 @@ portion of the source component of the message, as LURK doesn't use this.")
     (lurk-render-prompt)))
 
 
-;;; Output formatting
+;;; Output formatting and highlighting
 ;;
 
-(defun lurk-display-message (from to text)
-  (let* ((to-type (lurk-get-context-type to))
-         (display-fun (cadr (assoc to-type lurk-context-table))))
-    (funcall display-fun from to text)))
+;; Partially-implemented idea: the face text property can be
+;; a list of faces, applied in order.  By assigning each context
+;; a unique list and keeping track of these in a hash table, we can
+;; easily switch the face corresponding to a particular context
+;; by modifying the elements of this list.
+;;
+;; More subtly, we make only the cdrs of this list shared among
+;; all text of a given context, allowing the cars to be different
+;; and for different elements of the context-specific text to have
+;; different styling.
+
+;; Additionally, we allow selective hiding of contexts via
+;; the buffer-invisibility-spec.
+
+(defvar lurk-context-facelists (make-hash-table :test 'equal)
+  "List of seen contexts and associated face lists.")
+
+(defun lurk-get-context-facelist (context)
+  (let ((facelist (gethash context lurk-context-facelists)))
+    (unless facelist
+      (setq facelist (list 'lurk-text))
+      (puthash context facelist lurk-context-facelists))
+    facelist))
+
+(defun lurk--fill-strings (col indent &rest strings)
+  (with-temp-buffer
+    (setq buffer-invisibility-spec nil)
+    (let ((fill-column col)
+          (adaptive-fill-regexp (rx-to-string `(= ,indent anychar))))
+      (apply #'insert strings)
+      (fill-region (point-min) (point-max) nil t)
+      (buffer-string))))
+
+(defun lurk-display-string (context prefix &rest strings)
+  (with-current-buffer (get-buffer-create "*lurk*")
+    (save-excursion
+      (goto-char lurk-prompt-marker)
+      (let* ((inhibit-read-only t)
+             (old-pos (marker-position lurk-prompt-marker))
+             (padded-timestamp (concat (format-time-string "%H:%M ")))
+             (padded-prefix (if prefix (concat prefix " ") ""))
+             (context-atom (if context (intern context) nil)))
+        (insert-before-markers
+         (lurk--fill-strings
+          80
+          (+ (length padded-timestamp)
+             (length padded-prefix))
+          (propertize padded-timestamp
+                      'face 'lurk-timestamp
+                      'read-only t
+                      'context context
+                      'invisible context-atom)
+          (propertize padded-prefix
+                      'read-only t
+                      'context context
+                      'invisible context-atom)
+          (propertize (concat (lurk-buttonify-urls (apply #'concat strings)) "\n")
+                      'face (lurk-get-context-facelist context)
+                      'read-only t
+                      'context context
+                      'invisible context-atom)))))))
 
-(defun lurk-display-channel-message (from to text)
-  (lurk-display-string
-   (propertize (concat to
-                       " <" from "> "
-                       text)
-               'face 'lurk-text)))
-               
-
-(defun lurk-display-action (channel-name nick action)
-  (lurk-display-string (concat channel-name
-                               " * "
-                               (propertize (concat nick " " action)
-                                           'face 'lurk-text))))
-
-(defun lurk-display-private-message (from to text)
+(defun lurk-display-message (from to text)
+  (let ((context (if (eq 'channel (lurk-get-context-type to))
+                     to
+                   (if (equal to lurk-nick) from to))))
+    (lurk-display-string
+     context
+     (propertize
+      (pcase (lurk-get-context-type to)
+        ('channel (concat to " <" from ">"))
+        ('nick (concat "[" from " -> " to "]"))
+        (_
+         (error "Unsupported context type")))
+      'face (lurk-get-context-facelist context))
+     text)))
+
+(defun lurk-display-action (from to action-text)
+  (let ((context (if (eq 'channel (lurk-get-context-type to))
+                     to
+                   (if (equal to lurk-nick) from to))))
+    (lurk-display-string
+     context
+     (concat "* " from)
+     action-text)))
+
+(defun lurk-display-notice (context &rest notices)
   (lurk-display-string
-   (concat
-    (propertize
-     (concat "[" from " -> " to "] "
-             text)
-     'face 'lurk-text))))
-        
-
-(defun lurk-display-notice (&rest notices)
-  (lurk-display-string lurk-notice-prefix " " (apply #'concat notices)))
+   context
+   (propertize lurk-notice-prefix 'face 'lurk-notice)
+   (apply #'concat notices)))
 
 (defun lurk-display-error (&rest messages)
-  (lurk-display-string lurk-error-prefix " "
-                       (propertize (apply #'concat messages)
-                                   'face 'lurk-error)))
+  (lurk-display-string
+   nil
+   (propertize lurk-error-prefix 'face 'lurk-error)
+   (apply #'concat messages)))
+
+(defun lurk-highlight-context (context)
+  (maphash
+   (lambda (this-context facelist)
+     (if (equal this-context context)
+         (setcar facelist 'lurk-text)
+       (setcar facelist 'lurk-faded)))
+   lurk-context-facelists)
+  (force-window-update "*lurk*"))
+
+(defun lurk-zoom-in (context)
+  (with-current-buffer "*lurk*"
+    (maphash
+     (lambda (this-context _)
+       (when this-context
+         (let ((this-context-atom (intern this-context)))
+           (if (equal this-context context)
+               (remove-from-invisibility-spec this-context-atom)
+             (add-to-invisibility-spec this-context-atom)))))
+     lurk-context-facelists)
+    (force-window-update "*lurk*")))
+
+(defun lurk-zoom-out ()
+  (with-current-buffer "*lurk*"
+    (maphash
+     (lambda (this-context _)
+       (let ((this-context-atom (if this-context (intern this-context) nil)))
+         (remove-from-invisibility-spec this-context-atom)))
+     lurk-context-facelists)
+    (force-window-update "*lurk*")))
+
+(defconst lurk-url-regex
+  (rx (:
+       (group (+ alpha))
+       "://"
+       (group (or (+ (any alnum "." "-"))
+                  (+ (any alnum ":"))))
+       (opt (group (: ":" (+ digit))))
+       (opt (group (: "/"
+                      (opt
+                       (* (any alnum "-/.,#:%=&_"))
+                       (any alnum "-/#:%=&_")))))))
+  "Imperfect regex used to find URLs in plain text.")
+
+(defun lurk-click-url (button)
+  (browse-url (button-get button 'url)))
+
+(defun lurk-buttonify-urls (string)
+  "Turn substrings which look like urls in STRING into clickable buttons."
+  (with-temp-buffer
+    (insert string)
+    (goto-char (point-min))
+    (while (re-search-forward lurk-url-regex nil t)
+      (let ((url (match-string 0)))
+        (make-text-button (match-beginning 0)
+                          (match-end 0)
+                          'action #'lurk-click-url
+                          'url url
+                          'follow-link t
+                          'face 'button
+                          'help-echo "Open URL in browser.")))
+    (buffer-string)))
+
 
 ;;; Message evaluation
 ;;
 
 (defun lurk-eval-msg-string (string)
-  ;; (lurk-display-string string)
+  (if lurk-debug
+      (lurk-display-string nil nil string))
   (let* ((msg (lurk-string->msg string)))
     (pcase (lurk-msg-cmd msg)
       ("PING"
        (lurk-send-msg
-        (lurk-msg nil nil "PONG" (lurk-msg-params msg)))
-       (lurk-display-notice "ping-pong"))
+        (lurk-msg nil nil "PONG" (lurk-msg-params msg))))
+
+      ("PONG")
+
+      ("001"
+       (let* ((params (lurk-msg-params msg))
+              (nick (elt params 0))
+              (text (string-join (seq-drop params 1) " ")))
+         (setq lurk-nick nick)
+         (lurk-display-notice nil text)))
 
       ("353" ; NAMEREPLY
        (let* ((params (lurk-msg-params msg))
@@ -448,58 +570,94 @@ portion of the source component of the message, as LURK doesn't use this.")
          (lurk-add-context-users channel names)))
 
       ("366" ; ENDOFNAMES
-       (lurk-display-notice
-        (lurk--as-string (length (lurk-get-context-users lurk-current-context)))
-        " users in " lurk-current-context))
+       (let* ((params (lurk-msg-params msg))
+              (channel (elt params 1)))
+         (lurk-display-notice
+          channel
+          (lurk--as-string (length (lurk-get-context-users channel)))
+          " users in " channel)))
+
+      ("331"
+       (let* ((params (lurk-msg-params msg))
+              (channel (elt params 1)))
+         (lurk-display-notice
+          channel
+          "No topic set.")))
+
+      ("332"
+       (let* ((params (lurk-msg-params msg))
+              (channel (elt params 1))
+              (topic (elt params 2)))
+         (lurk-display-notice channel "Topic: " topic)))
+
+      ("333") ; Avoid displaying these
 
       ((rx (= 3 (any digit)))
-       (lurk-display-notice (mapconcat 'identity (cdr (lurk-msg-params msg)) " ")))
+       (lurk-display-notice nil (mapconcat 'identity (cdr (lurk-msg-params msg)) " ")))
 
       ((and "JOIN"
             (guard (equal lurk-nick (lurk-msg-src msg))))
-       (let ((channel-name (car (lurk-msg-params msg))))
-         (lurk-add-context channel-name)
-         (setq lurk-current-context channel-name)
-         (lurk-display-notice "Joining channel " channel-name)
+       (let ((channel (car (lurk-msg-params msg))))
+         (lurk-add-context channel)
+         (lurk-set-current-context channel)
+         (lurk-display-notice channel "Joining channel " channel)
          (lurk-render-prompt)))
 
       ("JOIN"
-       (let ((channel-name (car (lurk-msg-params msg)))
+       (let ((channel (car (lurk-msg-params msg)))
              (nick (lurk-msg-src msg)))
-         (lurk-add-context-users channel-name (list nick))
-         (lurk-display-notice nick " joined channel " channel-name)))
+         (lurk-add-context-users channel (list nick))
+         (if lurk-show-joins
+             (lurk-display-notice channel nick " joined channel " channel))))
 
       ((and "PART"
             (guard (equal lurk-nick (lurk-msg-src msg))))
-       (let ((channel-name (car (lurk-msg-params msg))))
-         (lurk-display-notice "Left channel " channel-name)
-         (lurk-del-context channel-name)
-         (if (equal channel-name lurk-current-context)
-             (setq lurk-current-context (lurk-get-next-context)))
+       (let ((channel (car (lurk-msg-params msg))))
+         (lurk-display-notice channel "Left channel " channel)
+         (lurk-del-context channel)
+         (if (equal channel lurk-current-context)
+             (lurk-set-current-context (lurk-get-next-context)))
          (lurk-render-prompt)))
 
       ("PART"
-       (let ((channel-name (car (lurk-msg-params msg)))
+       (let ((channel (car (lurk-msg-params msg)))
              (nick (lurk-msg-src msg)))
-         (lurk-del-context-user channel-name nick)
-         (lurk-display-notice nick " left channel " channel-name)))
+         (lurk-del-context-user channel nick)
+         (if lurk-show-joins
+             (lurk-display-notice channel nick " left channel " channel))))
+
+      ((and "KICK")
+       (let ((kicker-nick (lurk-msg-src msg))
+             (channel (car (lurk-msg-params msg)))
+             (nick (cadr (lurk-msg-params msg)))
+             (reason (caddr (lurk-msg-params msg))))
+         (if (equal nick lurk-nick)
+             (progn
+               (lurk-display-notice channel kicker-nick " kicked you from " channel ": " reason)
+               (lurk-del-context channel)
+               (if (equal channel lurk-current-context)
+                   (lurk-set-current-context (lurk-get-next-context)))
+               (lurk-render-prompt))
+           (lurk-del-context-user channel nick)
+           (lurk-display-notice channel kicker-nick " kicked " nick " from " channel ": " reason))))
 
       ("QUIT"
        (let ((nick (lurk-msg-src msg))
              (reason (mapconcat 'identity (lurk-msg-params msg) " ")))
          (lurk-del-user nick)
-         (lurk-display-notice nick " quit: " reason)))
+         (if lurk-show-joins
+             (lurk-display-notice nil nick " quit: " reason))))
 
       ((and "NICK"
             (guard (equal lurk-nick (lurk-msg-src msg))))
        (setq lurk-nick (car (lurk-msg-params msg)))
-       (lurk-display-notice "Set nick to " lurk-nick))
+       (lurk-display-notice nil "Set nick to " lurk-nick))
 
       ("NICK"
        (let ((old-nick (lurk-msg-src msg))
              (new-nick (car (lurk-msg-params msg))))
-         (lurk-display-notice nick " is now known as " new-nick)
-         (lurk-rename-user nick new-nick)))
+         (lurk-display-notice nil old-nick " is now known as " new-nick)
+         (lurk-rename-user old-nick new-nick)))
 
       ("NOTICE"
        (let ((nick (lurk-msg-src msg))
@@ -509,9 +667,9 @@ portion of the source component of the message, as LURK doesn't use this.")
            ((rx (: "\01VERSION "
                    (let version (* (not "\01")))
                    "\01"))
-            (lurk-display-notice "CTCP version reply from " nick ": " version))
+            (lurk-display-notice nil "CTCP version reply from " nick ": " version))
            (_
-            (lurk-display-notice text)))))
+            (lurk-display-notice nil text)))))
 
       ("PRIVMSG"
        (let* ((from (lurk-msg-src msg))
@@ -525,19 +683,22 @@ portion of the source component of the message, as LURK doesn't use this.")
                                        (list from (concat "\01VERSION "
                                                           version-string
                                                           "\01")))))
-            (lurk-display-notice "CTCP version request received from " from))
+            (lurk-display-notice nil "CTCP version request received from " from))
 
            ((rx (let ping (: "\01PING " (* (not "\01")) "\01")))
             (lurk-send-msg (lurk-msg nil nil "NOTICE" (list from ping)))
-            (lurk-display-notice "CTCP ping received from " from))
+            (lurk-display-notice from "CTCP ping received from " from))
 
            ("\01USERINFO\01"
-            (lurk-display-notice "CTCP userinfo request from " from " (no response sent)"))
+            (lurk-display-notice from "CTCP userinfo request from " from " (no response sent)"))
+
+           ((rx (: "\01ACTION " (let action-text (* (not "\01"))) "\01"))
+            (lurk-display-action from to action-text))
 
            (_
             (lurk-display-message from to text)))))
       (_
-       (lurk-display-string (lurk-msg->string msg))))))
+       (lurk-display-notice nil (lurk-msg->string msg))))))
 
 
 ;;; Command entering
@@ -546,23 +707,27 @@ portion of the source component of the message, as LURK doesn't use this.")
 (defun lurk-enter-string (string)
   (if (string-prefix-p "/" string)
       (pcase (substring string 1)
+        ((rx "DEBUG")
+         (setq lurk-debug (not lurk-debug))
+         (lurk-display-notice nil "Debug mode now " (if lurk-debug "on" "off") "."))
+
         ((rx (: "CONNECT " (let network (* not-newline))))
-         (lurk-display-notice "Attempting to connect to " network "...")
+         (lurk-display-notice nil "Attempting to connect to " network "...")
          (lurk-connect network))
 
         ((rx (: "TOPIC " (let new-topic (* not-newline))))
          (lurk-send-msg (lurk-msg nil nil "TOPIC" lurk-current-context new-topic)))
 
         ((rx (: "ME " (let action (* not-newline))))
-         (lurk-send-msg (lurk-msg nil nil "PRIVMSG"
-                                  (list lurk-current-context
-                                        (concat "\01ACTION " action "\01"))))
-         (lurk-display-action lurk-nick action))
+         (let ((ctcp-text (concat "\01ACTION " action "\01")))
+           (lurk-send-msg (lurk-msg nil nil "PRIVMSG"
+                                    (list lurk-current-context ctcp-text)))
+           (lurk-display-action lurk-nick lurk-current-context action)))
 
-        ((rx (: "VERSION" " " (let nick (* (not whitespace)))))
+        ((rx (: "VERSION" " " (let nick (+ (not whitespace)))))
          (lurk-send-msg (lurk-msg nil nil "PRIVMSG"
                                   (list nick "\01VERSION\01")))
-         (lurk-display-notice "CTCP version request sent to " nick))
+         (lurk-display-notice nil "CTCP version request sent to " nick))
 
         ((rx "PART" (opt (: " " (let channel (* not-newline)))))
          (if (or lurk-current-context channel)
@@ -571,6 +736,25 @@ portion of the source component of the message, as LURK doesn't use this.")
                                                        lurk-current-context)))
            (lurk-display-error "No current channel to leave.")))
 
+        ((rx "QUIT" (opt (: " " (let quit-msg (* not-newline)))))
+         (lurk-send-msg (lurk-msg nil nil "QUIT"
+                                  (or quit-msg lurk-default-quit-msg))))
+
+        ((rx (: "NICK" (* whitespace) string-end))
+         (lurk-display-notice nil "Current nick: " lurk-nick))
+
+        ((rx (: "NICK" (+ whitespace) (let nick (+ (not whitespace)))))
+         (if (lurk-connected-p)
+             (lurk-send-msg (lurk-msg nil nil "NICK" nick))
+           (setq lurk-nick nick)
+           (lurk-display-notice nil "Set default nick to '" nick "'")))
+
+        ((rx "LIST")
+         (lurk-display-notice nil "This command can generate lots of output. Use `LIST -yes' if you're sure."))
+
+        ((rx (: "LIST" (+ whitespace) "-YES"))
+         (lurk-send-msg (lurk-msg nil nil "LIST")))
+
         ((rx "MSG "
              (let to (* (not whitespace)))
              " "
@@ -594,14 +778,73 @@ portion of the source component of the message, as LURK doesn't use this.")
             (lurk-display-message lurk-nick lurk-current-context string))
         (lurk-display-error "No current context.")))))
 
+(defvar lurk-history nil
+  "Commands and messages sent in current session.")
+
+
 (defun lurk-enter ()
   "Enter current contents of line after prompt."
   (interactive)
   (with-current-buffer "*lurk*"
-    (lurk-enter-string
-     (buffer-substring lurk-input-marker (point-max)))
-    (let ((inhibit-read-only t))
-      (delete-region lurk-input-marker (point-max)))))
+    (let ((line (buffer-substring lurk-input-marker (point-max))))
+      (push line lurk-history)
+      (setq lurk-history-index nil)
+      (let ((inhibit-read-only t))
+        (delete-region lurk-input-marker (point-max)))
+      (lurk-enter-string line))))
+
+(defvar lurk-history-index nil)
+
+(defun lurk-history-cycle (delta)
+  (when lurk-history
+    (with-current-buffer "*lurk*"
+      (if lurk-history-index
+          (setq lurk-history-index
+                (max 0
+                     (min (- (length lurk-history) 1)
+                          (+ delta lurk-history-index))))
+        (setq lurk-history-index 0))
+      (delete-region lurk-input-marker (point-max))
+      (insert (elt lurk-history lurk-history-index)))))
+
+(defun lurk-history-next ()
+  (interactive)
+  (lurk-history-cycle -1))
+
+(defun lurk-history-prev ()
+  (interactive)
+  (lurk-history-cycle +1))
+
+;;; Interactive functions
+;;
+
+(defun lurk-cycle-contexts-forward ()
+  (interactive)
+  (lurk-cycle-contexts))
+
+(defun lurk-cycle-contexts-reverse ()
+  (interactive)
+  (lurk-cycle-contexts t))
+
+(defvar lurk-zoomed nil
+  "Keeps track of zoom status.")
+
+(defun lurk-toggle-zoom ()
+  (interactive)
+  (if lurk-zoomed
+      (lurk-zoom-out)
+    (lurk-zoom-in lurk-current-context))
+  (setq lurk-zoomed (not lurk-zoomed)))
+
+(defun lurk-complete-nick ()
+  (interactive)
+  (when (and (>= (point) lurk-input-marker) lurk-current-context)
+    (let* ((end (max lurk-input-marker (point)))
+           (space-idx (save-excursion
+                        (re-search-backward " " lurk-input-marker t)))
+           (start (if space-idx (+ 1 space-idx) lurk-input-marker)))
+      (unless (string-prefix-p "/" (buffer-substring start end))
+        (completion-in-region start end (lurk-get-context-users lurk-current-context))))))
 
 
 ;;; Mode
@@ -610,10 +853,20 @@ portion of the source component of the message, as LURK doesn't use this.")
 (defvar lurk-mode-map
   (let ((map (make-sparse-keymap)))
     (define-key map (kbd "RET") 'lurk-enter)
+    (define-key map (kbd "<tab>") 'lurk-complete-nick)
+    (define-key map (kbd "C-c C-z") 'lurk-toggle-zoom)
     (define-key map (kbd "<C-tab>") 'lurk-cycle-contexts-forward)
     (define-key map (kbd "<C-S-tab>") 'lurk-cycle-contexts-reverse)
+    (define-key map (kbd "<C-up>") 'lurk-history-prev)
+    (define-key map (kbd "<C-down>") 'lurk-history-next)
+    ;; (when (fboundp 'evil-define-key*)
+    ;;   (evil-define-key* 'insert map
+    ;;                     (kbd "<C-Up>") 'lurk-history-prev
+    ;;                     (kbd "<C-Down>") 'lurk-history-next))
     map))
 
+(defvar lurk-mode-map)
+
 (define-derived-mode lurk-mode text-mode "lurk"
   "Major mode for LURK.")
 
@@ -628,11 +881,10 @@ portion of the source component of the message, as LURK doesn't use this.")
   (interactive)
   (if (get-buffer "*lurk*")
       (switch-to-buffer "*lurk*")
-    (switch-to-buffer "*lurk*"))
-  (lurk-mode)
-  (lurk-setup-buffer)
+    (switch-to-buffer "*lurk*")
+    (lurk-mode)
+    (lurk-setup-buffer))
   "Started LURK.")
 
 
-
 ;;; lurk.el ends here