X-Git-Url: https://git.shemshak.org/~bandali/configs/blobdiff_plain/22758e8c9214f2086fe0c0a424c993f0a52a5780..HEAD:/.emacs.d/init.el

diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 11e4fb2..f4d7259 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -1,6 +1,6 @@
 ;;; init.el --- bandali's emacs configuration -*- lexical-binding: t -*-
 
-;; Copyright (C) 2018-2022  Amin Bandali <bandali@gnu.org>
+;; Copyright (c) 2018-2023 Amin Bandali <bandali@gnu.org>
 
 ;; This program is free software: you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
@@ -34,71 +34,7 @@
 
 ;;; Code:
 
-;;; Emacs initialization
-
-(defvar b/before-user-init-time (current-time)
-  "Value of `current-time' when Emacs begins loading `user-init-file'.")
-(defvar b/emacs-initialized nil
-  "Whether Emacs has been initialized.")
-
-(when (not (bound-and-true-p b/emacs-initialized))
-  (message "Loading Emacs...done (%.3fs)"
-           (float-time (time-subtract b/before-user-init-time
-                                      before-init-time))))
-
-;; temporarily increase `gc-cons-threshhold' and `gc-cons-percentage'
-;; during startup to reduce garbage collection frequency.  clearing
-;; `file-name-handler-alist' seems to help reduce startup time too.
-(defvar b/gc-cons-threshold gc-cons-threshold)
-(defvar b/gc-cons-percentage gc-cons-percentage)
-(defvar b/file-name-handler-alist file-name-handler-alist)
-(setq gc-cons-threshold (* 30 1024 1024)  ; 30 MiB
-      gc-cons-percentage 0.6
-      file-name-handler-alist nil
-      ;; sidesteps a bug when profiling with esup
-      esup-child-profile-require-level 0)
-
-;; set them back to their defaults once we're done initializing
-(defun b/post-init ()
-  "My post-initialize function, run after loading `user-init-file'."
-  (setq b/emacs-initialized     t
-        gc-cons-threshold       b/gc-cons-threshold
-        gc-cons-percentage      b/gc-cons-percentage
-        file-name-handler-alist b/file-name-handler-alist)
-  (when (featurep 'exwm-workspace)
-    (with-eval-after-load 'exwm-workspace
-      (setq-default
-       mode-line-format
-       (append
-        mode-line-format
-        '((:eval
-           (format
-            "[%s]" (number-to-string
-                    exwm-workspace-current-index))))))))
-  (when (version< emacs-version "28")
-    ;; manually make some mode-line spaces smaller
-    ;; (version<= "28" emacs-version) can do an awesome job at this
-    ;; out of the box if `mode-line-compact' is set to t (see below)
-    (setq-default
-     mode-line-format
-     (mapcar
-      (lambda (x)
-        (if (and (stringp x)
-                 (or (string= x "   ")
-                     (string= x "  ")))
-            " "
-          x))
-      mode-line-format)
-     mode-line-buffer-identification
-     (propertized-buffer-identification "%10b"))))
-(add-hook 'after-init-hook #'b/post-init)
-
-;; increase number of lines kept in *Messages* log
-(setq message-log-max 20000)
-
-
-;;; whoami
-
+;; whoami
 (setq user-full-name "Amin Bandali"
       user-mail-address "bandali@gnu.org")
 
@@ -124,17 +60,15 @@
   ;;    (debbugs "0.29")
   ;;    (delight "1.7")
   ;;    (emms "7.7")
-  ;;    (expand-region "0.11.0")
-  ;;    (rt-liberation "2.4")
-  ;;    (yasnippet "0.14.0")))
-(package-initialize))
+  ;;    (rt-liberation "2.4")))
+  (package-initialize))
 
 (setq package-archive-upload-base "/ssh:caffeine:~/www/p/elpa")
 
 
 ;;; Initial setup
 
-;; keep ~/.emacs.d clean
+;; Keep ~/.emacs.d clean.
 (defvar b/etc-dir
   (expand-file-name
    (convert-standard-filename "etc/") user-emacs-directory)
@@ -157,29 +91,23 @@
   "Expand filename FILE relative to `b/lisp-dir'."
   (expand-file-name (convert-standard-filename file) b/lisp-dir))
 
-(setq
- auto-save-list-file-prefix (b/var "auto-save/sessions/")
- nsm-settings-file (b/var "nsm-settings.el"))
-
-;; separate custom file (don't want it mixing with init.el)
+;; Separate custom file (don't want it mixing with init.el).
 (with-eval-after-load 'custom
   (setq custom-file (b/etc "custom.el"))
   (when (file-exists-p custom-file)
     (load custom-file))
-  ;; while at it, treat themes as safe
-  ;; (setf custom-safe-themes t)
-  ;; only one custom theme at a time
+  ;; Only one custom theme at a time.
   ;; (defadvice load-theme (before clear-previous-themes activate)
   ;;   "Clear existing theme settings instead of layering them"
   ;;   (mapc #'disable-theme custom-enabled-themes))
   )
 
-;; load the secrets file if it exists, otherwise show a warning
+;; Load the secrets file if it exists, otherwise show a warning.
 ;; (with-demoted-errors
 ;;     (load (b/etc "secrets")))
 
-;; start up emacs server.  see
-;; https://www.gnu.org/software/emacs/manual/html_node/emacs/Emacs-Server.html#Emacs-Server
+;; Start up emacs server:
+;; https://www.gnu.org/software/emacs/manual/html_node/emacs/Emacs-Server.html
 (run-with-idle-timer 0.5 nil #'require 'server)
 (with-eval-after-load 'server
   (declare-function server-edit "server")
@@ -198,113 +126,74 @@
  read-buffer-completion-ignore-case t
  enable-recursive-minibuffers t
  resize-mini-windows t
+ message-log-max 20000
  mode-line-compact t
  ;; mouse-autoselect-window t
+ scroll-conservatively 15
  scroll-preserve-screen-position 1
- ;; i don't feel like jumping out of my chair every now and again;
- ;; so...don't *BEEP* at me, emacs =)
+ ;; I don't feel like jumping out of my chair every now and again;
+ ;; so...don't *BEEP* at me, Emacs. =)
  ring-bell-function 'ignore)
 
 (setq-default
- ;; case-sensitive search (and `dabbrev-expand')
+ ;; Case-sensitive search (and `dabbrev-expand').
  ;; case-fold-search nil
- ;; always use space for indentation
- indent-tabs-mode nil
- tab-width 4)
+ indent-tabs-mode nil  ; always use space for indentation
+ tab-width 4
+ indicate-buffer-boundaries 'left)
+
+;; Lazy-person-friendly yes/no prompts.
+(defalias 'yes-or-no-p #'y-or-n-p)
 
 (when (display-graphic-p)
-  (set-fontset-font t 'arabic "Vazir"))
-;; ;; (set-frame-font "Drafting Mono-14:weight=light" nil t)
-;; (set-frame-font "Drafting Mono:pixelsize=16" nil t)
-;; (set-face-attribute 'bold nil :weight 'semi-bold)
+  ;; (set-frame-font "Source Code Pro-10.5:weight=medium" nil t)
+  ;; (set-frame-font "FreeSans" nil t)
+  (set-fontset-font t 'arabic "Sahel WOL"))
 
 ;;;; Elisp-level customizations
 
-;; (define-key minibuffer-local-completion-map
-;;   "\t" #'minibuffer-force-complete)
+(with-eval-after-load 'minibuffer
+  (setq read-file-name-completion-ignore-case t))
 
-;; (with-eval-after-load 'icomplete
-
-;; (setq icomplete-on-del-error-function #'abort-recursive-edit)
+;; `startup'
+(setq auto-save-list-file-prefix (b/var "auto-save/sessions/"))
 
-;; (defun b/icomplete-fido-backward-updir ()
-;;   "Delete char before or go up directory, like `ido-mode'."
-;;   (interactive)
-;;   (if (and (eq (char-before) ?/)
-;;            (eq (icomplete--category) 'file))
-;;       (save-excursion
-;;         (goto-char (1- (point)))
-;;         (when (search-backward "/" (point-min) t)
-;;           (delete-region (1+ (point)) (point-max))))
-;;     (condition-case nil
-;;         (call-interactively #'delete-backward-char)
-;;       (error
-;;        (when icomplete-on-del-error-function
-;;          (funcall icomplete-on-del-error-function))))))
-
-;; (define-key icomplete-fido-mode-map
-;;   (kbd "DEL") #'b/icomplete-fido-backward-updir))
+(with-eval-after-load 'files
+  (setq
+   ;; backups (C-h v make-backup-files RET)
+   backup-by-copying t
+   backup-directory-alist (list (cons "." (b/var "backup/")))
+   version-control t
+   delete-old-versions t
+   ;; auto-save
+   auto-save-file-name-transforms `((".*" ,(b/var "auto-save/") t))
+   ;; insert newline at the end of files
+   ;; require-final-newline t
+   ;; open read-only file buffers in view-mode
+   ;; (enables niceties like `q' for quit)
+   view-read-only t))
+
+;; `novice'
+(setq disabled-command-function nil)
 
-;; subr
+;; `subr'
 ;; (keyboard-translate ?\( ?\[)
 ;; (keyboard-translate ?\) ?\])
 ;; (keyboard-translate ?\[ ?\()
 ;; (keyboard-translate ?\] ?\))
 
-;; minibuffer
-(setq read-file-name-completion-ignore-case t)
-
-;; startup
-;; don't need to see the startup echo area message
-(advice-add #'display-startup-echo-area-message :override #'ignore)
-(setq
- ;; i want *scratch* as my startup buffer
- initial-buffer-choice t
- ;; i don't need the default hint
- initial-scratch-message nil
- ;; use customizable text-mode as major mode for *scratch*
- ;; (initial-major-mode 'text-mode)
- ;; inhibit buffer list when more than 2 files are loaded
- inhibit-startup-buffer-menu t
- ;; don't need to see the startup screen or echo area message
- inhibit-startup-screen t
- inhibit-startup-echo-area-message user-login-name)
-
-;; files
-(setq
- ;; backups (C-h v make-backup-files RET)
- backup-by-copying t
- backup-directory-alist (list (cons "." (b/var "backup/")))
- version-control t
- delete-old-versions t
- ;; auto-save
- auto-save-file-name-transforms `((".*" ,(b/var "auto-save/") t))
- ;; insert newline at the end of files
- ;; require-final-newline t
- ;; open read-only file buffers in view-mode
- ;; (enables niceties like `q' for quit)
- view-read-only t)
-
-;; novice
-;; disable disabled commands
-(setq disabled-command-function nil)
-
-;; lazy-person-friendly yes/no prompts
-(defalias 'yes-or-no-p #'y-or-n-p)
-
-;; autorevert: enable automatic reloading of changed buffers and files
-(setq
- ;; auto-revert-verbose nil
- global-auto-revert-non-file-buffers nil)
-(require 'autorevert)
-(global-auto-revert-mode 1)
+(run-with-idle-timer 0.1 nil #'require 'autorevert)
+(with-eval-after-load 'autorevert
+  (setq
+   ;; auto-revert-verbose nil
+   global-auto-revert-non-file-buffers nil)
+  (global-auto-revert-mode 1))
 
-;; time and battery in mode-line
 (run-with-idle-timer 0.1 nil #'require 'time)
 (with-eval-after-load 'time
   (setq
    display-time-default-load-average nil
-   display-time-format " %a %b %-e %-l:%M%P"
+   display-time-format " %a %Y-%m-%d %-l:%M%P"
    display-time-mail-icon '(image :type xpm
                                   :file "gnus/gnus-pointer.xpm"
                                   :ascent center)
@@ -318,18 +207,91 @@
 
 (run-with-idle-timer 0.1 nil #'require 'battery)
 (with-eval-after-load 'battery
-  (setq battery-mode-line-format " %p%% %t")
+  (setq battery-mode-line-format " [%p%% %t]")
   (display-battery-mode))
 
+(progn ; display system volume in mode-line
+  (defvar b/volume-level 0)
+  (defvar b/volume-mute nil)
+  (defvar b/volume-level-mic 0)
+  (defvar b/volume-mute-mic nil)
+
+  (defun b/volume-get (&optional use-default-source)
+    "Get the default sink volume and mute state.
+If USE-DEFAULT-SOURCE is non-nill, use the default source (e.g. a
+microphone) instead of the default sink."
+    (pcase (split-string   ; expecting: <mute> <volume> (e.g. true 15)
+            (string-trim
+             (shell-command-to-string
+              (mapconcat
+               #'identity
+               `("pamixer"
+                 ,(when use-default-source "--default-source")
+                 "--get-volume"
+                 "--get-mute")
+               " "))))
+      (`(,m ,v)
+       (let ((mute (string= "true" m))
+             (volume (string-to-number v)))
+         `(,mute ,volume)))))
+
+  (defun b/volume-update ()
+    "Update system sound volume as displayed in mode-line."
+    (let ((changed))
+      (pcase (b/volume-get)
+        (`(,mute ,volume)
+         (unless (eq mute b/volume-mute)
+           (setq b/volume-mute mute
+                 changed t))
+         (unless (= volume b/volume-level)
+           (setq b/volume-level volume
+                 changed t))))
+      (pcase (b/volume-get 'mic)
+        (`(,mute ,volume)
+         (unless (eq mute b/volume-mute-mic)
+           (setq b/volume-mute-mic mute
+                 changed t))
+         (unless (= volume b/volume-level-mic)
+           (setq b/volume-level-mic volume
+                 changed t))))
+      (when changed
+        (force-mode-line-update))))
+
+  (defvar b/volume-timer (run-at-time nil 5 #'b/volume-update))
+
+  (setq-default
+   mode-line-format
+   (append
+    mode-line-format
+    '((:eval
+       (format
+        " [%s%%%%%s %s%%%%%s]"
+        (number-to-string b/volume-level)
+        (if b/volume-mute "-" "+")
+        (number-to-string b/volume-level-mic)
+        (if b/volume-mute-mic "-" "+")))))))
+
 ;; (with-eval-after-load 'fringe
 ;;   ;; smaller fringe
 ;;   (fringe-mode '(3 . 1)))
 
-;; enable winner-mode (C-h f winner-mode RET)
-(require 'winner)
-(winner-mode 1)
-
-(run-with-idle-timer 0.1 nil #'require 'windmove)
+(run-with-idle-timer 0.5 nil #'require 'winner)
+(with-eval-after-load 'winner
+  (winner-mode 1)
+  (when (featurep 'exwm)
+    ;; prevent a bad interaction between EXWM and winner-mode, where
+    ;; sometimes closing a window (like closing a terminal after
+    ;; entering a GPG password via pinentry-gnome3's floating window)
+    ;; results in a dead frame somewhere and effectively freezes EXWM.
+    (advice-add
+     'winner-insert-if-new
+     :around
+     (lambda (orig-fun &rest args)
+       ;; only add the frame if it's live
+       (when (frame-live-p (car args))
+         (apply orig-fun args))))))
+
+(run-with-idle-timer 0.5 nil #'require 'windmove)
 (with-eval-after-load 'windmove
   (setq windmove-wrap-around t)
   (global-set-key (kbd "M-H") #'windmove-left)
@@ -359,60 +321,61 @@
       ad-do-it))
   (ad-activate 'compilation-start))
 
-;; isearch
-(setq
- ;; allow scrolling in Isearch
- isearch-allow-scroll t
- isearch-lazy-count t
- ;; search for non-ASCII characters: i’d like non-ASCII characters such
- ;; as ‘’“”«»‹›áⓐ𝒶 to be selected when i search for their ASCII
- ;; counterpart.  shoutout to
- ;; http://endlessparentheses.com/new-in-emacs-25-1-easily-search-non-ascii-characters.html
- search-default-mode #'char-fold-to-regexp)
-
-;; replace
-;; uncomment to extend the above behaviour to query-replace
-;; (setq replace-char-fold t)
-
-;; vc
+(with-eval-after-load 'isearch
+  (setq
+   ;; Allow scrolling in Isearch.
+   isearch-allow-scroll t
+   isearch-lazy-count t
+   ;; Search for non-ASCII characters: i’d like non-ASCII characters
+   ;; such as ‘’“”«»‹›áⓐ𝒶 to be selected when I search for their ASCII
+   ;; counterpart.  Shoutout to
+   ;; http://endlessparentheses.com/new-in-emacs-25-1-easily-search-non-ascii-characters.html
+   search-default-mode #'char-fold-to-regexp))
+
+;; (with-eval-after-load 'replace
+;;   ;; Uncomment to extend the above behaviour to query-replace.
+;;   (setq replace-char-fold t))
+
+;; `vc'
 (global-set-key (kbd "C-x v C-=") #'vc-ediff)
 
 (with-eval-after-load 'vc-git
   (setq vc-git-print-log-follow t
         vc-git-show-stash 0))
 
-(setq ediff-window-setup-function 'ediff-setup-windows-plain
-      ediff-split-window-function 'split-window-horizontally)
 (with-eval-after-load 'ediff
-  (add-hook 'ediff-after-quit-hook-internal #'winner-undo))
+  (setq ediff-window-setup-function 'ediff-setup-windows-plain
+        ediff-split-window-function 'split-window-horizontally))
 
-;; face-remap
-(setq
- ;; gentler font resizing
- text-scale-mode-step 1.05)
+(with-eval-after-load 'face-remap
+  (setq
+   ;; Gentler font resizing.
+   text-scale-mode-step 1.05))
 
 (run-with-idle-timer 0.4 nil #'require 'mwheel)
-(setq mouse-wheel-scroll-amount '(1 ((shift) . 1)) ; one line at a time
-      mouse-wheel-progressive-speed nil ; don't accelerate scrolling
-      mouse-wheel-follow-mouse t)       ; scroll window under mouse
+(with-eval-after-load 'mwheel
+  (setq
+   mouse-wheel-scroll-amount '(1 ((shift) . 1)) ; one line at a time
+   mouse-wheel-progressive-speed nil    ; don't accelerate scrolling
+   mouse-wheel-follow-mouse t))         ; scroll window under mouse
 
 (run-with-idle-timer 0.4 nil #'require 'pixel-scroll)
 (with-eval-after-load 'pixel-scroll
   (pixel-scroll-mode 1))
 
-;; epg-config
-(setq
- epg-gpg-program (executable-find "gpg")
- ;; ask for GPG passphrase in minibuffer
- ;; this will fail if gpg>=2.1 is not available
- epg-pinentry-mode 'loopback)
+(with-eval-after-load 'epg-config
+  (setq
+   epg-gpg-program (executable-find "gpg")
+   ;; Ask for GPG passphrase in minibuffer.
+   ;; Will fail if gpg >= 2.1 is not available.
+   epg-pinentry-mode 'loopback))
 
-;; auth-source
-(setq
- auth-sources '("~/.authinfo.gpg")
- authinfo-hidden (regexp-opt '("password" "client-secret" "token")))
+(with-eval-after-load 'auth-source
+  (setq
+   auth-sources '("~/.authinfo.gpg")
+   authinfo-hidden
+   (regexp-opt '("password" "client-secret" "token"))))
 
-;; info
 (with-eval-after-load 'info
   (setq
    Info-directory-list
@@ -421,15 +384,33 @@
        (convert-standard-filename "info/") source-directory)
      "/usr/share/info/")))
 
-;; faces
 (when (display-graphic-p)
   (with-eval-after-load 'faces
     (let ((grey "#e7e7e7"))
-      (set-face-attribute 'fixed-pitch nil :family "Source Code Pro")
+      (set-face-attribute 'fixed-pitch nil
+                          :font "Source Code Pro"
+                          :weight 'medium)
       (set-face-attribute 'mode-line nil
                           :background grey
                           :inherit 'fixed-pitch))))
 
+(when (version< emacs-version "28")
+  ;; Manually make some `mode-line' spaces smaller.  Emacs 28 (and
+  ;; above) does a terrific job at this out of the box when
+  ;; `mode-line-compact' is set to t (see above)."
+  (setq-default
+   mode-line-format
+   (mapcar
+    (lambda (x)
+      (if (and (stringp x)
+               (or (string= x "   ")
+                   (string= x "  ")))
+          " "
+        x))
+    mode-line-format)
+   mode-line-buffer-identification
+   (propertized-buffer-identification "%10b")))
+
 
 ;;; Useful utilities
 
@@ -466,28 +447,31 @@ For disabling the behaviour for certain buffers and/or modes."
   (make-local-variable 'mouse-autoselect-window)
   (setq mouse-autoselect-window nil))
 
-(defun b/kill-current-buffer ()
-  "Kill the current buffer."
-  ;; also see https://redd.it/64xb3q
-  (interactive)
-  (kill-buffer (current-buffer)))
-
-(defun b/move-indentation-or-beginning-of-line (arg)
-  "Move to the indentation or to the beginning of line."
-  (interactive "^p")
-  ;; (if (bolp)
-  ;;     (back-to-indentation)
-  ;;   (move-beginning-of-line arg))
-  (if (= (point)
-         (progn (back-to-indentation)
-                (point)))
-      (move-beginning-of-line arg)))
+;; (defun b/move-indentation-or-beginning-of-line (arg)
+;;   "Move to the indentation or to the beginning of line."
+;;   (interactive "^p")
+;;   ;; (if (bolp)
+;;   ;;     (back-to-indentation)
+;;   ;;   (move-beginning-of-line arg))
+;;   (if (= (point)
+;;          (progn (back-to-indentation)
+;;                 (point)))
+;;       (move-beginning-of-line arg)))
 
 (defun b/join-line-top ()
   "Like `join-line', but join next line to the current line."
   (interactive)
   (join-line 1))
 
+(defun b/*scratch* ()
+  "Switch to `*scratch*' buffer, creating it if it does not
+ exist."
+  (interactive)
+  (let ((fun (if (functionp #'get-scratch-buffer-create)
+                 #'get-scratch-buffer-create ; (version<= "29" emacs-version)
+               #'startup--get-buffer-create-scratch))) ; (version< emacs-version "29")
+    (switch-to-buffer (funcall fun))))
+
 (defun b/duplicate-line-or-region (&optional n)
   "Duplicate the current line, or region (if active).
 Make N (default: 1) copies of the current line or region."
@@ -506,20 +490,39 @@ Make N (default: 1) copies of the current line or region."
         (dotimes (_ (abs n1))
           (insert text))))))
 
-(defun b/invert-default-face ()
-  "Invert the `default' face (swap its background and foreground).
-Effectively a very simple light/dark theme toggle switch."
+(defun b/invert-default-face (arg)
+  "Invert the `default' and `mode-line' faces for the current frame.
+Swap the background and foreground for the two `default' and
+`mode-line' faces, effectively acting like a simple light/dark
+theme toggle.  If prefix argument ARG is given, invert the faces
+for all frames."
+  (interactive "P")
+  (let ((frame (unless arg
+                 (selected-frame))))
+    (invert-face 'default frame)
+    (invert-face 'mode-line frame))
+  (when (fboundp #'exwm-systemtray--refresh-background-color)
+    (exwm-systemtray--refresh-background-color 'remap)))
+
+(defun b/export-frame ()
   (interactive)
-  (invert-face 'default))
+  ;; TODO: ask for fn and/or take as arg
+  (let* ((fn (make-temp-file "emacs" nil ".pdf"))
+         (data (x-export-frames nil 'pdf)))
+    (with-temp-file fn
+      (insert data))
+    (kill-new fn)
+    (message fn)))
 
 
 ;;; General key bindings
 
-(global-set-key (kbd "C-a") #'b/move-indentation-or-beginning-of-line)
-(global-set-key (kbd "C-c a i") #'ielm)
+;; (global-set-key (kbd "C-a") #'b/move-indentation-or-beginning-of-line)
+(global-set-key (kbd "C-c i") #'ielm)
 (global-set-key (kbd "C-c d") #'b/duplicate-line-or-region)
 (global-set-key (kbd "C-c j") #'b/join-line-top)
 (global-set-key (kbd "C-S-j") #'b/join-line-top)
+(global-set-key (kbd "C-c s c") #'b/*scratch*)
 (global-set-key (kbd "C-c x") #'execute-extended-command)
 (global-set-key (kbd "C-c v") #'b/invert-default-face)
 
@@ -547,9 +550,6 @@ Effectively a very simple light/dark theme toggle switch."
 ;; help/describe
 (global-set-key (kbd "C-S-h F") #'describe-face)
 
-;; (global-set-key (kbd "C-x k") #'b/kill-current-buffer)
-;; (global-set-key (kbd "C-x K") #'kill-buffer)
-
 (define-key emacs-lisp-mode-map (kbd "C-<return>") #'b/add-elisp-section)
 
 (when (display-graphic-p)
@@ -563,17 +563,25 @@ Effectively a very simple light/dark theme toggle switch."
  (expand-file-name
   (convert-standard-filename "lisp") user-emacs-directory))
 
-;; (require 'bandali-exwm)
+(when
+    (and
+     (display-graphic-p)
+     ;; we're not running in another WM/DE
+     (not (getenv "XDG_CURRENT_DESKTOP"))
+     (member (system-name) '("chaman" "langa")))
+  (require 'bandali-exwm)
+  (global-set-key (kbd "C-x b") #'exwm-workspace-switch-to-buffer))
 
 (require 'bandali-org)
 
 ;; (require 'bandali-theme)
 
 ;; recently opened files
-(setq recentf-max-saved-items 2000
-      recentf-save-file (b/var "recentf-save.el"))
 (run-with-idle-timer 0.2 nil #'require 'recentf)
 (with-eval-after-load 'recentf
+  (setq
+   recentf-max-saved-items 2000
+   recentf-save-file (b/var "recentf-save.el"))
   ;; (add-to-list 'recentf-keep #'file-remote-p)
   (recentf-mode)
 
@@ -584,6 +592,31 @@ Effectively a very simple light/dark theme toggle switch."
    (completing-read "Find recent file: " recentf-list)))
   (global-set-key (kbd "C-c f r") #'b/recentf-open))
 
+;; (define-key minibuffer-local-completion-map
+;;   "\t" #'minibuffer-force-complete)
+
+;; (with-eval-after-load 'icomplete
+
+;; (setq icomplete-on-del-error-function #'abort-recursive-edit)
+
+;; (defun b/icomplete-fido-backward-updir ()
+;;   "Delete char before or go up directory, like `ido-mode'."
+;;   (interactive)
+;;   (if (and (eq (char-before) ?/)
+;;            (eq (icomplete--category) 'file))
+;;       (save-excursion
+;;         (goto-char (1- (point)))
+;;         (when (search-backward "/" (point-min) t)
+;;           (delete-region (1+ (point)) (point-max))))
+;;     (condition-case nil
+;;         (call-interactively #'delete-backward-char)
+;;       (error
+;;        (when icomplete-on-del-error-function
+;;          (funcall icomplete-on-del-error-function))))))
+
+;; (define-key icomplete-fido-mode-map
+;;   (kbd "DEL") #'b/icomplete-fido-backward-updir))
+
 ;; (fido-mode 1)
 ;; (defun b/icomplete--fido-mode-setup ()
 ;;   "Customizations to `fido-mode''s minibuffer."
@@ -606,7 +639,6 @@ Effectively a very simple light/dark theme toggle switch."
   (setq help-window-select t))
 
 (with-eval-after-load 'help-mode
-  ;; local key bindings
   (define-key help-mode-map (kbd "p") #'backward-button)
   (define-key help-mode-map (kbd "n") #'forward-button))
 
@@ -640,80 +672,79 @@ Effectively a very simple light/dark theme toggle switch."
         scpaste-scp-destination "p:~"))
 (autoload 'scpaste "scpaste" nil t)
 (autoload 'scpaste-region "scpaste" nil t)
-(global-set-key (kbd "C-c a p p") #'scpaste)
-(global-set-key (kbd "C-c a p r") #'scpaste-region)
+(global-set-key (kbd "C-c p p") #'scpaste)
+(global-set-key (kbd "C-c p r") #'scpaste-region)
 
 
 ;;; Editing
 
-;; display Lisp objects at point in the echo area
-(when (version< "25" emacs-version)
+(when (featurep 'eldoc)
+  ;; Display Lisp objects at point in the echo area.
   (with-eval-after-load 'eldoc
     (setq eldoc-minor-mode-string " eldoc")
     (global-eldoc-mode)))
 
 ;; highlight matching parens
-(require 'paren)
-(show-paren-mode)
+(run-with-idle-timer 0.2 nil #'require 'paren)
+(with-eval-after-load 'paren
+  (show-paren-mode))
 
-;; (require 'elec-pair)
-;; (electric-pair-mode)
+;; (run-with-idle-timer 0.2 nil #'require 'elec-pair)
+;; (with-eval-after-load 'elec-pair
+;;   (electric-pair-mode))
 
-(setq
- ;; Save what I copy into clipboard from other applications into Emacs'
- ;; kill-ring, which would allow me to still be able to easily access
- ;; it in case I kill (cut or copy) something else inside Emacs before
- ;; yanking (pasting) what I'd originally intended to.
- save-interprogram-paste-before-kill t)
 (with-eval-after-load 'simple
+  (setq
+   ;; Save what I copy into clipboard from other applications into Emacs'
+   ;; kill-ring, which would allow me to still be able to easily access
+   ;; it in case I kill (cut or copy) something else inside Emacs before
+   ;; yanking (pasting) what I'd originally intended to.
+   save-interprogram-paste-before-kill t)
   (column-number-mode 1)
   (line-number-mode 1))
 
-;; save minibuffer history
-(require 'savehist)
-(setq savehist-file (b/var "savehist.el"))
-(savehist-mode)
-(add-to-list 'savehist-additional-variables 'kill-ring)
+(run-with-idle-timer 0.2 nil #'require 'savehist)
+(with-eval-after-load 'savehist
+  ;; Save minibuffer history.
+  (setq savehist-file (b/var "savehist.el"))
+  (savehist-mode)
+  (add-to-list 'savehist-additional-variables 'kill-ring))
 
-;; automatically save place in files
-(when (version< "25" emacs-version)
+;; Automatically save place in files.
+(run-with-idle-timer 0.2 nil #'require 'saveplace nil 'noerror)
+(with-eval-after-load 'saveplace
   (setq save-place-file (b/var "save-place.el"))
   (save-place-mode))
 
-(defun indicate-buffer-boundaries-left ()
-  (setq indicate-buffer-boundaries 'left))
 (with-eval-after-load 'prog-mode
   (global-prettify-symbols-mode))
-(add-hook 'prog-mode-hook #'indicate-buffer-boundaries-left)
-
-(define-key text-mode-map (kbd "C-<return>") #'b/insert-asterism)
-(add-hook 'text-mode-hook #'indicate-buffer-boundaries-left)
-(add-hook 'text-mode-hook #'flyspell-mode)
 
 (add-to-list 'auto-mode-alist '("\\.*rc$" . conf-mode))
-
 (add-to-list 'auto-mode-alist '("\\.bashrc$" . sh-mode))
 
 (with-eval-after-load 'flyspell
   (setq flyspell-mode-line-string " fly"))
 
-;; ispell
-;; http://endlessparentheses.com/ispell-and-apostrophes.html
+(with-eval-after-load 'text-mode
+  (add-hook 'text-mode-hook #'flyspell-mode)
+  (define-key text-mode-map (kbd "C-<return>") #'b/insert-asterism))
+
+;; ;; http://endlessparentheses.com/ispell-and-apostrophes.html
 ;; (run-with-idle-timer 0.6 nil #'require 'ispell)
 ;; (with-eval-after-load 'ispell
-;;   ;; ’ can be part of a word
+;;   ;; ’ can be part of a word.
 ;;   (setq ispell-local-dictionary-alist
 ;;         `((nil "[[:alpha:]]" "[^[:alpha:]]"
 ;;                "['\x2019]" nil ("-B") nil utf-8))
 ;;         ispell-program-name (executable-find "hunspell"))
-;;   ;; don't send ’ to the subprocess
+;;   ;; Don't send ’ to the subprocess.
 ;;   (defun endless/replace-apostrophe (args)
 ;;     (cons (replace-regexp-in-string
 ;;            "’" "'" (car args))
 ;;           (cdr args)))
 ;;   (advice-add #'ispell-send-string :filter-args
 ;;               #'endless/replace-apostrophe)
-;;   ;; convert ' back to ’ from the subprocess
+;;   ;; Convert ' back to ’ from the subprocess.
 ;;   (defun endless/replace-quote (args)
 ;;     (if (not (derived-mode-p 'org-mode))
 ;;         args
@@ -723,8 +754,8 @@ Effectively a very simple light/dark theme toggle switch."
 ;;   (advice-add #'ispell-parse-output :filter-args
 ;;               #'endless/replace-quote))
 
-;; abbrev
-(setq abbrev-file-name (b/etc "abbrev.el"))
+(with-eval-after-load 'abbrev
+  (setq abbrev-file-name (b/etc "abbrev.el")))
 (add-hook 'text-mode-hook #'abbrev-mode)
 
 
@@ -735,7 +766,6 @@ Effectively a very simple light/dark theme toggle switch."
     (setq indent-tabs-mode nil))
   (add-hook 'lisp-interaction-mode-hook #'indent-spaces-mode))
 
-;; alloy
 (add-to-list 'load-path (b/lisp "alloy-mode"))
 (autoload 'alloy-mode "alloy-mode" nil t)
 (with-eval-after-load 'alloy-mode
@@ -749,14 +779,12 @@ Effectively a very simple light/dark theme toggle switch."
   ;;   ;;                       (line-end-position)
   ;;   ;;                       alloy-basic-offset)))
   ;;   (indent-to (+ (current-column) alloy-basic-offset)))
-  ;; local key bindings
   (define-key alloy-mode-map (kbd "RET") #'electric-newline-and-maybe-indent)
   ;; (define-key alloy-mode-map (kbd "TAB") #'b/alloy-simple-indent)
   (define-key alloy-mode-map (kbd "TAB") #'indent-for-tab-command))
 (add-to-list 'auto-mode-alist '("\\.\\(als\\|dsh\\)\\'" . alloy-mode))
 (add-hook 'alloy-mode-hook (lambda nil (setq-local indent-tabs-mode nil)))
 
-;; lean
 ;; (eval-when-compile (defvar lean-mode-map))
 ;; (run-with-idle-timer 0.4 nil #'require 'lean-mode)
 ;; (with-eval-after-load 'lean-mode
@@ -776,8 +804,8 @@ Effectively a very simple light/dark theme toggle switch."
 (with-eval-after-load 'css-mode
   (setq css-indent-offset 2))
 
-;; auctex
-;; (setq font-latex-fontify-sectioning 'color)
+;; (with-eval-after-load 'auctex
+;;   (setq font-latex-fontify-sectioning 'color))
 
 (with-eval-after-load 'tex-mode
   (cl-delete-if
@@ -786,25 +814,24 @@ Effectively a very simple light/dark theme toggle switch."
 (add-hook 'tex-mode-hook #'auto-fill-mode)
 (add-hook 'tex-mode-hook #'flyspell-mode)
 
+(run-with-idle-timer 0.5 nil #'require 'cmake-mode)
+(with-eval-after-load 'cmake-mode
+  ;; (setq cmake-tab-width 4)
+  (add-to-list 'load-path (b/lisp "cmake-font-lock"))
+  (run-with-idle-timer 0.5 nil #'require 'cmake-font-lock))
+
 
 ;;; Emacs enhancements & auxiliary packages
 
+(with-eval-after-load 'nsm
+  (setq nsm-settings-file (b/var "nsm-settings.el")))
+
 (with-eval-after-load 'man
   (setq Man-width 80))
 
-(defun b/*scratch* ()
-  "Switch to `*scratch*' buffer, creating it if it does not exist."
-  (interactive)
-  (let ((fun (if (functionp #'get-scratch-buffer-create)
-                 #'get-scratch-buffer-create ; (version<= "29" emacs-version)
-               #'startup--get-buffer-create-scratch))) ; (version< emacs-version "29")
-    (switch-to-buffer (funcall fun))))
-(global-set-key (kbd "C-c s") #'b/*scratch*)
-
 ;; ,----
 ;; | make pretty boxed quotes like this
 ;; `----
-(add-to-list 'load-path (b/lisp "boxquote"))
 (run-with-idle-timer 0.6 nil #'require 'boxquote)
 (with-eval-after-load 'boxquote
   (defvar b/boxquote-prefix-map)
@@ -831,41 +858,7 @@ Effectively a very simple light/dark theme toggle switch."
   (define-key b/boxquote-prefix-map (kbd "M-q") #'boxquote-fill-paragraph)
   (define-key b/boxquote-prefix-map (kbd "M-w") #'boxquote-kill-ring-save))
 
-(add-to-list 'load-path (b/lisp "hl-todo"))
-(run-with-idle-timer 0.5 nil #'require 'hl-todo)
-(with-eval-after-load 'hl-todo
-  ;; highlight TODOs in buffers
-  (global-hl-todo-mode))
-
-;; expand-region
-(global-set-key (kbd "C-=") #'er/expand-region)
-
-(run-with-idle-timer 0.6 nil #'require 'yasnippet)
-(with-eval-after-load 'yasnippet
-  (declare-function yas-reload-all
-                    "yasnippet" (&optional no-jit interactive))
-  (declare-function yas-maybe-expand-abbrev-key-filter
-                    "yasnippet" (cmd))
-
-  (defconst yas-verbosity-cur yas-verbosity)
-  (setq yas-verbosity 2
-        yas-snippet-dirs `(,(b/etc "yasnippet/snippets")))
-  ;; (add-to-list 'yas-snippet-dirs "~/src/git/guix/etc/snippets" t)
-  (yas-reload-all)
-  (setq yas-verbosity yas-verbosity-cur)
-
-  (defun b/yas-maybe-expand-abbrev-key-filter (cmd)
-    (when (and (yas-maybe-expand-abbrev-key-filter cmd)
-               (not (bound-and-true-p git-commit-mode)))
-      cmd))
-  (defconst b/yas-maybe-expand
-    '(menu-item "" yas-expand
-                :filter b/yas-maybe-expand-abbrev-key-filter))
-  (define-key yas-minor-mode-map (kbd "SPC") b/yas-maybe-expand)
-
-  (yas-global-mode))
-
-;; debbugs
+;; `debbugs'
 (global-set-key (kbd "C-c D d") #'debbugs-gnu)
 (global-set-key (kbd "C-c D b") #'debbugs-gnu-bugs)
 (global-set-key (kbd "C-c D e")         ; bug-gnu-emacs
@@ -881,49 +874,50 @@ Effectively a very simple light/dark theme toggle switch."
                   (debbugs-gnu debbugs-gnu-default-severities
                                '("gnuzilla"))))
 
-;; url and url-cache
-(setq
- url-configuration-directory (b/var "url/configuration/")
- url-cache-directory (b/var "url/cache/"))
-
-;; eww
-(setq eww-download-directory (file-name-as-directory
-                              (getenv "XDG_DOWNLOAD_DIR")))
-(global-set-key (kbd "C-c a e w") #'eww)
-
-;; ;; org-ref
-;; (setq
-;;  reftex-default-bibliography '("~/usr/org/references.bib")
-;;  org-ref-default-bibliography '("~/usr/org/references.bib")
-;;  org-ref-bibliography-notes "~/usr/org/notes.org"
-;;  org-ref-pdf-directory "~/usr/org/bibtex-pdfs/")
-
-;; fill-column-indicator ?
-
-;; window
-(setq split-width-threshold 150)
-(global-set-key (kbd "C-c w s l")
-                (lambda ()
-                  (interactive)
-                  (split-window-right)
-                  (other-window 1)))
-(global-set-key (kbd "C-c w s j")
-                (lambda ()
-                  (interactive)
-                  (split-window-below)
-                  (other-window 1)))
-(global-set-key (kbd "C-c w q") #'quit-window)
+(with-eval-after-load 'url
+  (setq url-configuration-directory (b/var "url/configuration/")))
 
-;; pass
-;; (global-set-key (kbd "C-c a p") #'pass)
-;; (add-hook 'pass-mode-hook #'View-exit)
+(with-eval-after-load 'url-cache
+  (setq url-cache-directory (b/var "url/cache/")))
 
-;; reftex
-;; uncomment to disable reftex-cite's default choice of previous word
+(with-eval-after-load 'eww
+  (setq
+   eww-download-directory
+   (file-name-as-directory (getenv "XDG_DOWNLOAD_DIR"))))
+(global-set-key (kbd "C-c e w") #'eww)
+
+;; (with-eval-after-load 'org-ref
+;;   (setq
+;;    reftex-default-bibliography '("~/usr/org/references.bib")
+;;    org-ref-default-bibliography '("~/usr/org/references.bib")
+;;    org-ref-bibliography-notes "~/usr/org/notes.org"
+;;    org-ref-pdf-directory "~/usr/org/bibtex-pdfs/"))
+
+(run-with-idle-timer
+ 0.2 nil #'require 'display-fill-column-indicator nil 'noerror)
+(with-eval-after-load 'display-fill-column-indicator
+  (global-display-fill-column-indicator-mode 1))
+
+(with-eval-after-load 'window
+  (setq split-width-threshold 150)
+  (global-set-key (kbd "C-c w s l")
+                  (lambda ()
+                    (interactive)
+                    (split-window-right)
+                    (other-window 1)))
+  (global-set-key (kbd "C-c w s j")
+                  (lambda ()
+                    (interactive)
+                    (split-window-below)
+                    (other-window 1)))
+  (global-set-key (kbd "C-c w q") #'quit-window))
+
+;; Uncomment to disable reftex-cite's default choice of previous word.
 ;; (with-eval-after-load 'reftex
 ;;   (require 'reftex-cite)
 ;;   (defun reftex-get-bibkey-default ()
-;;     "If the cursor is in a citation macro, return the word before the macro."
+;;     "If the cursor is in a citation macro, return the word before
+;;  the macro."
 ;;     (let* ((macro (reftex-what-macro 1)))
 ;;       (save-excursion
 ;;         (when (and macro (string-match "cite" (car macro)))
@@ -931,24 +925,18 @@ Effectively a very simple light/dark theme toggle switch."
 ;;         (reftex-this-word)))))
 (add-hook 'latex-mode-hook #'reftex-mode)
 
-;; dmenu
 (add-to-list 'load-path (b/lisp "dmenu"))
 (with-eval-after-load 'dmenu
   (setq dmenu-prompt-string "run: "
         dmenu-save-file (b/var "dmenu-items")))
 (autoload 'dmenu "dmenu" nil t)
 
-;; eosd ?
-
-;; delight
 (run-with-idle-timer 0.5 nil #'require 'delight)
 (with-eval-after-load 'delight
   (delight 'auto-fill-function " f" "simple")
   (delight 'abbrev-mode "" "abbrev")
-  (delight 'mml-mode " mml" "mml")
-  (delight 'yas-minor-mode "" "yasnippet"))
+  (delight 'mml-mode " mml" "mml"))
 
-;; po-mode
 (require 'bandali-po)
 
 (with-eval-after-load 'emms
@@ -959,21 +947,24 @@ Effectively a very simple light/dark theme toggle switch."
 (with-eval-after-load 'ffs
   (global-set-key (kbd "C-c f s") #'ffs))
 
-(defun b/export-frame ()
-  (interactive)
-  ;; TODO: ask for fn and/or take as arg
-  (let* ((fn (make-temp-file "emacs" nil ".pdf"))
-         (data (x-export-frames nil 'pdf)))
-    (with-temp-file fn
-      (insert data))
-    (kill-new fn)
-    (message fn)))
-
-
-;;; Post initialization
-
-(message "Loading %s...done (%.3fs)" user-init-file
-         (float-time (time-subtract (current-time)
-                                    b/before-user-init-time)))
+(add-to-list 'load-path (b/lisp "debian-el"))
+(run-with-idle-timer 0.5 nil #'require 'debian-el)
+(with-eval-after-load 'debian-el
+  (require 'apt-sources)
+  (require 'apt-utils)
+  (require 'debian-bug)
+  (require 'deb-view)
+  (require 'gnus-BTS)
+  (require 'preseed))
+
+(add-to-list 'load-path (b/lisp "dpkg-dev-el"))
+(run-with-idle-timer 0.5 nil #'require 'dpkg-dev-el)
+(with-eval-after-load 'dpkg-dev-el
+  (require 'debian-changelog-mode)
+  (require 'debian-bts-control)
+  (require 'debian-changelog-mode)
+  (require 'debian-control-mode)
+  (require 'debian-copyright)
+  (require 'readme-debian))
 
 ;;; init.el ends here