path: root/emacs

;;; ~/.emacs -*- mode: emacs-lisp; lexical-binding: t; -*-
;; Author Case Duckworth <acdw@acdw.net>
;; Bankruptcy: 12

;;; Initialization -- see also ~/.emacs.d/early-init.el

(setopt custom-file (locate-user-emacs-file "custom.el"))
(load custom-file :no-error)

(defvar user-private-file (locate-user-emacs-file "private.el")
  "Private customizations")
;; make sure it's really private!
(and (= (file-attribute-user-id (file-attributes user-private-file))
        (user-uid))                     ; is it owned by this me?
     (set-file-modes user-private-file #o600))
(load user-private-file :no-error)

(load-theme 'brianna :no-confirm)       ; see ~/.emacs.d/brianna-theme.el
(add-hook 'after-init-hook #'setup-faces)

(define-advice startup-echo-area-message (:override ())
  (if (get-buffer "*Warnings*")
      ";_;"
    "^_^"))

;;; Basic settings

;; Environment
(setenv "PAGER" "cat")                  ; emacs is a pager
(setenv "TERM" "dumb")                  ; no fancy graphics!
(setenv "NO_COLOR" "1")                 ; no color!

;; Startup
(setopt inhibit-startup-screen t)
(setopt initial-buffer-choice #'eshell)
(setopt initial-scratch-message ";; *scratch*")
(setopt initial-major-mode #'emacs-lisp-mode)

;; Dialogs
(setopt use-dialog-box nil)
(setopt use-file-dialog nil)
(setopt read-answer-short t)
(setopt use-short-answers t)
(setopt echo-keystrokes 0.01)

;; Cursor
(blink-cursor-mode -1)

;; Whitespace
(setopt whitespace-style '(face trailing tabs tab-mark))
(setopt whitespace-global-modes '(not rcirc-mode jabber-chat-mode))
(global-whitespace-mode)
(add-hook 'before-save-hook #'delete-trailing-whitespace-except-current-line)
(add-hook 'after-init-hook
          (lambda () (add-hook 'before-save-hook #'indent-buffer+)))
(set-face-attribute 'whitespace-tab nil :background nil :foreground "#888")
(setf (alist-get 'tab-mark whitespace-display-mappings)
      '(9 [?· 9] [?» 9] [?\\ 9]))

;;; UI stuff

(setopt tab-bar-show 1)

;; Fixed-pitch
(package-ensure '(fixed-pitch-mode
                  :url "https://github.com/cstby/fixed-pitch-mode.git"))
(require 'fixed-pitch)
(setopt cursor-type 'bar)
(setopt fixed-pitch-use-extended-default t)
(add-to-list 'fixed-pitch-whitelist-hooks 'vc-dir-mode-hook)
(hide-minor-mode 'buffer-face-mode)
(add-hook 'fixed-pitch-mode-hook #'display-fill-column-indicator-mode)

;;; Completions

(setopt tab-always-indent 'complete)
(setopt completion-styles '(basic partial-completion substring flex))

(setopt completion-ignore-case t)
(setopt read-buffer-completion-ignore-case t)
(setopt read-file-name-completion-ignore-case t)
(setopt completion-flex-nospace t)

(setopt completion-show-help nil)
(setopt completions-detailed t)
(setopt completions-group t)
(setopt completion-auto-help 'visible)
(setopt completion-auto-select 'second-tab)
(setopt completions-header-format nil)
(setopt completions-format 'one-column)
(setopt completions-max-height 10)

(keymap-set minibuffer-local-map "C-p" #'minibuffer-previous-completion)
(keymap-set minibuffer-local-map "C-n" #'minibuffer-next-completion)
(keymap-set minibuffer-local-map "M-DEL" #'minibuffer-delete-directory)

(setopt enable-recursive-minibuffers t)
(setopt minibuffer-default-prompt-format " [%s]")
(minibuffer-depth-indicate-mode)
(minibuffer-electric-default-mode)

(setopt file-name-shadow-properties '(invisible t intangible t))
(file-name-shadow-mode)

(setopt history-length t)
(setopt history-delete-duplicates t)
(setopt savehist-save-minibuffer-history t)
(setopt savehist-autosave-interval 5)
(savehist-mode)

(define-minor-mode truncate-lines-local-mode
  "Toggle `truncate-lines' in the current buffer."
  :lighter ""
  (setq-local truncate-lines truncate-lines-local-mode))

(add-hook 'completion-list-mode-hook #'truncate-lines-local-mode)
(add-hook 'minibuffer-setup-hook #'truncate-lines-local-mode)

(package-ensure 'visual-fill-column)
(setopt visual-fill-column-enable-sensible-window-split t)
(add-hook 'visual-line-mode-hook #'visual-fill-column-mode)
(advice-add 'text-scale-adjust :after #'visual-fill-column-adjust)

(package-ensure 'adaptive-wrap)
(add-hook 'visual-fill-column-mode #'adaptive-wrap-prefix-mode)

;; Consult/Marginalia

(package-ensure 'consult)
(require 'consult)
(keymap-global-set "C-x b" #'consult-buffer)
(keymap-global-set "C-x 4 b" #'consult-buffer-other-window)
(keymap-global-set "C-x 5 b" #'consult-buffer-other-frame)
(keymap-global-set "C-x r b" #'consult-bookmark)
(keymap-global-set "M-y" #'consult-yank-pop)
(keymap-global-set "M-g g" #'consult-goto-line)
(keymap-global-set "M-g M-g" #'consult-goto-line)
(keymap-global-set "M-g o" #'consult-outline)
(keymap-global-set "M-g m" #'consult-mark)
(keymap-global-set "M-g i" #'consult-imenu)
(keymap-global-set "M-s d" #'consult-find)
(keymap-global-set "M-s D" #'consult-locate)
(keymap-global-set "M-s l" #'consult-line)
(keymap-global-set "M-s k" #'consult-keep-lines)
(keymap-global-set "M-s u" #'consult-focus-lines)
(keymap-global-set "M-s e" #'consult-isearch-history)
(keymap-set isearch-mode-map "M-e" #'consult-isearch-history)
(keymap-set isearch-mode-map "M-s e" #'consult-isearch-history)
(keymap-set isearch-mode-map "M-s l" #'consult-line)
(setopt xref-show-xrefs-function #'consult-xref)
(setopt xref-show-definitions-function #'xref-show-definitions-completing-read)
(setopt consult-preview-key "M-.")

(package-ensure 'marginalia)
(marginalia-mode)

;;; Frames / Windows

(winner-mode)

;;; Files

(setopt auto-revert-verbose nil)
(setopt global-auto-revert-non-file-buffers t)
(global-auto-revert-mode)

(setopt create-lockfiles nil)
(setopt mode-require-final-newline t)
(setopt view-read-only t)
(setopt save-silently t)
(setopt delete-by-moving-to-trash t)
(setopt auto-save-default nil)
(setopt auto-save-no-message t)
(setopt auto-save-interval 2)
(setopt auto-save-timeout 2)
(setopt auto-save-visited-interval 5)
(setopt remote-file-name-inhibit-auto-save t)
(setopt remote-file-name-inhibit-auto-save-visited t)
(add-to-list 'auto-save-file-name-transforms
             `(".*" ,(locate-user-emacs-file "auto-save/") t))
(auto-save-visited-mode)

(add-function :after after-focus-change-function
              (defun focus-out-save ()
                (save-some-buffers t)))

(setopt backup-by-copying t)
(setopt version-control t)
(setopt kept-new-versions 3)
(setopt kept-old-versions 3)
(setopt delete-old-versions t)
(add-to-list 'backup-directory-alist '("^/dev/shm/" . nil))
(add-to-list 'backup-directory-alist '("^/tmp/" . nil))
(when-let ((xrd (getenv "XDG_RUNTIME_DIR")))
  (add-to-list 'backup-directory-alist (cons xrd nil)))
(add-to-list 'backup-directory-alist
             (cons "." (locate-user-emacs-file "backup/"))
             :append)

(setopt recentf-max-menu-items 100)
(setopt recentf-max-saved-items nil)
(setopt recentf-case-fold-search t)
(with-eval-after-load 'recentf
  (add-to-list 'recentf-exclude "-autoloads.el\\'"))
(add-hook 'buffer-list-update-hook #'recentf-track-opened-file)
(add-hook 'after-save-hook #'recentf-save-list)
(recentf-mode)

(setopt save-place-forget-unreadable-files (eq system-type 'gnu/linux))
(save-place-mode)

(add-hook 'find-file-not-found-functions #'create-missing-directories)

;;; Buffers

;; Unique names
(setopt uniquify-buffer-name-style 'forward)

;; Persistent undo
(package-ensure 'undo-fu-session)
(setopt undo-fu-session-incompatible-files '("/COMMIT_EDITMSG\\'"
                                             "/git-rebase-todo\\'"))
(undo-fu-session-global-mode)

;; Encodings
(set-language-environment "UTF-8")
(setopt buffer-file-coding-system 'utf-8-unix)
(setopt coding-system-for-read 'utf-8-unix)
(setopt coding-system-for-write 'utf-8-unix)
(setopt default-process-coding-system '(utf-8-unix . utf-8-unix))
(setopt locale-coding-system 'utf-8-unix)
(set-charset-priority 'unicode)
(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)
(pcase system-type
  ((or 'ms-dos 'windows-nt)
   (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)))

;;; Search

(setopt isearch-lazy-count t)
(setopt isearch-regexp-lax-whitespace t)
(setopt isearch-wrap-pause 'no)
(setopt search-whitespace-regexp "[     ]+")
(setopt search-ring-max 256)
(setopt regexp-search-ring-max 256)

(define-advice isearch-cancel (:before () add-to-history)
  "Add search string to history when canceling isearch."
  (unless (string-equal "" isearch-string)
    (isearch-update-ring isearch-string isearch-regexp)))

(package-ensure 'isearch-mb)
(with-eval-after-load 'isearch-mb
  (with-eval-after-load 'consult
    (add-to-list 'isearch-mb--with-buffer #'consult-isearch-history)
    (keymap-set isearch-mb-minibuffer-map "M-r" #'consult-isearch-history)
    (add-to-list 'isearch-mb--after-exit #'consult-line)
    (keymap-set isearch-mb-minibuffer-map "M-s l" #'consult-line)))
(isearch-mb-mode)

;; Default to regexen
(setopt search-default-mode t)          ; Isearch
(keymap-global-set "M-%" #'query-replace-regexp)
(keymap-global-set "C-M-%" #'query-replace)

;;; Keybinds

(keymap-global-set "C-x C-k" #'kill-buffer-dwim)
(keymap-global-set "M-o" #'other-window-dwim)
(keymap-global-set "C-x o" #'other-window-dwim)
(keymap-global-set "C-x 0" #'delete-window-dwim)
(keymap-global-set "M-SPC" #'cycle-spacing*)
(keymap-global-set "C-M-\\" #'indent-buffer+)

(keymap-global-set "C-x C-c" #'save-buffers-kill*)
(keymap-global-set "C-x C-b" #'ibuffer)
(keymap-global-set "M-/" #'hippie-expand)
(keymap-global-set "M-u" #'universal-argument)
(keymap-set universal-argument-map "M-u" #'universal-argument-more)
(keymap-global-set "C-c s" #'eshell)

(keymap-global-set "C-c d"
                   (defun insert-current-iso8601 ()
                     (interactive)
                     (insert (format-time-string "%FT%TZ" (current-time) t))))

(keymap-global-set "C-c i"
                   (define-keymap
                     :prefix 'find-init-map
                     "i" (find-user-file init)
                     "e" (find-user-file early-init
                           (locate-user-emacs-file "early-init.el"))
                     "c" (find-user-file custom custom-file)
                     "p" (find-user-file private)
                     "t" (find-user-file brianna
                           (locate-user-emacs-file "brianna-theme.el"))
                     "s" #'scratch-buffer))

(keymap-global-set "C-c t"
                   (define-keymap
                     :prefix 'toggle-map
                     "e" #'toggle-debug-on-error
                     "q" #'toggle-debug-on-quit
                     "c" #'column-number-mode
                     "l" #'line-number-mode
                     "L" #'display-line-numbers-mode
                     "t" #'truncate-lines-local-mode))

;; Un-keybinds
(keymap-global-unset "C-<wheel-down>" t)
(keymap-global-unset "C-<wheel-up>" t)
;; I only ever fat-finger this key and never want to change encoding
(keymap-global-unset "C-\\" t)
(keymap-global-unset "C-z" t)

;; Key settings
(setopt set-mark-command-repeat-pop t)

;;; Text-editing packages

;; Hungry delete
(package-ensure 'hungry-delete)
(setopt hungry-delete-chars-to-skip " \t")
(with-eval-after-load 'hungry-delete
  (add-to-list 'hungry-delete-except-modes 'eshell-mode)
  (add-to-list 'hungry-delete-except-modes 'eww-mode))
(global-hungry-delete-mode)

;;; Writing

(add-hook 'text-mode-hook #'visual-line-mode)

;;; Programming

(add-hook 'prog-mode-hook #'electric-pair-local-mode)
(setopt tab-width 8)
(setopt sh-basic-offset tab-width)
(setopt perl-indent-level tab-width)
(setopt c-basic-offset tab-width)

(defvar space-indent-modes '(emacs-lisp-mode
                             lisp-interaction-mode
                             lisp-mode
                             scheme-mode
                             python-mode
                             haskell-mode
                             text-mode
                             web-mode
                             css-mode)
  "Modes to indent with spaces, not tabs.")

(add-hook 'prog-mode-hook
          (defun indent-tabs-mode-maybe ()
            (setq indent-tabs-mode
                  (if (apply #'derived-mode-p space-indent-modes) nil t))))

;; Elisp
(keymap-set emacs-lisp-mode-map "C-c C-c" #'eval-defun)
(keymap-set emacs-lisp-mode-map "C-c C-b"
            (defun eval-buffer@pulse () (interactive)
                   (eval-buffer)
                   (pulse-momentary-highlight-region (point-min) (point-max))))
(advice-add 'eval-region :after #'pulse@eval)
(add-hook 'emacs-lisp-mode-hook #'elisp-enable-lexical-binding)

;; Makefile
(setopt makefile-backslash-align nil)
(setopt makefile-cleanup-continuations t)

(add-hook 'makefile-mode-hook
          (defun makefile-stop-complaining ()
            (remove-hook 'write-file-functions
                         'makefile-warn-suspicious-lines t)
            (remove-hook 'write-file-functions
                         'makefile-warn-continuations t)))

;; Scheme -- CHICKEN
(setopt scheme-program-name (or (executable-find "csi")))
(add-to-list 'auto-mode-alist '("\\.egg\\'" . scheme-mode))

;; Scheme Indentation
(defun scheme-module-indent (state indent-point normal-indent) 0)
(put 'module 'scheme-indent-function 'scheme-module-indent)
(put 'and-let* 'scheme-indent-function 1)
(put 'parameterize 'scheme-indent-function 1)
(put 'handle-exceptions 'scheme-indent-function 1)
(put 'when 'scheme-indent-function 1)
(put 'unless 'scheme-indent-function 1)
(put 'match 'scheme-indent-function 1)

;; Geiser
(package-ensure 'geiser)
(package-ensure 'geiser-chicken)
(setopt geiser-mode-auto-p nil)
(setopt geiser-repl-history-filename "~/.emacs.d/geiser-history")
(setopt geiser-chicken-init-file "~/.csirc")
(add-hook 'scheme-mode-hook #'geiser-mode)
(add-hook 'geiser-repl-mode-hook #'electric-pair-local-mode)
(advice-add 'geiser-eval-region :after #'pulse@eval)

;; VC
(keymap-global-set "C-x v j"
                   (defun vc-jump ()
                     (interactive)
                     (vc-dir default-directory)))

;;; Compilation

(setopt compilation-always-kill t)
(setopt compilation-ask-about-save nil)

;;; Languages

(package-ensure 'gemtext-mode)

;;; Miscellaneous settings

(add-hook 'after-save-hook #'executable-make-buffer-file-executable-if-script-p)
(add-hook 'prog-mode-hook #'auto-fill-mode)
(add-hook 'prog-mode-hook #'electric-pair-local-mode)
(setopt x-underline-at-descent-line t)
(setopt scroll-conservatively 101)
(setopt display-fill-column-indicator-character ?·)
(setopt disabled-command-function nil)
(setopt electric-pair-skip-whitespace 'chomp)
(setopt fill-column 80)
(setopt finger-X.500-host-regexps '(".*tilde.*"))
(setopt recenter-positions '(top middle bottom))
(setopt eval-expression-print-level nil)
(setopt eval-expression-print-length nil)
(setopt show-paren-delay 0.01)
(setopt show-paren-style 'parenthesis)
(setopt show-paren-when-point-in-periphery t)
(setopt show-paren-when-point-inside-paren t)
(show-paren-mode)
(delete-selection-mode)
(global-so-long-mode)
(global-goto-address-mode)
(context-menu-mode)
(tooltip-mode -1)

(add-hook 'special-mode-hook
          (defun hl-line@special-mode ()
            (unless (derived-mode-p 'help-mode ; add other modes here
                                    'Info-mode
                                    'eww-mode)
              (hl-line-mode))))
(add-hook 'dired-mode-hook #'hl-line-mode)

;;; RCIRC

(setopt rcirc-kill-channel-buffers t)
(setopt rcirc-display-server-buffer nil)

(defun run-rcirc ()
  (interactive)
  (shell-command "chat up")
  (call-interactively #'rcirc))

(add-hook 'rcirc-mode-hook
          (defun @rcirc ()
            (rcirc-track-minor-mode)
            (rcirc-omit-mode)
            (visual-line-mode)
            (setq default-directory (expand-file-name "~"))))

;;; Jabber

(package-ensure 'jabber)
(with-eval-after-load 'jabber
  (require 'jabber-httpupload nil t)
  ;; I wish jabber.el didn't clobber C-x C-j ...
  (keymap-global-set "C-x C-j" #'dired-jump)
  (keymap-global-set "C-c j" jabber-global-keymap)
  (map-keymap (lambda (key cmd)
                (define-key jabber-global-keymap (vector (+ key #x60)) cmd))
              jabber-global-keymap)
  ;; This is just a dang good idea
  (keymap-global-set "C-c C-SPC" #'jabber-activity-switch-to))

(setopt jabber-activity-make-strings #'jabber-activity-make-strings-shorten)
(setopt jabber-activity-query-unread nil)
(setopt jabber-auto-reconnect t)
(setopt jabber-browse-buffer-format "%n<browse>")
(setopt jabber-chat-buffer-format "%n")
(setopt jabber-groupchat-buffer-format "%b")
(setopt jabber-muc-private-buffer-format "%n<%g>")

(add-hook 'jabber-post-connect-hooks #'jabber-enable-carbons)
(add-hook 'jabber-chat-mode-hook #'visual-line-mode)
(remove-hook 'jabber-alert-muc-hooks #'jabber-muc-echo)
(remove-hook 'jabber-alert-presence-hooks #'jabber-presence-echo)

;;; Eshell

(setopt eshell-banner-message
        (format "%s\n\n" (mapconcat #'identity
                                    (process-lines "fortune" "-s")
                                    "\n")))
(setopt eshell-prompt-function
        (defun @eshell-prompt ()
          (let ((rootp (zerop (user-uid))))
            (concat "( "
                    (abbreviate-file-name (eshell/pwd))
                    (if rootp ":root" "")
                    " ) "))))
(setopt eshell-prompt-regexp "^(.*) ")

;;; Browsing

;; Dired (files)
(setopt dired-dwim-target t)
(setopt dired-listing-switches "-AlF")
(setopt dired-ls-F-marks-symlinks t)
(setopt dired-recursive-copies 'always)
(setopt dired-recursive-deletes 'always)
(setopt dired-auto-revert-buffer t)
(setopt dired-hide-details-hide-symlink-targets nil)
(add-hook 'dired-mode-hook #'dired-hide-details-mode)
(add-hook 'dired-mode-hook #'truncate-lines-local-mode)
(with-eval-after-load 'dired
  (require 'dired-x)
  (keymap-set dired-mode-map "C-j" #'dired-up-directory)
  (setopt dired-omit-files (regexp-concat dired-omit-files
                                          "^\\..+$"
                                          ;; CHICKEN ... this may be overkill
                                          "\\.s?o$"
                                          "\\.import\\.scm$"
                                          "\\.\\(build\\|install\\)\\.sh$"
                                          "\\.link$"))
  (add-hook 'dired-mode-hook #'dired-omit-mode)
  (keymap-set dired-mode-map ")" #'dired-omit-mode))

;; Elpher (gemini/gopher)
(package-ensure 'elpher)

;;; HTTP browsing

;; SHR
(setopt shr-max-width (+ fill-column 10))

;; Browse-url
(setopt browse-url-new-window-flag t)
(setopt browse-url-firefox-arguments '("--new-tab"))
(setopt browse-url-firefox-new-window-is-tab t)