[~bandali/configs] / .emacs.d / init.el

;;; init.el --- bandali's emacs configuration -*- lexical-binding: t -*-

;; Copyright (C) 2018-2022  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
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; GNU Emacs configuration of bandali, free software activist,
;; computing scientist, and GNU maintainer and volunteer.

;; Over the years, I've taken inspiration from configurations of many
;; great people.  Some that I can remember off the top of my head are:
;;
;; - https://github.com/dieggsy/dotfiles
;; - https://github.com/dakra/dmacs
;; - http://pages.sachachua.com/.emacs.d/Sacha.html
;; - https://github.com/dakrone/eos
;; - http://doc.rix.si/cce/cce.html
;; - https://github.com/jwiegley/dot-emacs
;; - https://github.com/wasamasa/dotemacs
;; - https://github.com/hlissner/doom-emacs

;;; 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)

\f
;;; whoami

(setq user-full-name "Amin Bandali"
      user-mail-address "bandali@gnu.org")

\f
;;; Package management

;; variables of interest:
;;   package-archive-priorities
;;   package-load-list
;;   package-pinned-packages

;; (let* ((b (find-file-noselect "refinery-theme.el"))
;;        (d (with-current-buffer b (package-buffer-info))))
;;   (package-generate-description-file d "refinery-theme-pkg.el"))
(run-with-idle-timer 0.01 nil #'require 'package)
(with-eval-after-load 'package
  ;; (setq
  ;;  ;; package-archives
  ;;  ;; `(,@package-archives
  ;;  ;;   ("bndl" . "https://p.bndl.org/elpa/"))
  ;;  package-load-list
  ;;  '(;; GNU ELPA
  ;;    (debbugs "0.29")
  ;;    (delight "1.7")
  ;;    (emms "7.7")
  ;;    (expand-region "0.11.0")
  ;;    (rt-liberation "2.4")
  ;;    (yasnippet "0.14.0")))
(package-initialize))

(setq package-archive-upload-base "/ssh:caffeine:~/www/p/elpa")

\f
;;; Initial setup

;; keep ~/.emacs.d clean
(defvar b/etc-dir
  (expand-file-name
   (convert-standard-filename "etc/") user-emacs-directory)
  "The directory where packages place their configuration files.")
(defvar b/var-dir
  (expand-file-name
   (convert-standard-filename "var/") user-emacs-directory)
  "The directory where packages place their persistent data files.")
(defvar b/lisp-dir
  (expand-file-name
   (convert-standard-filename "lisp/") user-emacs-directory)
  "The directory where packages place their persistent data files.")
(defun b/etc (file)
  "Expand filename FILE relative to `b/etc-dir'."
  (expand-file-name (convert-standard-filename file) b/etc-dir))
(defun b/var (file)
  "Expand filename FILE relative to `b/var-dir'."
  (expand-file-name (convert-standard-filename file) b/var-dir))
(defun b/lisp (file)
  "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)
(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
  ;; (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
;; (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
(run-with-idle-timer 0.5 nil #'require 'server)
(with-eval-after-load 'server
  (declare-function server-edit "server")
  (global-set-key (kbd "C-c F D") #'server-edit)
  (declare-function server-running-p "server")
  (or (server-running-p) (server-mode)))

\f
;;; Defaults

;;;; C-level customizations

(setq
 ;; line-spacing 3
 completion-ignore-case t
 read-buffer-completion-ignore-case t
 enable-recursive-minibuffers t
 resize-mini-windows t
 mode-line-compact t
 ;; mouse-autoselect-window t
 scroll-conservatively 101
 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 =)
 ring-bell-function 'ignore)

(setq-default
 ;; case-sensitive search (and `dabbrev-expand')
 ;; case-fold-search nil
 ;; always use space for indentation
 indent-tabs-mode nil
 tab-width 4)

(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)

;;;; Elisp-level customizations

;; (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))

;; 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)

;; 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-mail-icon '(image :type xpm
                                  :file "gnus/gnus-pointer.xpm"
                                  :ascent center)
   display-time-use-mail-icon t
   zoneinfo-style-world-list
   `(,@zoneinfo-style-world-list
     ("Etc/UTC" "UTC")
     ("Asia/Tehran" "Tehran")
     ("Australia/Melbourne" "Melbourne")))
  (display-time-mode))

(run-with-idle-timer 0.1 nil #'require 'battery)
(with-eval-after-load 'battery
  (setq battery-mode-line-format " %p%% %t")
  (display-battery-mode))

;; (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)
(with-eval-after-load 'windmove
  (setq windmove-wrap-around t)
  (global-set-key (kbd "M-H") #'windmove-left)
  (global-set-key (kbd "M-L") #'windmove-right)
  (global-set-key (kbd "M-K") #'windmove-up)
  (global-set-key (kbd "M-J") #'windmove-down))

(with-eval-after-load 'compile
  ;; don't display *compilation* buffer on success.  based on
  ;; https://stackoverflow.com/a/17788551, with changes to use `cl-letf'
  ;; instead of the now obsolete `flet'.
  (defun b/compilation-finish-function (buffer outstr)
    (unless (string-match "finished" outstr)
      (switch-to-buffer-other-window buffer))
    t)

  (setq compilation-finish-functions #'b/compilation-finish-function)

  (require 'cl-macs)

  (defadvice compilation-start
      (around inhibit-display
              (command &optional mode name-function highlight-regexp))
    (if (not (string-match "^\\(find\\|grep\\)" command))
        (cl-letf (((symbol-function 'display-buffer) #'ignore))
          (save-window-excursion ad-do-it))
      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
(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))

;; 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

(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)

;; 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
   `(,@Info-directory-list
     ,(expand-file-name
       (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 'mode-line nil
                          :background grey
                          :inherit 'fixed-pitch))))

\f
;;; Useful utilities

(defun b/add-elisp-section ()
  (interactive)
  (insert "\n")
  (forward-line -1)
  (insert "\n\f\n;;; "))

(defun b/insert-asterism ()
  "Insert a centred asterism."
  (interactive)
  (let ((asterism "* * *"))
    (insert
     (concat
      "\n"
      (make-string
       (floor (/ (- fill-column (length asterism)) 2))
       ?\s)
      asterism
      "\n"))))

(defun b/start-process (program &rest args)
  "Same as `start-process', but doesn't bother about name and buffer."
  (let ((process-name (concat program "_process"))
        (buffer-name  (generate-new-buffer-name
                       (concat program "_output"))))
    (apply #'start-process
           process-name buffer-name program args)))

(defun b/no-mouse-autoselect-window ()
  "Conveniently disable `focus-follows-mouse'.
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/join-line-top ()
  "Like `join-line', but join next line to the current line."
  (interactive)
  (join-line 1))

(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."
  (interactive "*p")
  (let ((u-r-p (use-region-p))          ; if region is active
        (n1 (or n 1)))
    (save-excursion
      (let ((text
             (if u-r-p
                 (buffer-substring (region-beginning) (region-end))
               (prog1 (thing-at-point 'line)
                 (end-of-line)
                 (if (eobp)
                     (newline)
                   (forward-line 1))))))
        (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."
  (interactive)
  (invert-face 'default)
  (when (display-graphic-p)
    (invert-face 'mode-line)))

\f
;;; 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-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 x") #'execute-extended-command)
(global-set-key (kbd "C-c v") #'b/invert-default-face)

;; evaling and macro-expanding
(global-set-key (kbd "C-c e b") #'eval-buffer)
(global-set-key (kbd "C-c e e") #'eval-last-sexp)
(global-set-key (kbd "C-c e m") #'pp-macroexpand-last-sexp)
(global-set-key (kbd "C-c e r") #'eval-region)

;; emacs things
(global-set-key (kbd "C-c e i") #'emacs-init-time)
(global-set-key (kbd "C-c e u") #'emacs-uptime)
(global-set-key (kbd "C-c e v") #'emacs-version)

;; finding
(global-set-key (kbd "C-c f .") #'find-file)
(global-set-key (kbd "C-c f d") #'find-name-dired)
(global-set-key (kbd "C-c f l") #'find-library)
(global-set-key (kbd "C-c f p") #'find-file-at-point)

;; frames
(global-set-key (kbd "C-c F m") #'make-frame-command)
(global-set-key (kbd "C-c F d") #'delete-frame)

;; 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)
  (global-unset-key (kbd "C-z")))

\f
;;; Essential packages

(add-to-list
 'load-path
 (expand-file-name
  (convert-standard-filename "lisp") user-emacs-directory))

;; (require 'bandali-exwm)

(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
  ;; (add-to-list 'recentf-keep #'file-remote-p)
  (recentf-mode)

  (defun b/recentf-open ()
  "Use `completing-read' to \\[find-file] a recent file."
  (interactive)
  (find-file
   (completing-read "Find recent file: " recentf-list)))
  (global-set-key (kbd "C-c f r") #'b/recentf-open))

;; (fido-mode 1)
;; (defun b/icomplete--fido-mode-setup ()
;;   "Customizations to `fido-mode''s minibuffer."
;;   (when (and icomplete-mode (icomplete-simple-completing-p))
;;     (setq-local
;;      ;; icomplete-compute-delay 0.1
;;      ;; icomplete-hide-common-prefix t
;;      icomplete-separator " · "
;;      completion-styles '(basic substring partial-completion flex))))
;; (add-hook 'minibuffer-setup-hook #'b/icomplete--fido-mode-setup 1)

(require 'bandali-eshell)

(require 'bandali-ibuffer)

(require 'bandali-dired)

(with-eval-after-load 'help
  (temp-buffer-resize-mode)
  (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))

(with-eval-after-load 'tramp
  (setq tramp-auto-save-directory (b/var "tramp/auto-save/")
        tramp-persistency-file-name (b/var "tramp/persistency.el"))
  (add-to-list 'tramp-default-proxies-alist '(nil "\\`root\\'" "/ssh:%h:"))
  (add-to-list 'tramp-default-proxies-alist '("localhost" nil nil))
  (add-to-list 'tramp-default-proxies-alist
               (list (regexp-quote (system-name)) nil nil)))

(with-eval-after-load 'doc-view
  (define-key doc-view-mode-map (kbd "M-RET") #'image-previous-line))

(setq shr-max-width 80)

;; Email (with Gnus, message, and smtpmail)
(require 'bandali-gnus)
(require 'bandali-message)
;; (with-eval-after-load 'smtpmail
;;   (setq smtpmail-queue-mail t
;;          smtpmail-queue-dir (concat b/maildir "queue/")))

;; IRC (with ERC)
(require 'bandali-erc)

;; 'paste' service (aka scp + web server)
(add-to-list 'load-path (b/lisp "scpaste"))
(with-eval-after-load 'scpaste
  (setq scpaste-http-destination "https://p.bndl.org"
        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)

\f
;;; Editing

;; display Lisp objects at point in the echo area
(when (version< "25" emacs-version)
  (with-eval-after-load 'eldoc
    (setq eldoc-minor-mode-string " eldoc")
    (global-eldoc-mode)))

;; highlight matching parens
(require 'paren)
(show-paren-mode)

;; (require '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
  (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)

;; automatically save place in files
(when (version< "25" emacs-version)
  (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
;; (run-with-idle-timer 0.6 nil #'require 'ispell)
;; (with-eval-after-load 'ispell
;;   ;; ’ 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
;;   (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
;;   (defun endless/replace-quote (args)
;;     (if (not (derived-mode-p 'org-mode))
;;         args
;;       (cons (replace-regexp-in-string
;;              "'" "’" (car args))
;;             (cdr args))))
;;   (advice-add #'ispell-parse-output :filter-args
;;               #'endless/replace-quote))

;; abbrev
(setq abbrev-file-name (b/etc "abbrev.el"))
(add-hook 'text-mode-hook #'abbrev-mode)

\f
;;; Programming modes

(with-eval-after-load 'lisp-mode
  (defun indent-spaces-mode ()
    (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
  (setq alloy-basic-offset 2)
  ;; (defun b/alloy-simple-indent (start end)
  ;;   (interactive "r")
  ;;   ;; (if (region-active-p)
  ;;   ;;     (indent-rigidly start end alloy-basic-offset)
  ;;   ;;   (if (bolp)
  ;;   ;;       (indent-rigidly (line-beginning-position)
  ;;   ;;                       (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
;;   (require 'lean-input)
;;   (setq default-input-method "Lean"
;;         lean-input-tweak-all '(lean-input-compose
;;                                (lean-input-prepend "/")
;;                                (lean-input-nonempty))
;;         lean-input-user-translations '(("/" "/")))
;;   (lean-input-setup)
;;   ;; local key bindings
;;   (define-key lean-mode-map (kbd "S-SPC") #'company-complete))

(with-eval-after-load 'sgml-mode
  (setq sgml-basic-offset 0))

(with-eval-after-load 'css-mode
  (setq css-indent-offset 2))

;; auctex
;; (setq font-latex-fontify-sectioning 'color)

(with-eval-after-load 'tex-mode
  (cl-delete-if
   (lambda (p) (string-match "^---?" (car p)))
   tex--prettify-symbols-alist))
(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))

\f
;;; Emacs enhancements & auxiliary packages

(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)
  (define-prefix-command 'b/boxquote-prefix-map)
  (global-set-key (kbd "C-c q") 'b/boxquote-prefix-map)
  (define-key b/boxquote-prefix-map (kbd "b")   #'boxquote-buffer)
  (define-key b/boxquote-prefix-map (kbd "B")   #'boxquote-insert-buffer)
  (define-key b/boxquote-prefix-map (kbd "d")   #'boxquote-defun)
  (define-key b/boxquote-prefix-map (kbd "F")   #'boxquote-insert-file)
  (define-key b/boxquote-prefix-map (kbd "hf")  #'boxquote-describe-function)
  (define-key b/boxquote-prefix-map (kbd "hk")  #'boxquote-describe-key)
  (define-key b/boxquote-prefix-map (kbd "hv")  #'boxquote-describe-variable)
  (define-key b/boxquote-prefix-map (kbd "hw")  #'boxquote-where-is)
  (define-key b/boxquote-prefix-map (kbd "k")   #'boxquote-kill)
  (define-key b/boxquote-prefix-map (kbd "p")   #'boxquote-paragraph)
  (define-key b/boxquote-prefix-map (kbd "q")   #'boxquote-boxquote)
  (define-key b/boxquote-prefix-map (kbd "r")   #'boxquote-region)
  (define-key b/boxquote-prefix-map (kbd "s")   #'boxquote-shell-command)
  (define-key b/boxquote-prefix-map (kbd "t")   #'boxquote-text)
  (define-key b/boxquote-prefix-map (kbd "T")   #'boxquote-title)
  (define-key b/boxquote-prefix-map (kbd "u")   #'boxquote-unbox)
  (define-key b/boxquote-prefix-map (kbd "U")   #'boxquote-unbox-region)
  (define-key b/boxquote-prefix-map (kbd "y")   #'boxquote-yank)
  (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
(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
                (lambda ()
                  (interactive)         
                  (setq debbugs-gnu-current-suppress t)
                  (debbugs-gnu debbugs-gnu-default-severities
                               '("emacs"))))
(global-set-key (kbd "C-c D g")         ; bug-gnuzilla
                (lambda ()
                  (interactive)
                  (setq debbugs-gnu-current-suppress t)
                  (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)

;; pass
;; (global-set-key (kbd "C-c a p") #'pass)
;; (add-hook 'pass-mode-hook #'View-exit)

;; reftex
;; 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."
;;     (let* ((macro (reftex-what-macro 1)))
;;       (save-excursion
;;         (when (and macro (string-match "cite" (car macro)))
;;           (goto-char (cdr macro)))
;;         (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"))

;; po-mode
(require 'bandali-po)

(with-eval-after-load 'emms
  (setq emms-directory (b/var "emms")))

(add-to-list 'load-path (b/lisp "ffs"))
(run-with-idle-timer 0.5 nil #'require 'ffs)
(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)))

\f
;;; Post initialization

(message "Loading %s...done (%.3fs)" user-init-file
         (float-time (time-subtract (current-time)
                                    b/before-user-init-time)))

;;; init.el ends here