;;; init.el -*- lexical-binding: t; coding: utf-8-unix -*-
;; Author: Case Duckworth <acdw@acdw.net>
;; Created: Sometime during Covid-19, 2020
;; Keywords: configuration
;; URL: https://tildegit.org/acdw/emacs
;; Bankruptcy: 7

;; 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.

;;; Code:

;;; Setup

;;;; `setup'
(straight-use-package '(setup :host nil :repo "https://git.sr.ht/~zge/setup"))
(require 'setup)

(setup setup
  (setup-define :straight
    (lambda (recipe)
      `(straight-use-package ',recipe))
    :documentation "Install RECIPE with `straight-use-package'."
    :repeatable t
    :shorthand (lambda (sexp)
                 (let ((recipe (cadr sexp)))
                   (if (consp recipe)
                       (car recipe)
                     recipe)))))

;;;; `no-littering'
(setup (:straight no-littering)
  (:option no-littering-etc-directory (acdw/dir)
           no-littering-var-directory (acdw/dir))
  (require 'no-littering))

;;;; My packages
(when-let ((default-directory
             (expand-file-name-exists-p "pkg/" user-emacs-directory)))
  (normal-top-level-add-subdirs-to-load-path))

;;;; Private stuff
(acdw/require-private)


;;;; Utility functions and variables
;; see also: `acdw' and friends.  Functions here aren't big enough, or they're
;; too tightly bound to stuff here, to be placed in `acdw'.

(defvar lispy-modes '(emacs-lisp-mode
                      eval-expression-minibuffer
                      ielm-mode
                      lisp-mode
                      lisp-interaction-mode
                      scheme-mode
                      slime-repl-mode
                      sly-mrepl-mode)
  "List of modes that are lisp-like enough to hook packages into.")


;;; Basics
;; NOTE that some of the names in `setup' forms are arbitrary.

(setup acdw
  (:option user-full-name "Case Duckworth"
           user-mail-address "acdw@acdw.net"))

(setup (:require auth-source)
  (:option auth-sources '("~/.authinfo" "~/.authinfo.gpg")))

(setup autorevert
  (global-auto-revert-mode +1))

(setup browse-url
  (setq-default browse-url-secondary-browser-function
                (if (executable-find "firefox") ; prefer Firefox
                    'browse-url-firefox
                  'browse-url-default-browser)
                browse-url-new-window-flag nil ; for eww
                browse-url-firefox-arguments '("--new-tab") ; for firefox
                browse-url-firefox-new-window-is-tab t)

  (defvar browse-url-mpv-arguments nil
    "Arguments to pass to mpv in `browse-url-mpv'.")
  
  (defun browse-url-mpv (url &optional new-window)
    "Play `URL' in mpv."
    (interactive (browse-url-interactive-arg "Video URL: "))
    (ignore new-window) ;; mpv always opens a new window
    (let* ((url (browse-url-encode-url url))
           (process-environment (browse-url-process-environment)))
      (message "Playing %s in mpv..." url)
      (apply #'start-process
             (concat "mpv " url) nil
             "mpv"
             (append
              browse-url-mpv-arguments
              (list url)))))

  (defvar browse-url-feh-arguments '("--auto-zoom"
                                     "--geometry" "800x600")
    "Arguments to pass to feh in `browse-url-feh'.")

  (defun browse-url-feh (url &optional new-window)
    "Open `URL' in feh."
    (interactive (browse-url-interactive-arg "Video URL: "))
    (ignore new-window) ;; mpv always opens a new window
    (let* ((url (browse-url-encode-url url))
           (process-environment (browse-url-process-environment)))
      (message "Opening %s in feh..." url)
      (apply #'start-process
             (concat "feh " url) nil
             "feh"
             (append
              browse-url-feh-arguments
              (list url)))))

  ;; `browse-url-browser-function' as an alist is deprecated in Emacs 28 for
  ;; `browse-url-handlers'.
  (set-default (if (version<= emacs-version "28")
                   'browse-url-browser-function
                 'browse-url-handlers)
               `(("\\.jpe?g\\'" . ,(if (executable-find "feh")
                                       'browse-url-feh
                                     'eww-browse-url))
                 ("youtube\\.com\\|youtu\\.be" . ,(if (executable-find "mpv")
                                                      'browse-url-mpv
                                                    'eww-browse-url))
                 ("google\\.com" . browse-url-default-browser)
                 ("\\(twitter\\.com\\|t\\.co\\)" . acdw/eww-browse-twitter-url)
                 ("." . eww-browse-url)))

  ;; Buttonize gemini:// links.
  (acdw/add-button-url-regexp-protocol "gemini"))

(setup buffers
  (:global "C-x k" acdw/kill-a-buffer))

(setup calendar
  (:option calendar-week-start-day 1 ; Monday
           ))

(setup completion
  (:option completion-ignore-case t
           read-buffer-completion-ignore-case t
           completion-styles '(partial-completion substring flex)
           completion-category-defaults nil
           completion-category-overrides
           '((file (styles . (partial-completion)))))

  (:global "M-/" hippie-expand))

(setup cursor
  (:option cursor-type 'bar
           cursor-in-non-selected-windows 'hollow
           blink-cursor-blinks 1)
  (blink-cursor-mode +1))

(setup cus-edit
  (:option custom-file (acdw/dir "custom.el")
           custom-magic-show nil
           custom-magic-show-button t
           custom-unlispify-tag-names nil
           custom-variable-default-form 'edit))

(setup debugger
  (:hook visual-line-mode)
  (:global  "C-c d" toggle-debug-on-error))

(setup dired
  (setq-default dired-recursive-copies 'always
                dired-recursive-deletes 'always
                delete-by-moving-to-trash t
                dired-listing-switches "-Al"
                ls-lisp-dirs-first t
                dired-ls-F-marks-symlinks t
                dired-no-confirm '(byte-compile
                                   chgrp chmod chown copy
                                   hardlink load move
                                   shell touch symlink)
                dired-dwim-target t)
  
  (:also-load dired-x)
  
  (:hook dired-hide-details-mode
         hl-line-mode)
  
  (:global "C-x C-j" dired-jump)

  (acdw/system
   (:work (:straight w32-browser)
          (autoload 'dired-w32-browser "w32-browser")
          (:bind "RET" dired-w32-browser))
   (:home (:straight dired-open)
          (require 'dired-open)
          (:bind "RET" dired-find-alternate-file)
          (:option (prepend dired-open-functions) #'dired-open-xdg)))
  
  (:when-loaded
   (:straight dired-subtree)
   (:bind "i" dired-subtree-toggle
          "TAB" dired-subtree-cycle)

   (:straight dired-collapse)
   (:hook dired-collapse-mode)

   (:straight dired-git-info)
   (:bind ")" dired-git-info-mode)

   (:straight trashed)
   (:option trashed-action-confirmer #'y-or-n-p)))

(setup ediff
  (:option ediff-window-setup-function 'ediff-setup-windows-plain
           ediff-split-window-function 'split-window-horizontally))

(setup eldoc
  (:option eldoc-idle-delay 0.1
           eldoc-echo-area-use-multiline-p nil))

(setup elisp-mode
  (:option eval-expression-print-length nil
           eval-expression-print-level nil
           lisp-indent-function #'lisp-indent-function)

  (add-hook 'emacs-lisp-mode-hook
            (defun emacs-lisp@enforce-lexical-binding ()
              (setq lexical-binding t)))

  (add-hook 'emacs-lisp-mode-hook
            (defun emacs-lisp@imenu-add-setup ()
              (add-to-list 'imenu-generic-expression
                           '("Setup"
                             "\\(^\\s-*(setup +(?\\)\\(\\_<.+\\_>\\)" 2))))

  (defun acdw/eval-region-or-buffer ()
    (interactive)
    (if (region-active-p)
        (let ((begin (region-beginning))
              (end (region-end)))
          (with-message (format "Evaluating %S -> %S" begin end)
            (eval-region begin end)))
      (with-message "Evaluating buffer"
        (eval-buffer))))

  ;; Emulate slime's eval binds
  (:with-map emacs-lisp-mode-map
    (:bind "C-c C-c" eval-defun
           "C-c C-k" acdw/eval-region-or-buffer
           "C-c C-z" ielm))

  (add-hook 'emacs-lisp-mode-hook 'turn-on-eldoc-mode)
  (add-hook 'ielm-mode-hook 'turn-on-eldoc-mode)

  (setup  (:straight macrostep)
    (define-key emacs-lisp-mode-map (kbd "C-c e") #'macrostep-expand))

  (setup (:straight eros)
    (:hook-into emacs-lisp-mode))

  ;; Add advice to pulse evaluated regions
  (define-advice eval-region (:around (fn start end &rest args) pulse-region)
    (pulse-momentary-highlight-region start end)
    (apply fn start end args)))

(setup encoding
  (:option locale-coding-system 'utf-8-unix
           coding-system-for-read 'utf-8-unix
           coding-system-for-write 'utf-8-unix
           buffer-file-coding-system 'utf-8-unix
           default-process-coding-system '(utf-8-unix . utf-8-unix)
           x-select-request-type '(UTF8_STRING
                                   COMPOUND_TEXT
                                   TEXT
                                   STRING))

  (set-charset-priority 'unicode)
  (set-language-environment "UTF-8")
  (prefer-coding-system 'utf-8-unix)
  (set-default-coding-systems 'utf-8-unix)
  (set-terminal-coding-system 'utf-8-unix)
  (set-keyboard-coding-system 'utf-8-unix)

  (acdw/system
   (:work (set-clipboard-coding-system 'utf-16-le)
          (set-selection-coding-system 'utf-16-le))
   (_ (set-selection-coding-system 'utf-8)
      (set-clipboard-coding-system 'utf-8))))

(setup erc
  (:require acdw-erc)
  (:also-load erc-autoaway
              erc-track
              erc-goodies)
  
  (:option
   erc-auto-discard-away t
   erc-autoaway-idle-seconds 600
   erc-autoaway-message "BRB (autoaway: %i seconds)"
   erc-button-url-regexp browse-url-button-regexp
   erc-common-server-suffixes '(("tilde.chat\\'" . "~")
                                ("libera.chat\\'" . "LC"))
   erc-default-server "irc.tilde.chat"  ; fuck freenode. all my friends hate
                                        ; freenode.
   erc-fill-function #'erc-fill-static
   erc-fill-static-center 14
   erc-format-nick-function #'erc-format-truncate-@nick
   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-controls-p t
   erc-interpret-mirc-color t
   erc-join-buffer 'bury
   erc-kill-buffer-on-part t
   erc-kill-queries-on-quit t
   erc-kill-server-buffer-on-quit t
   erc-nick "acdw"
   erc-nick-truncate (- erc-fill-static-center 1)
   erc-prompt (lambda () (acdw-erc/prompt))
   erc-prompt-for-password nil          ; use ~/.authinfo
   erc/servers
   (when (boundp 'erc-autojoin-channels-alist)
     (mapcar #'car erc-autojoin-channels-alist))
   erc-server-coding-system '(utf-8 . utf-8)
   erc-track-exclude-types (append erc-hide-list
                                   '("AWAY"))
   erc-track-exclude-server-buffer t
   erc-track-position-in-mode-line 'before-modes
   erc-track-visibility nil             ; only the selected frame
   )

  ;; Thanks bpalmer!
  (advice-add 'show-paren-function :around
              (defun show-paren@skip-in-erc (f &rest r)
                "Skip `show-paren-mode' in `erc-mode'."
                (unless (derived-mode-p 'erc-mode)
                  (apply f r))))
  
  (:hook erc-autoaway-mode
	     erc-track-mode
	     erc-truncate-mode)

  (:bind "C-c C-b" acdw-erc/erc-switch-to-buffer)

  (with-eval-after-load 'erc
    (setup (:straight erc-hl-nicks)
      (:option (append erc-modules) 'hl-nicks
               erc-hl-nicks-minimum-contrast-ratio 4.5
               erc-hl-nicks-color-contrast-strategy '(invert contrast))
      (:hook-into erc-mode)
      ;; Refresh nick colors after changing modus theme
      ;; Ideally, there'd be a hook for /any/ time we changed theme... but
      ;; whatever.
      (add-hook 'modus-themes-after-load-theme-hook
                #'erc-hl-nicks-refresh-colors))

    ;; (setup (:straight erc-image)
    ;;   (:option (append erc-modules) 'image
    ;;            erc-image-inline-rescale 300))
    
    (erc-update-modules)))

(setup eshell
  (:also-load acdw-eshell
              em-smart)
  
  (:option eshell-aliases-file (acdw/dir "eshell/aliases" t)
           eshell-directory-name (acdw/dir "eshell/" t)
           eshell-kill-on-exit nil
           eshell-review-quick-commands nil
           eshell-smart-space-goes-to-end t
           eshell-where-to-jump 'begin)

  (:global "C-c s" eshell-pop-or-quit)

  (defun eshell-mode@setup ()
    "Set up `eshell' for use.
Most customizations must go in this function since `eshell' loads
like a dumbass."
    ;; Define keys
    (dolist (spec '(("C-d" . eshell-quit-or-delete-char)))
      (define-key eshell-mode-map (kbd (car spec)) (function (cdr spec))))
    ;; Etc.
    (when (boundp 'simple-modeline--mode-line)
      (setq mode-line-format '(:eval simple-modeline--mode-line))))
  
  (:hook eshell-mode@setup
         eshell-arg-hist-mode))

(setup eww
  (:option eww-search-prefix "https://duckduckgo.com/html?q="
           url-privacy-level '(email agent cookies lastloc))
  (:hook acdw/reading-mode))

(setup files
  (:option
   auto-save-file-name-transforms `((".*" ,(acdw/dir "auto-save/" t) t))
   auto-save-list-file-prefix (acdw/dir "auto-save-list/.saves-" t)
   auto-save-interval 60
   auto-save-timeout 60
   auto-save-visited-interval auto-save-timeout
   backup-by-copying t
   backup-directory-alist `((".*" . ,(acdw/dir "backup/" t)))
   delete-old-versions t
   tramp-backup-directory-alist backup-directory-alist
   vc-make-backup-files t
   version-control t)

  (:global "C-c i" acdw/find-emacs-dotfiles)
  
  (auto-save-visited-mode +1)

  (add-hook 'unfocused-hook
            (defun unfocused@save-buffers ()
              (save-some-buffers t))))

(setup flyspell
  (setq-default ispell-program-name "hunspell"
                ispell-dictionary "en_US"
                ispell-personal-dictionary "~/.hunspell_personal"
                ispell-local-dictionary-alist '(("en_US"
                                                 "[[:alpha:]]" "[^[:alpha:]]"
                                                 "[']" nil
                                                 ("-d" "en_US") nil utf-8)))
  (when (boundp 'ispell-hunspell-dictionary-alist)
    (setq-default
     ispell-hunspell-dictionary-alist ispell-local-dictionary-alist))
  (:needs ispell-program-name) ; don't proceed if not installed
  
  (unless (file-exists-p ispell-personal-dictionary)
    (write-region "" nil ispell-personal-dictionary nil 0))

  (defun flyspell-start ()
    "Start `flyspell-mode' or `flyspell-prog-mode', depending on current mode."
    (interactive)
    (cond ((derived-mode-p 'text-mode)
           (flyspell-mode))
          ((derived-mode-p 'prog-mode)
           (flyspell-prog-mode))
          ((called-interactively-p)
           (message "Non-text or -prog mode.  Run `flyspell-mode'."))))

  (when (acdw/system :home)
    (add-hook 'change-major-mode-hook #'flyspell-start))

  (:when-loaded
   (setup (:straight flyspell-correct)
     (define-key flyspell-mode-map (kbd "C-;") #'flyspell-correct-wrapper))))

(setup frames
  (:option frame-title-format '("%b@"
                                (:eval
                                 (or (file-remote-p default-directory 'host)
                                     system-name))
                                " %+%* GNU Emacs"
                                (:eval (when (frame-parameter nil 'client)
                                         " Client")))
           window-resize-pixelwise t)
  
  (add-hook 'unfocused-hook #'garbage-collect))

(setup gnus
  (:option gnus-home-directory (acdw/dir "gnus" t)
           gnus-directory (acdw/dir "News" t)
           gnus-init-file (expand-file-name "gnus.el" user-emacs-directory))
  (:global "C-c n" gnus))

(setup goto-addr
  (add-hook 'text-mode-hook #'goto-address-mode)
  (add-hook 'prog-mode-hook #'goto-address-prog-mode))

(setup ibuffer
  (:option ibuffer-saved-filter-groups
           '(("default"
              ("dired" (mode . dired-mode))
              ("customize" (mode . Custom-mode))
              ("emacs" (or (name . "^\\*scratch\\*$")
                           (name . "^\\*Messages\\*$")
                           (name . "^\\*Warnings\\*$")
                           (name . "^\\*straight-process\\*$")
                           (name . "^\\*Calendar\\*$")))
              ("git" (or (name . "^\*magit")
                         (name . "^\magit")))
              ("help" (or (mode . help-mode)
                          (mode . Info-mode)
                          (mode . helpful-mode)))
              ("messaging" (or (mode . message-mode)
                               (mode . bbdb-mode)
                               (mode . mail-mode)
                               (mode . gnus-group-mode)
                               (mode . gnus-summary-mode)
                               (mode . gnus-article-mode)
                               (name . "^\\.bbdb$")
                               (name . "^\\.newsrc-dribble")
                               (mode . erc-mode)))
              ("shell" (or (mode . eshell-mode)
                           (mode . shell-mode)
                           (mode . vterm-mode)))
              ("web" (or (mode . elpher-mode)
                         (mode . gemini-mode)
                         (mode . eww-mode))))))
  (:global "C-x C-b" ibuffer)

  (defun ibuffer-filter-to-default ()
    (ibuffer-switch-to-saved-filter-groups "default"))
  (:hook ibuffer-filter-to-default)

  (:also-load ibuf-ext)
  (:option ibuffer-show-empty-filter-groups nil
           ibuffer-expert t))

(setup imenu
  (:option imenu-auto-rescan t))

(setup Info
  (:hook variable-pitch-mode
         acdw/reading-mode))

(setup isearch
  (:option search-default-mode t))

(setup lines
  (:option fill-column 79
           word-wrap t
           truncate-lines nil)

  (global-display-fill-column-indicator-mode +1)
  (global-so-long-mode +1)

  (add-hook 'visual-line-mode-hook
            (defun acdw/disable-fill-column-indicator ()
              (display-fill-column-indicator-mode
               (if visual-line-mode -1 +1))))

  ;; `acdw/kill-line-and-join-advice' cribs from `crux-kill-and-join-forward'.
  ;; I can't simply advise `kill-line' with an override from crux because crux
  ;; itself calls `kill-line', leading to a infinite nesting situation.
  (define-advice kill-line (:around (fn &rest args) join-killed-line)
    (if (and (eolp)
             (not (bolp)))
        (delete-indentation 1)
      (apply fn args))))

(setup minibuffer
  (:option minibuffer-prompt-properties
           '(read-only t cursor-intangible t face minibuffer-prompt)
           enable-recursive-minibuffers t
           file-name-shadow-properties '(invisible t intangible t)
           read-answer-short t)

  (add-hook 'minibuffer-setup-hook #'acdw/gc-disable)
  (add-hook 'minibuffer-exit-hook #'acdw/gc-enable)
  
  (minibuffer-depth-indicate-mode +1)
  (file-name-shadow-mode +1)
  (minibuffer-electric-default-mode +1)
  (fset 'yes-or-no-p #'y-or-n-p))

(setup prog
  (:option smie-indent-basic tab-width)
  
  (add-hook 'prog-mode-hook
            (defun prog-mode@auto-fill ()
              (setq-local comment-auto-fill-only-comments t)
              (turn-on-auto-fill)))

  (:option show-paren-delay 0
           show-paren-style 'mixed
           show-paren-when-point-inside-paren t
           show-paren-when-point-in-periphery t)

  (defun flymake-mode-except ()
    "Turn on flymake mode, except in some modes."
    (let ((no-flymake-modes '(emacs-lisp-mode)))
      (unless (or (member major-mode no-flymake-modes)
                  (apply #'derived-mode-p no-flymake-modes))
        (flymake-mode-on))))
  
  (:hook show-paren-mode
         electric-pair-local-mode
         flymake-mode-except
         acdw/setup-fringes)

  (add-hook 'after-save-hook
            #'executable-make-buffer-file-executable-if-script-p))

(setup re-builder
  (require 'acdw-re)
  (advice-add 're-builder :before #'acdw/re-builder-save-state)

  (add-hook 'reb-mode-hook #'paredit-mode)

  (:global "<f2>" re-builder)

  (dolist (map '(reb-mode-map reb-lisp-mode-map))
    (let ((setup-map map))
      (:bind "RET" reb-replace-regexp
             "M-n" reb-next-match
             "M-p" reb-prev-match
             "C-c C-k" reb-quit))))

(setup (:require recentf)
  (:option recentf-save-file (acdw/dir "recentf.el")
           recentf-max-menu-items 100
           recentf-max-saved-items nil
           recentf-auto-cleanup 'mode
           (append recentf-exclude) (acdw/dir))

  (advice-add 'dired-rename-file :after #'rjs/recentf-rename-notify)
  
  (recentf-mode +1))

(setup repeat
  (:only-if (fboundp #'repeat-mode))
  (repeat-mode +1))

(setup (:require savehist)
  (:option history-length t
           history-delete-duplicates t
           savehist-autosave-interval 60
           savehist-file (acdw/dir "savehist.el"))

  (dolist (var '(extended-command-history
                 global-mark-ring
                 kill-ring
                 regexp-search-ring
                 search-ring
                 mark-ring))
    (:option (append savehist-additional-variables) var))
  
  (savehist-mode +1))

(setup saveplace
  (:option save-place-file (acdw/dir "places.el")
           save-place-forget-unreadable-files (acdw/system :home))
  
  (save-place-mode +1))

(setup scratch
  (:option inhibit-startup-screen t
           initial-buffer-choice t
           initial-scratch-message (concat ";; Howdy, "
                                           (nth 0 (split-string
                                                   user-full-name))
                                           "!  "
                                           "Welcome to GNU Emacs.\n\n")
           initial-major-mode 'emacs-lisp-mode)
  
  (add-hook 'kill-buffer-query-functions
            (defun kill-buffer-query@immortal-scratch ()
              (if (eq (current-buffer) (get-buffer "*scratch*"))
                  (progn (bury-buffer)
                         nil)
                t))))

(setup scrolling
  (:option auto-window-vscroll nil
           fast-but-imprecise-scrolling t
           scroll-margin 0
           scroll-conservatively 101
           scroll-preserve-screen-position 1))

(setup selection
  (:option save-interprogram-paste-before-kill t
           yank-pop-change-selection t
           x-select-enable-clipboard t
           x-select-enable-primary t
           mouse-drag-copy-region t
           kill-do-not-save-duplicates t)

  (delete-selection-mode +1))

(setup (:require server)
  (unless (server-running-p)
    (server-start)))

(setup sh-mode
  (:option sh-basic-offset tab-width
           sh-indent-after-case 0
           sh-indent-for-case-alt '+
           sh-indent-for-case-label 0)
  
  (:local-set indent-tabs-mode t)
  
  (when (executable-find "shfmt")
    (with-eval-after-load 'apheleia
      (:option (append apheleia-formatters) '(shfmt . ("shfmt"))
               (append apheleia-mode-alist) '(sh-mode . shfmt))))

  (when (executable-find "shellcheck")
    (:straight flymake-shellcheck)
    (:hook flymake-mode
           flymake-shellcheck-load)))

(setup shell-command
  (:option shell-command-switch (acdw/system
                                 ;; I should be testing on some variable
                                 (:home "-csi")
                                 (:work "-c"))
           shell-command-prompt-show-cwd t
           shell-command-default-error-buffer "*shell-command-errors*"))

(setup shr
  (:option shr-width fill-column
           shr-max-width fill-column
           shr-max-image-proportion 0.6
           shr-image-animate t
           shr-discard-aria-hidden t
           shr-folding-mode t))

(setup text
  (:hook turn-on-auto-fill
         acdw/setup-fringes))

(setup uniquify
  (:option uniquify-buffer-name-style 'forward
           uniquify-separator path-separator
           uniquify-after-kill-buffer-p t
           uniquify-ignore-buffers-re "^\\*"))

(setup variable-pitch-mode
  (:hook acdw-fonts/adapt-variable-pitch))

(setup view
  (:option view-read-only t)
  
  (defun acdw/read-view-mode ()
    (acdw/reading-mode (if view-mode +1 -1)))
  
  (:hook acdw/read-view-mode))

(setup whitespace
  (:option  whitespace-style
            '(empty indentation space-before-tab space-after-tab)
            indent-tabs-mode nil
            tab-width 4
            backward-delete-char-untabify-method 'hungry)

  (:global "M-SPC" cycle-spacing))

(setup windows
  (require 'acdw-bell)
  (:option use-dialog-box nil
           use-file-dialog nil
           tab-bar-show 1
           visible-bell nil
           ring-bell-function (lambda ()
                                (acdw-bell/flash-mode-line
                                 (acdw/system :home)))
           recenter-positions '(top middle bottom))
  
  (tooltip-mode -1)
  (winner-mode +1))

(setup w32
  (:option w32-allow-system-shell t
           w32-pass-lwindow-to-system nil
           w32-lwindow-modifier 'super
           w32-pass-rwindow-to-system nil
           w32-rwindow-modifier 'super
           w32-pass-apps-to-system nil
           w32-apps-modifier 'hyper))

;;; "Et cetera" settings
;; This should stay as /minimal/ as possible.  Anything that can go somewhere
;; else /should/ go there.
(setup emacs
  (:option disabled-command-function nil
           load-prefer-newer t
           native-comp-async-report-warnings-errors nil
           echo-keystrokes 0.01
           attempt-stack-overflow-recovery nil
           attempt-orderly-shutdown-on-fatal-signal nil
           find-function-C-source-directory (acdw/find-emacs-source))

  (:global "M-=" count-words
           "C-w" kill-region-or-backward-word
           "<help> h" nil ; HELLO takes a long time to load on Windows
           )

  ;; (when (display-graphic-p)
  ;;   (:global "<escape>" keyboard-escape-quit))

  ;; Remap C-h to DEL -- <f1> can be the "help" key
  (define-key key-translation-map [?\C-h] [?\C-?])
  
  (:global "C-c t" acdw/insert-iso-date
           "C-z" nil))


;;; Packages

(setup (:straight (0x0 :host nil
                       :repo "https://git.sr.ht/~zge/nullpointer-emacs"))
  (:option 0x0-default-host 'ttm))

(setup (:straight (apheleia :host github
                            :repo "raxod502/apheleia"))
  
  (apheleia-global-mode +1)

  ;; Use a dumb formatter on modes that `apheleia' doesn't work for.
  (add-hook 'before-save-hook
            (defun before-save@dumb-auto-format ()
              (setq stupid-modes '(makefile-mode
                                   org-mode))    
              ;; If there's no apheleia formatter for the mode, just indent the
              ;; buffer.
              (unless (or (apply #'derived-mode-p stupid-modes)
                          (and (fboundp 'apheleia--get-formatter-command)
                               (apheleia--get-formatter-command)))
                (indent-region (point-min) (point-max))))))

(setup (:straight async)
  (autoload 'dired-async-mode "dired-async.el" nil t)
  (dired-async-mode +1))

(setup (:straight ace-link)
  (ace-link-setup-default))

(setup (:straight avy)
  (:global "C-:" avy-goto-char
           "C-'" avy-goto-char-timer
           "M-g f" avy-goto-line
           "M-g w" avy-goto-word-1
           "C-c C-j" avy-resume)

  (with-eval-after-load "isearch"
    (define-key isearch-mode-map (kbd "C-'") #'avy-isearch)))

(setup (:straight (beginend))
  (beginend-global-mode +1))

(setup (:straight (consult
                   :host github
                   :repo "minad/consult"))

  ;; "Sensible" functions
  (defun consult-sensible-grep (&optional arg)
    "Perform `consult-git-grep' if in a git project, otherwise `consult-ripgrep'
if ripgrep is installed, otherwise `consult-grep'."
    (interactive "P")
    (cond ((string-equal (vc-backend buffer-file-name) "Git")
           (call-interactively #'consult-git-grep))
          ((executable-find "rg")
           (call-interactively #'consult-ripgrep))
          (t (call-interactively #'consult-grep))))
  
  (defun consult-sensible-find (&optional arg)
    "Peform `consult-locate' if locate is installed, otehrwise `consult-find'."
    (interactive "P")
    (cond ((executable-find "locate") (call-interactively #'consult-locate))
          (t (call-interactively #'consult-find))))

  ;; Bindings
  (:global
   ;; C-c bindings (`mode-specific-map')
   ;; I don't use any of these right now.
   ;; "C-c h" consult-history
   ;; "C-c m" consult-mode-command
   ;; "C-c b" consult-bookmark
   ;; "C-c k" consult-kmacro
   ;; C-x bindings (`ctl-x-map')
   "C-x M-:" consult-complex-command
   "C-x b" consult-buffer
   "C-x 4 b" consult-buffer-other-window
   "C-x 5 b" consult-buffer-other-frame
   ;; Custom M-# bindings for fast register access
   "M-#" consult-register-load
   "M-'" consult-register-store
   "C-M-#" consult-register
   ;; M-g bindings (`goto-map')
   "M-g e" consult-compile-error
   "M-g g" consult-goto-line
   "M-g M-g" consult-goto-line
   "M-g o" consult-outline
   "M-g m" consult-mark
   "M-g k" consult-global-mark
   "M-g i" consult-imenu
   "M-g I" consult-project-imenu
   ;; M-s bindings (`search-map')
   "M-s g" consult-sensible-grep
   "M-s f" consult-sensible-find
   "M-s l" consult-line
   "M-s m" consult-multi-occur
   "M-s k" consult-keep-lines
   "M-s u" consult-focus-lines
   ;; Other bindings
   "M-y" consult-yank-pop
   "<help> a" consult-apropos
   ;; Isearch integration
   "M-s e" consult-isearch)
  (:with-map isearch-mode-map
    (:bind "M-e" consult-isearch
           "M-s e" consult-isearch
           "M-s l" consult-line))
  
  ;; Registers
  (autoload 'consult-register-preview "consult")
  (:option register-preview-delay 0
           register-preview-function #'consult-register-format)
  (:advise register-preview :override #'consult-register-window)

  ;; Xref
  (:option xref-show-xrefs-function #'consult-xref
           xref-show-definitions-function #'consult-xref)

  ;; Projects
  (:option consult-project-root-function #'vc-root-dir)

  ;; Competion-at-point (complete-region)
  (:global "M-/" completion-at-point)
  (:option completion-in-region-function #'consult-completion-in-region
           completion-cycle-threshold 3
           tab-always-indent 'complete))

(setup (:straight crux)
  
  (:global "M-`" crux-other-window-or-switch-buffer
           "C-o" crux-smart-open-line
           "M-o" crux-smart-open-line-above
           "C-M-\\" crux-cleanup-buffer-or-region
           "C-x 4 t" crux-transpose-windows))

;; requires extension:
;; https://addons.mozilla.org/en-US/firefox/addon/edit-with-emacs1/
(setup (:straight edit-server)
  (when (and (daemonp)
             (require 'edit-server nil :noerror))
    (edit-server-start)
    (add-hook 'edit-server-done-hook #'unfill-buffer)))

(setup (:straight (electric-cursor
                   :host github
                   :repo "duckwork/electric-cursor"))
  (electric-cursor-mode +1))

(setup (:straight (elpher :host nil
                          :repo "git://thelambdalab.xyz/elpher.git"))
  (:option elpher-ipv4-always t
           elpher-certificate-directory (acdw/dir "elpher/")
           elpher-gemini-max-fill-width fill-column)
  
  (:bind "n" elpher-next-link
         "p" elpher-prev-link
         "o" elpher-follow-current-link
         "G" elpher-go-current)
  
  (:hook acdw/reading-mode)
  
  (autoload 'elpher-bookmarks "elpher" nil t)
  (autoload 'elpher-go "elpher" nil t)
  
  ;; Make `eww' gemini/gopher aware.  From Emacswiki.
  (define-advice eww-browse-url (:around (fn url &rest args) gemini-elpher)
    (cond ((string-match-p "\\`\\(gemini\\|gopher\\)://" url)
           (require 'elpher)
           (elpher-go url))
          (t (apply fn url args))))

  (:when-loaded
   (setup (:straight (gemini-write
                      :host nil
                      :repo "https://alexschroeder.ch/cgit/gemini-write"
                      :branch "main"))
     (require 'gemini-write))))

(setup (:straight epithet)
  (add-hook 'Info-selection-hook #'epithet-rename-buffer)
  (add-hook 'eww-after-render-hook #'epithet-rename-buffer)
  (add-hook 'help-mode-hook #'epithet-rename-buffer)
  (add-hook 'occur-mode-hook #'epithet-rename-buffer))

(setup (:straight eradio)
  (:needs "mpv")
  (:option
   eradio-player '("mpv" "--no-video" "--no-terminal")
   eradio-channels `(("KLSU" .
                      "http://130.39.238.143:8010/stream.mp3")
                     ("Soma FM Synphaera" .
                      "https://somafm.com/synphaera256.pls")
                     ("SomaFM BAGel Radio" .
                      "https://somafm.com/bagel.pls")
                     ("SomaFM Boot Liquor" .
                      "https://somafm.com/bootliquor320.pls")
                     ("SomaFM Deep Space One" .
                      "https://somafm.com/deepspaceone.pls")
                     ("SomaFM Fluid" .
                      "https://somafm.com/fluid.pls")
                     ("SomaFM Underground 80s" .
                      "https://somafm.com/u80s256.pls")
                     ("WBRH: Jazz & More" .
                      "http://wbrh.streamguys1.com/wbrh-mp3")
                     ("KBRH Blues & Rhythm Hits" .
                      "http://wbrh.streamguys1.com/kbrh-mp3")
                     ("WRKF HD-2" .
                      ,(concat "https://playerservices.streamtheworld.com/"
                               "api/livestream-redirect/WRKFHD2.mp3"))
                     ("WRKF: NPR for the Capital Region" .
                      ,(concat "https://playerservices.streamtheworld.com/"
                               "api/livestream-redirect/WRKFFM.mp3"))
                     ("tilderadio" .
                      "https://radio.tildeverse.org/radio/8000/radio.ogg")
                     ("vantaradio" .
                      "https://vantaa.black/radio")))
  (:global "C-c r r" eradio-play        ; mnemonic: radio
           "C-c r s" eradio-stop        ; mnemonic: stop
           "C-c r p" eradio-toggle      ; mnemonic: play/pause
           ))

(setup (:straight expand-region)
  (:global "C-=" er/expand-region))

(setup (:straight fennel-mode)
  (:needs "fennel")
  (autoload 'fennel-repl "fennel-mode" nil t)
  (:file-match "\\.fnl\\'"))

(setup (:straight form-feed)
  (global-form-feed-mode +1))

(setup (:straight geiser))

(setup (:straight (gemini-mode
                   :host nil
                   :repo "https://git.carcosa.net/jmcbray/gemini.el.git"))
  (:file-match "\\.\\(gemini\\|gmi\\)\\'")
  (:hook turn-off-auto-fill))

(setup gforth
  (when (locate-library "gforth")
    (autoload 'forth-mode "gforth")
    (add-to-list 'auto-mode-alist '("\\.fs\\'" . forth-mode))
    (autoload 'forth-block-mode "gforth")
    (add-to-list 'auto-mode-alist '("\\.fb\\'" . forth-block-mode))))

(setup (:straight helpful)
  (:global "<help> f" helpful-callable
           "<help> v" helpful-variable
           "<help> k" helpful-key
           "<help> o" helpful-symbol
           "C-c C-d" helpful-at-point))

(setup (:straight imenu-anywhere)
  (:global "C-." imenu-anywhere))

(setup (:straight iscroll)
  (:hook-into text-mode))

(setup (:straight ledger-mode)
  (:needs "ledger"))

(setup (:straight lua-mode)
  (:file-match "\\.lua\\'"))

(setup (:straight magit)
  (:global "C-c g" magit-status)

  (defun magit-display-buffer-same-window (buffer)
    "Display BUFFER in the selected window like God intended."
    (display-buffer buffer '(display-buffer-same-window)))
  
  (:option magit-display-buffer-function #'magit-display-buffer-same-window
           magit-popup-display-buffer-action '((display-buffer-same-window))
           magit-refresh-status-buffer nil))

(setup (:straight marginalia)
  (:option marginalia-annotators '(marginalia-annotators-heavy
                                   marginalia-annotators-light))
  (marginalia-mode +1))

(setup (:straight (mastodon
                   :host github
                   :repo "mooseyboots/mastodon.el"))
  (:option mastodon-instance-url "https://writing.exchange"
           mastodon-auth-source-file (car auth-sources)
           mastodon-client--token-file (acdw/dir "mastodon.plstore")))

(setup (:straight (modus-themes
                   :host gitlab
                   :repo "protesilaos/modus-themes"))
  (:option modus-themes-slanted-constructs t
           modus-themes-bold-constructs t
           modus-themes-region 'bg-only
           modus-themes-org-blocks 'grayscale
           modus-themes-headings '((1 . section)
                                   (t . no-color))
           modus-themes-mode-line nil)
  
  (acdw/sunrise-sunset #'modus-themes-load-operandi
                       #'modus-themes-load-vivendi))

(setup (:straight mwim)
  (:global "C-a" mwim-beginning
           "C-e" mwim-end))

(setup (:straight nov)
  (:option nov-text-width fill-column)
  (:file-match "\\.epub\\'"))

(setup (:straight package-lint))

(setup (:straight package-lint-flymake))

(setup (:straight olivetti)
  (:option olivetti-body-width (+ fill-column 4)
           olivetti-minimum-body-width fill-column)
  
  (add-hook 'olivetti-mode-hook
            (defun acdw/olivetti-mode-hook ()
              (if olivetti-mode
                  (setq-local indicate-empty-lines nil
                              indicate-buffer-boundaries nil)
                (acdw/setup-fringes)))))

(setup (:straight (orderless
                   :host github
                   :repo "oantolin/orderless"))
  (require 'orderless)
  (:option (prepend completion-styles) 'orderless))

(setup (:straight (org :host nil
                       :repo "https://code.orgmode.org/bzg/org-mode.git"))
  (:straight (org-contrib :host nil
                          :repo "https://git.sr.ht/~bzg/org-contrib"))
  (require 'acdw-org)                   ; so I don't clutter up init.el
  (:option org-adapt-indentation nil
           org-catch-invisible-edits 'smart
           org-clock-clocked-in-display 'mode-line
           org-confirm-babel-evaluate nil
           org-ellipsis " …"
           org-export-coding-system 'utf-8-unix
           org-export-headline-levels 8
           org-export-with-section-numbers nil
           org-export-with-smart-quotes t
           org-export-with-sub-superscripts t
           org-export-with-toc nil
           org-fontify-done-headline t
           org-fontify-quote-and-verse-blocks t
           org-fontify-whole-heading-line t
           org-hide-emphasis-markers t
           org-html-coding-system  'utf-8-unix
           org-imenu-depth 3
           org-pretty-entities t
           org-special-ctrl-a/e t
           org-special-ctrl-k t
           org-src-fontify-natively t
           org-src-tab-acts-natively t
           org-src-window-setup 'current-window
           org-startup-truncated nil
           org-tags-column 0 ; (- 0 fill-column -3)
           org-directory "~/org")

  (:bind "RET" acdw-org/return-dwim
         "<S-return>" acdw-org/org-table-copy-down
         "M-SPC M-SPC" insert-zero-width-space
         "C-c C-l" org-insert-link-dwim
         "M-w" kill-ring-save-unfilled
         "M-=" acdw-org/count-words-stupidly)

  (with-eval-after-load 'org-export
    (add-to-list 'org-export-filter-final-output-functions
                 #'org-export-remove-zero-width-spaces))
  
  (defun acdw/org-fix-lines-before-save ()
    (add-hook 'before-save-hook #'acdw-org/fix-blank-lines-in-buffer 0 :local))

  (:hook variable-pitch-mode
         acdw/org-fix-lines-before-save)
  
  (advice-add 'org-delete-backward-char
              :override #'acdw-org/delete-backward-char))

(setup (:straight paredit)

  ;; I don't use paredit-splice-sexp much, and it stomps on isearch.
  (:unbind "M-s")
  
  (defun setup-paredit-mode ()
    "Correct weirdnesses and set up paredit mode."
    (paredit-mode +1)
    (let ((map lisp-mode-shared-map))
      (define-key map (kbd "DEL") #'paredit-backward-delete)
      (define-key map (kbd "C-M-;") #'comment-or-uncomment-sexp)))
  
  (dolist (mode lispy-modes)
    (add-hook (intern (concat (symbol-name mode) "-hook"))
              #'setup-paredit-mode))
  
  (require 'eldoc)
  (eldoc-add-command 'paredit-backward-delete 'paredit-close-round))

(setup (:straight paren-face)
  (dolist (mode lispy-modes)
    (add-hook (intern (concat (symbol-name mode) "-hook")) #'paren-face-mode)))

(setup (:straight restart-emacs)
  (defun emacs-upgrade (&optional update-packages)
    "Pull config, upgrade packages, restart Emacs."
    (interactive "P")
    (when update-packages
      (straight-pull-all))
    (emacs-git-pull-config)
    (restart-emacs)))

(setup (:straight simple-modeline)
  (setup (:straight minions))
  (require 'acdw-modeline)
  (:option
   simple-modeline-segments '((acdw-modeline/modified
                               acdw-modeline/buffer-name
                               acdw-modeline/vc-branch
                               simple-modeline-segment-position)
                              (simple-modeline-segment-misc-info
                               acdw-modeline/erc
                               acdw-modeline/word-count
                               acdw-modeline/text-scale
                               simple-modeline-segment-process
                               acdw-modeline/god-mode-indicator
                               acdw-modeline/winum
                               acdw-modeline/minions
                               simple-modeline-segment-major-mode)))
  (simple-modeline-mode +1))

(setup (:straight sly)
  (defvar acdw/lisp-bin (or (executable-find "sbcl")
                            (executable-find "clisp")
                            ""))
  (:needs acdw/lisp-bin)
  (:option inferior-lisp-program acdw/lisp-bin
           sly-kill-without-query-p t)
  
  (:also-load sly-autoloads)
  (setup (:straight clhs))

  (:with-feature sly-mrepl
    (dolist (key '("RET" "<return>"))
      (:bind key sly-mrepl-return-at-end))
    (:bind "C-c C-c" sly-mrepl-return))

  (defun sly-mrepl-return-at-end ()
    (interactive)
    (if (<= (point-max) (point))
        (sly-mrepl-return)
      (if (bound-and-true-p paredit-mode)
          (paredit-newline)
        (electric-newline-and-maybe-indent)))))

(setup (:straight ssh-config-mode)
  (dolist (spec '(("/\\.ssh/config\\'" . ssh-config-mode)
                  ("/sshd?_config\\'" . ssh-config-mode)
                  ("/knownhosts\\'" . ssh-known-hosts-mode)
                  ("/authorized_keys2?\\'" . ssh-authorized-keys-mode)))
    (add-to-list 'auto-mode-alist spec))
  (add-hook 'ssh-config-mode-hook #'turn-on-font-lock))

(setup (:straight undo-fu)
  (:global "C-/" undo-fu-only-undo
           "C-?" undo-fu-only-redo))

(setup (:straight undo-fu-session)
  (:option undo-fu-session-incompatible-files '("/COMMIT_EDITMSG\\'"
                                                "/git-rebase-todo\\'")
           undo-fu-session-directory (acdw/dir "undo/" t)
           undo-fu-session-compression (acdw/system :home))
  
  (global-undo-fu-session-mode +1))

(setup (:straight (unfocused
                   :host github
                   :repo "duckwork/unfocused"))
  (unfocused-mode +1))

(setup (:straight (vertico
                   :host github
                   :repo "minad/vertico"))
  (setq resize-mini-windows 'grow-only)
  (if (boundp 'comp-deferred-compilation-deny-list)
      (add-to-list 'comp-deferred-compilation-deny-list "vertico"))
  (vertico-mode +1))

(setup (:straight vuiet)
  (:needs "youtube-dl"
          "mpv")
  
  ;; lastfm.el is required too, and needs some setup:
  ;; https://github.com/mihaiolteanu/lastfm.el
  (setup (:straight lastfm)
    (require 'lastfm)))

(setup (:straight web-mode)
  (:option css-level-offset 2
           js-indent-level 2
           sgml-indent-offset 2)
  (:file-match "\\.\\(p\\|dj\\)?html\\'"
               "\\.html?\\'"
               "\\.\\(tpl\\.\\)?php\\'"
               "\\.[agj]sp\\'"
               "\\.as[cp]x\\'"
               "\\.erb\\'"
               "\\.mustache\\'"))

(setup (:straight which-key)
  (:option which-key-show-early-on-C-h t
           which-key-idle-delay 1
           which-key-idle-secondary-delay 0.5)

  (which-key-setup-side-window-right-bottom)
  (which-key-mode +1))

(setup (:straight whitespace-cleanup-mode)
  (global-whitespace-cleanup-mode +1))

(setup (:straight winum)
  (:option winum-scope 'frame-local
           winum-auto-setup-mode-line nil
           winum-ignored-buffers '(" *which-key*")
           winum-format " %s")

  (when-unfocused winum-map-keys
    (defvar winum--keys-mapped nil
      "Whether `winum' keys have been mapped already.")
    (when (and (not winum--keys-mapped)
               (display-graphic-p))
      (:with-map winum-keymap
        (:bind "M-0" winum-select-window-0-or-10
               "M-1" winum-select-window-1
               "M-2" winum-select-window-2
               "M-3" winum-select-window-3
               "M-4" winum-select-window-4
               "M-5" winum-select-window-5
               "M-6" winum-select-window-6
               "M-7" winum-select-window-7
               "M-8" winum-select-window-8
               "M-9" winum-select-window-9))
      (setq winum--keys-mapped t)))

  (winum-mode +1))

(setup (:straight xr))

(setup (:straight zzz-to-char)
  (defun acdw/zzz-up-to-char (prefix)
    "Call `zzz-up-to-char', unless issued a PREFIX, in which case
call `zzz-to-char'."
    (interactive "P")
    (if prefix
        (call-interactively #'zzz-to-char)
      (call-interactively #'zzz-up-to-char)))
  
  (:global "M-z" acdw/zzz-up-to-char))


;;; System-dependent

;;;; Home
(when (acdw/system :home)

  (setup (:straight pkgbuild-mode))
  
  (setup (:straight (pdf-tools
                     :host github
                     :repo "vedang/pdf-tools"))
    (add-to-list 'auto-mode-alist '("\\.pdf\\'" . pdf-view-mode))
    (pdf-loader-install))

  (setup (:straight vterm)))

;;;; Work
(when (acdw/system :work)
  (setup (:straight ahk-mode)))


;;; init.el ends here