emacs/init.el

;;; 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:

;;; Necessary packages

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

(setup-define :leader
  (lambda (key command)
    `(progn
       (autoload #',command (symbol-name setup-name))
       (define-key acdw/leader
         ,(if (stringp key) (kbd key) key)
         #',command)))
  :documentation "Bind KEY to COMMAND in `acdw/leader' (C-z) map."
  :repeatable t)

(setup-define :mode
  (lambda (ext)
    `(add-to-list 'auto-mode-alist '(,ext . setup-mode)))
  :documentation "Add SETUP-MODE to `auto-mode-alist' for EXTENSION."
  :repeatable t)

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


;;; Good defaults

(defmacro setc (&rest args)
  "Customize user options using ARGS like `setq'."
  (declare (debug setq))
  `(setup (:option ,@args)))

(setup emacs
  ;; Me
  (:option user-full-name "Case Duckworth"
           user-mail-address "acdw@acdw.net"
           calendar-location-name "Baton Rouge, LA"
           calendar-latitude 30.4
           calendar-longitude -91.1)
  
  ;; Lines
  (:option fill-column 79
           word-wrap t
           truncate-lines nil)

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

  ;; 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)
  
  (add-hook 'before-save-hook #'whitespace-cleanup)

  ;; Killing and yanking
  (: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)

  ;; Encoding
  (:option local-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
           org-export-coding-system 'utf-8-unix
           org-html-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)
  (set-selection-coding-system 'utf-8-unix)

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

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

  ;; 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)
  (fset 'yes-or-no-p #'y-or-n-p)

  ;; Completion
  (:option completion-ignore-case t
           read-buffer-completion-ignore-case t
           icomplete-delay-completions-threshold 0
           icomplete-max-delay-chars 0
           icomplete-compute-delay 0
           icomplete-show-matches-on-no-input t
           icomplete-with-buffer-completion-tables t
           icomplete-in-buffer t
           completion-styles '(partial-completion substring flex)
           completion-category-defaults nil
           completion-category-overrides
           '((file (styles . (partial-completion)))))

  ;; Etc.
  (:option custom-file (acdw/dir "custom.el")
           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")
           disabled-command-function nil
           load-prefer-newer t
           comp-async-report-warnings-errors nil
           frame-title-format '("%b %+%* GNU Emacs"
                                (:eval (when (frame-parameter
                                              nil 'client)
                                         " Client")))
           tab-bar-show 1
           use-dialog-box nil
           use-file-dialog nil
           echo-keystrokes 0.25
           recenter-positions '(top middle bottom)
           attempt-stack-overflow-recovery nil
           attempt-orderly-shutdown-on-fatal-signal nil
           window-resize-pixelwise t
           find-function-C-source-directory
           (pcase acdw/system
             (:work (expand-file-name (concat "~/src/emacs-"
                                              emacs-version
                                              "/src")))
             (:home (expand-file-name
                     "~/src/pkg/emacs/src/emacs-git/src"))
             (:other nil))
           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)

  (when-unfocused garbage-collect
    (garbage-collect))

  (tooltip-mode -1)
  (winner-mode +1)

  ;; Bindings
  (:global "M-SPC" cycle-spacing
           "M-/" hippie-expand
           "M-=" count-words
           "C-x C-b" ibuffer
           "C-c i" acdw/find-emacs-dotfiles))

;; Regular modes (`text-mode', `prog-mode', etc.)
(defun acdw/setup-regular-modes ()
  (setq-local indicate-empty-lines t
              indicate-buffer-boundaries '((top . right)
                                           (bottom . right))))

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

(setup prog
  (:option smie-indent-basic tab-width)
  
  (hook-defun auto-fill-prog-mode prog-mode-hook
    (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)

  (:hook show-paren-mode
         electric-pair-local-mode
         acdw/setup-regular-modes)

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

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

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

  (auto-save-visited-mode +1)

  (when-unfocused save-some-buffers
    (save-some-buffers t)))

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

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

(setup (:require recentf)
  (:option recentf-save-file (acdw/dir "recentf.el")
           recentf-max-menu-items 100
           recentf-max-saved-items nil
           recentf-auto-cleanup 60
           (append recentf-exclude) (acdw/dir))
  (recentf-mode +1))

(setup (:require savehist)
  (:option (append savehist-additional-variables) 'kill-ring
           (append savehist-additional-variables) 'search-ring
           (append savehist-additional-variables) 'regexp-search-ring
           history-length t
           history-delete-duplicates t
           savehist-autosave-interval 6
           savehist-file (acdw/dir "savehist.el"))
  (savehist-mode +1))

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

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

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

(setup flyspell
  (:option ispell-program-name "hunspell"
           ispell-dictionary "en_US"
           ispell-personal-dictionary "~/.hunspell_personal")
  (:needs ispell-program-name) ; don't proceed if not installed
  
  (ispell-set-spellchecker-params)
  (unless (file-exists-p ispell-personal-dictionary)
    (write-region "" nil ispell-personal-dictionary nil 0))

  (add-hook 'text-mode-hook #'flyspell-mode)
  (add-hook 'prog-mode-hook #'flyspell-prog-mode))

(setup scratch
  (hook-defun immortal-scratch kill-buffer-query-functions
    (if (eq (current-buffer) (get-buffer "*scratch*"))
        (progn (bury-buffer)
               nil)
      t)))


;; Applications

(setup (:straight (org :host nil
                       :repo "https://code.orgmode.org/bzg/org-mode.git"))
  (require 'acdw-org)
  (:option org-directory "~/org"
           org-hide-emphasis-markers t
           org-fontify-whole-heading-line t
           org-fontify-done-headline t
           org-fontify-quote-and-verse-blocks t
           org-src-fontify-natively t
           org-pretty-entities t
           org-tags-column (- 0 fill-column -3)
           org-src-tab-acts-natively t
           org-src-window-setup 'current-window
           org-confirm-babel-evaluate nil
           org-adapt-indentation nil
           org-catch-invisible-edits 'smart
           org-special-ctrl-a/e t
           org-special-ctrl-k t
           org-imenu-depth 3
           org-export-headline-levels 8
           org-export-with-smart-quotes t
           org-export-with-sub-superscripts t)
  (:bind "RET" unpackaged/org-return-dwim)
  (add-hook 'before-save-hook #'acdw/hook--org-mode-fix-blank-lines))

(setup eshell
  (:option eshell-directory-name (acdw/dir "eshell/" t)
           eshell-aliases-file (acdw/dir "eshell/aliases" t))

  (defun eshell-quit-or-delete-char (arg)
    "Delete the character to the right, or quit eshell on an empty line."
    (interactive "p")
    (if (and (eolp) (looking-back eshell-prompt-regexp))
        (eshell-life-is-too-much)
      (delete-forward-char arg)))
  
  (hook-defun eshell-setup 'eshell-mode-hook
    (define-key eshell-mode-map (kbd "C-d")
      #'eshell-quit-or-delete-char)
    (when (fboundp simple-modeline--mode-line)
      (setq mode-line-format '(:eval simple-modeline--mode-line)))))

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

(setup browse-url
  (:option browse-url-browser-function 'eww-browse-url
           browse-url-secondary-browser-function
           (if (executable-find "firefox")
               'browse-url-firefox
             'browse-url-default-browser)
           browse-url-new-window-flag t
           browse-url-firefox-new-window-is-tab t)
  (when (eq acdw/system :work)
    (add-to-list 'exec-path "C:/Program Files/Mozilla Firefox")))

(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))

(setup eww
  (:hook acdw/reading-mode))

(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)
  ;; Make `eww' gemini/gopher aware.  From Emacswiki.
  (advice-add 'eww-browse-url :around
              (defun elpher:eww-browse-url (original url &optional new-window)
                "Handle gemini and gopher links."
                (cond ((string-match-p "\\`\\(gemini\\|gopher\\)://" url)
                       (require 'elpher)
                       (elpher-go url))
                      (t (funcall original url new-window))))))

(setup (:straight (gemini-mode
                   :host nil
                   :repo "https://git.carcosa.net/jmcbray/gemini.el.git"))
  (:mode "\\.\\(gemini\\|gmi\\)\\'"))

(setup dired
  (:option 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)
  (:bind "RET" dired-find-alternate-file)
  (with-eval-after-load 'dired
    
    (setup (:straight dired-subtree)
      (:with-map dired-mode-map
        (:bind "i" dired-subtree-toggle
               "TAB" dired-subtree-cycle)))

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

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

(setup (:straight magit)
  (:leader "g" magit-status)
  (:option magit-display-buffer-function
           (defun magit-display-buffer-same-window (buffer)
             "Display BUFFER in the selected window like God intended."
             (display-buffer buffer '(display-buffer-same-window)))
           magit-popup-display-buffer-action '((display-buffer-same-window))))

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

(when (eq acdw/system :home)
  (setup (:straight pdf-tools)
    (pdf-loader-install)))

(when (eq acdw/system :home)
  (setup (:straight vterm)))


;; Extra packages

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

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

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

(setup (:straight crux)
  (:global "M-o" crux-other-window-or-switch-buffer
           "C-k" crux-kill-and-join-forward
           "C-o" crux-smart-open-line-above
           "C-S-o" crux-smart-open-line
           "C-M-\\" crux-cleanup-buffer-or-region)
  (crux-reopen-as-root-mode +1))

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

(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))

;;; Search & Replace
;;
;; I use `ctrlf' for search (it is more "sane" than `isearch'), but I also like
;;`anzu' for `query-replace' (M-%, etc).  At some point, I want to make them
;;better friends (i.e., allow calling `anzu-isearch-query-replace' from within
;;`ctrlf'), but I have yet to write the necessary functionality.

;; Now that I'm thinking about it, I could /maybe/ switch to `visual-regexp'
;; for `query-replace' functionality, since the number of matches is taken care
;; of in `ctrlf'. ..

(setup (:straight ctrlf)
  (:option ctrlf-default-search-style 'fuzzy-regexp
           ctrlf-alternate-search-style 'literal)
  (ctrlf-mode +1))

(setup (:straight anzu)
  (:option anzu-replace-to-string-separator " → "
           anzu-cons-mode-line-p nil)
  (add-to-list 'mode-line-misc-info '(:eval (anzu--update-mode-line)))
  
  (:global [remap query-replace] anzu-query-replace
           [remap query-replace-regexp] anzu-query-replace-regexp)
  (:with-map isearch-mode-map
    (:bind [remap isearch-query-replace] anzu-isearch-query-replace
           [remap isearch-query-replace-regexp]
           anzu-isearch-query-replace-regexp))
  
  (global-anzu-mode +1))

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

(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 (eq acdw/system :home))
  
  (global-undo-fu-session-mode +1))

(setup (:straight (vertico
                   :host github
                   :repo "minad/vertico"))
  
  (advice-add #'completing-read-multiple :filter-args
              (defun crm-indicator (args)
                (cons (concat "[CRM] " (car args)) (cdr args))))
  
  (vertico-mode +1))

(setup (:straight orderless)
  (:option (prepend completion-styles) 'orderless))

(setup (:straight consult)

  ;; "Sensible" functions
  (defun consult-sensible-grep ()
    "Perform `consult-git-grep' if in a git project, otherwise `consult-ripgrep'
if ripgrep is installed, otherwise `consult-grep'."
    (interactive "P")
    (cond ((= (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 ()
    "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')
   "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))

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

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

(setup (:straight olivetti)
  (:option olivetti-body-width (+ fill-column 4)
           olivetti-minimum-body-width fill-column))

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

(setup (:straight which-key)
  (:option which-key-show-early-on-C-h t
           which-key-idle-delay 10000
           which-key-idle-secondary-delay 0.05)
  (which-key-setup-side-window-bottom)
  (which-key-mode +1))

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

(with-eval-after-load 'flyspell
  (setup (:straight flyspell-correct)
    (define-key flyspell-mode-map (kbd "C-;") #'flyspell-correct-wrapper)))


;;; Programming

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

  ;; Use a dumb formatter on modes that `apheleia' doesn't work for.
  (hook-defun dumb-auto-format before-save-hook
    (unless (and (fboundp 'apheleia--get-formatter-command)
                 (apheleia--get-formatter-command))
      (indent-region (point-min) (point-max)))))

(setup (:straight paren-face)
  (global-paren-face-mode +1))

(setup (:straight paredit)
  (autoload 'enable-paredit-mode "paredit" nil t)

  (:hook-into emacs-lisp-mode
              eval-expression-minibuffer
              ielm-mode
              lisp-mode
              lisp-interaction-mode
              scheme-mode
              slime-repl-mode)

  (defun paredit-disable-electric-pair-local-mode ()
    "Disable `electric-pair-local-mode' when `paredit-mode' is enabled."
    (electric-indent-local-mode (if paredit-mode -1 +1)))

  (defun paredit-properly-bind-backspace ()
    "Properly bind DEL and C-d in `paredit-mode'.

`paredit-mode''s DEL binding is shadowed by that for
`lisp-mode-shared-map', so in this hook I remove the binding I
don't want."
    (define-key lisp-mode-shared-map (kbd "DEL") nil)
    (define-key paredit-mode-map (kbd "DEL") #'paredit-backward-delete)
    (define-key paredit-mode-map (kbd "C-d") #'paredit-forward-delete))
  
  (:hook paredit-disable-electric-pair-local-mode
         paredit-properly-bind-backspace)
  
  (require 'eldoc)
  (eldoc-add-command 'paredit-backward-delete 'paredit-close-round))

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

  (defun acdw/eval-region-or-buffer ()
    (interactive)
    (if (region-active-p)
        (eval-region (region-beginning) (region-end))
      (eval-buffer)))
  
  (:with-map emacs-lisp-mode-map
    (:bind "C-c C-c" 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)))

(setup (:straight geiser))

(when-let (lisp-bin (or (executable-find "clisp")
                        (executable-find "sbcl")))
  (setup (:straight slime)
    (require 'slime-autoloads)
    (:option inferior-lisp-program lisp-bin)

    (when-let ((slime-helper (or (expand-file-name-exists-p
                                  "~/quicklisp/slime-helper.el")
                                 (expand-file-name-exists-p
                                  "~/var/quicklisp/slime-helper.el"))))
      (load slime-helper))))

(when (executable-find "fennel")
  (setup (:straight fennel-mode)
    (autoload 'fennel-repl "fennel-mode" nil t)
    (:mode "\\.fnl\\'")))

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

(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-use-package 'flymake-shellcheck)
    (:hook flymake-mode
           flymake-shellcheck-load)))

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

(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)))

(when (eq acdw/system :home)
  (setup (:straight pkgbuild-mode)))