Further customize ERC

I also added acdw-erc.el.

init.el

@@ -260,22 +260,35 @@
 
 ;; I don't really use ERC that much, but if/when I start ... I'll be ready.
 (setup erc
-  (:option erc-track-position-in-mode-line 'before-modes
-           erc-hide-list '("329" "332" "333" "353" "MODE"
-                           "TOPIC" "JOIN" "PART" "QUIT" "NICK"))
-  ;; https://www.emacswiki.org/emacs/ErcModeline#h5o-1
-  (defface erc-header-line-disconnected
-    '((t (:foreground "black" :background "indianred")))
-    "Face to use when ERC has been disconnected.")
+  (:require acdw-erc)
+  (:also-load erc-autoaway
+              erc-track)
   
-  (defun erc-update-header-line-show-disconnected ()
-    "Use a different face in the header-line when disconnected."
-    (erc-with-server-buffer
-     (cond ((erc-server-process-alive) 'erc-header-line)
-           (t 'erc-header-line-disconnected))))
-  
-  (:option erc-header-line-face-method
-           #'erc-update-header-line-show-disconnected))
+  (:option erc-auto-discard-away t
+           erc-autoaway-idle-seconds 600
+           erc-autojoin-channels-alist '(("libera.chat"
+                                          "#emacs" "##webpals")
+                                         ("tilde.chat"
+                                          "#meta" "#team" "#gemini"))
+           erc-header-line-face-method
+           #'erc/update-header-line-show-disconnected
+           erc-hide-list '("JOIN" "NICK" "PART" "QUIT" "MODE"
+                           "324" "329" "332" "333" "353" "477")
+           erc-interpret-mirc-color t
+           erc-kill-buffer-on-part t
+           erc-kill-queries-on-quit t
+           erc-kill-server-buffer-on-quit t
+           erc-nick "acdw"
+           erc-prompt-for-password nil ; use ~/.authinfo
+           erc/servers '("irc.libera.chat"
+                         "irc.tilde.chat")
+           erc-server-coding-system '(utf-8 . utf-8)
+           erc-track-exclude-types erc-hide-list
+           erc-track-position-in-mode-line 'before-modes)
+
+  (:hook erc-autoaway-mode
+	     erc-track-mode
+	     erc-truncate-mode))
 
 (setup eshell
   (:option eshell-directory-name (acdw/dir "eshell/" t)

lisp/acdw-erc.el

@@ -0,0 +1,85 @@
+;;; acdw-erc.el -*- lexical-binding: t; coding: utf-8-unix -*-
+
+;; Author: Case Duckworth <acdw@acdw.net>
+;; Created: 24 May 2021
+;; Keywords: configuration
+;; URL: https://tildegit.org/acdw/emacs
+
+;; This file is NOT part of GNU Emacs.
+
+;;; License:
+;; Everyone is permitted to do whatever with this software, without
+;; limitation.  This software comes without any warranty whatsoever,
+;; but with two pieces of advice:
+;; - Don't hurt yourself.
+;; - Make good choices.
+
+;;; Commentary:
+;; `acdw-erc' is a dumping ground for functions and stuff for ERC, so they
+;; don't clutter up `init.el'.
+
+;;; Code:
+
+(defgroup acdw-erc nil
+  "Customizations for ERC."
+  :group 'erc)
+
+
+;;; Show a different header-line face when ERC is disconnected.
+;; https://www.emacswiki.org/emacs/ErcModeline#h5o-1
+
+(defface erc/header-line-disconnected
+  '((t (:foreground "black" :background "indianred")))
+  "Face to use when ERC has been disconnected.")
+
+(defun erc/update-header-line-show-disconnected ()
+  "Use a different face in the header-line when disconnected."
+  (erc-with-server-buffer
+    (cond ((erc-server-process-alive) 'erc-header-line)
+          (t 'erc/header-line-disconnected))))
+
+
+;;; Convenience functions
+;; from Prelude:
+;; https://github.com/bbatsov/prelude/blob/master/modules/prelude-erc.el#L114
+
+(defcustom erc/servers nil
+  "The list of IRC servers to connect to with `erc/connect'."
+  :type '(list string))
+
+(defcustom erc/bye-message "See You Space Cowpokes."
+  "Quit message sent when calling `erc/disconnect'."
+  :type 'string)
+
+(defun connect-to-erc (server &optional use-tls port nick)
+  "Connects to IRC SERVER at PORT with NICK.
+If USE-TLS is non-nil, use TLS."
+  (let* ((use-tls (or use-tls t))
+         (erc-fn (if use-tls #'erc-tls #'erc))
+         (port (or port (if use-tls 6697 6667)))
+         (nick (or nick erc-nick)))
+    (funcall erc-fn
+             :server server
+             :port port
+             :nick nick)))
+
+(defun erc/connect ()
+  "Connect to all the servers in `erc/servers'."
+  (interactive)
+  (mapcar #'connect-to-erc erc/servers))
+
+(defun filter-server-buffers ()
+  (delq nil (mapcar (lambda (x)
+                      (and (erc-server-buffer-p x) x))
+                    (buffer-list))))
+
+(defun erc/disconnect ()
+  "Disconnect from all IRC servers."
+  (interactive)
+  (dolist (buffer (filter-server-buffers))
+    (with-message (format "Killing server buffer: %s" (buffer-name buffer))
+      (with-current-buffer buffer
+        (erc-quit-server acdw-erc/bye-message)))))
+
+(provide 'acdw-erc)
+;;; acdw-erc.el ends here

lisp/acdw-modeline.el

@@ -32,7 +32,8 @@
 
 (defun acdw-modeline/erc ()
   "ERC indicator for the modeline."
-  (format-mode-line erc-modified-channels-object))
+  (when (boundp 'erc-modified-channels-object)
+    (format-mode-line erc-modified-channels-object)))
 
 (defun acdw-modeline/god-mode-indicator ()
   (when (bound-and-true-p god-local-mode)