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GNU Emacs Configuration

Overview

Terje’s GNU Emacs configuration.

This configuration is making a lot of assumptions as it is built as a package with Nix. This means that all packages are expected to be on the load-path already and compatibility is only guaranteed with the GNU Emacs version that is part of this package. Currently GNU Emacs 31.0.50.

The rough details:

themes
readable-typo-theme and readable-mono-theme
fonts
Iosevka Curly Slab, Iosevka Aile, Iosevka Etoile
buffer completion
corfu, completion-preview
minibuffer completion
vertico
package configuration
use-package
key definitions
keymap, repeat
code navigation
xref, dumb-jump, imenu-anywhere
syntax checker
flymake
persistence
desktop
language server integration
eglot
structured editing
puni

Nix:

Screenshots

org-mode

./media/org-mode-light.png

./media/org-mode-dark.png

markdown-mode

./media/markdown-mode-light.png

./media/markdown-mode-dark.png

emacs-lisp-mode

./media/emacs-lisp-mode-light.png

./media/emacs-lisp-mode-dark.png

Early initialization

;;; early-init.el --- Early Initialization -*- lexical-binding: t; -*-

Debug

Provide an easy way to toggle debug mode which will set certain variables to produce more informative output. It can be set either by providing the environment variable DEBUG or start Emacs with --debug-init.

(when (getenv "DEBUG") (setq init-file-debug t))
(setq debug-on-error (and (not noninteractive) init-file-debug))

Startup

Time the startup and display the startup time after completed.

(add-hook 'emacs-startup-hook
          (lambda ()
            (message "Loaded Emacs in %.03fs"
                     (float-time (time-subtract after-init-time before-init-time)))))

Temporarily reduce garbage collection to gain some performance boost during startup.

(let ((normal-gc-cons-threshold gc-cons-threshold)
      (normal-gc-cons-percentage gc-cons-percentage)
      (normal-file-name-handler-alist file-name-handler-alist)
      (init-gc-cons-threshold most-positive-fixnum)
      (init-gc-cons-percentage 0.6))
  (setq gc-cons-threshold init-gc-cons-threshold
        gc-cons-percentage init-gc-cons-percentage
        file-name-handler-alist nil)
  (add-hook 'after-init-hook
            `(lambda ()
               (setq gc-cons-threshold ,normal-gc-cons-threshold
                     gc-cons-percentage ,normal-gc-cons-percentage
                     file-name-handler-alist ',normal-file-name-handler-alist))))

Inhibit startup screen and messages. If you are new to Emacs it is recommended to not disable the startup screen as it has great content to get you going.

(setq inhibit-startup-echo-area-message t)
(setq inhibit-startup-screen t)
(setq initial-scratch-message nil)

Performance tweaks. Don’t load default library and use fundamental-mode to reduce amount of hooks.

(setq inhibit-default-init t)
(setq initial-major-mode 'fundamental-mode)

Disable package.el support. Packages are managed via Nix and disabling this gives a slight performance boost.

(setq package-enable-at-startup nil)

UI

Disable GUI components.

(setq use-dialog-box nil)
(push '(undecorated . t) default-frame-alist)
(push '(menu-bar-lines . 0) default-frame-alist)
(push '(tool-bar-lines . 0) default-frame-alist)
(push '(vertical-scroll-bars) default-frame-alist)

Don’t implicitly resize frames when changing various settings.

(setq frame-inhibit-implied-resize t)
(defvar global-text-scale-adjust-resizes-frames t)

Allow resizing by dragging internal border.

(push '(drag-internal-border . t) default-frame-alist)

Ignore X resources.

(advice-add #'x-apply-session-resources :override #'ignore)

Initialization

;;; init.el --- Initialization -*- lexical-binding: t; -*-

Package configuration

use-package

A macro for package customization, see use-package for further details.

This configuration is intended to support byte-compiling and is compiling with the strict option byte-compile-error-on-warn t. See the section about byte-compiling with information on how to support this use case.

(eval-when-compile
  (require 'use-package))

(eval-and-compile
  (defun use-package-ensure-ignore (&rest _args) t)
  (setq use-package-ensure-function #'use-package-ensure-ignore)

  (setq use-package-always-defer t)
  (setq use-package-hook-name-suffix nil))

(if init-file-debug
    (setq use-package-verbose t
          use-package-expand-minimally nil
          use-package-compute-statistics t)
  (setq use-package-verbose nil
        use-package-expand-minimally t))

Data

Provide a location where Emacs can store data and cache.

(defvar data-dir
  (if (getenv "XDG_DATA_HOME")
      (concat (getenv "XDG_DATA_HOME") "/emacs/")
    (expand-file-name "~/.local/share/emacs/"))
  "Directory for data.")

(defvar cache-dir
  (if (getenv "XDG_CACHE_HOME")
      (concat (getenv "XDG_CACHE_HOME") "/emacs/")
    (expand-file-name "~/.cache/emacs/"))
  "Directory for cache.")

(defvar pictures-dir
  (or (getenv "XDG_PICTURES_DIR")
      (expand-file-name "~/Pictures/"))
  "Directory for pictures.")

Customization

Put custom definitions in a temporary file so it doesn’t grow over time. This means all customization will disappear upon reboot and instead needs to be managed via the initialization file.

(setq custom-file (expand-file-name "custom.el" temporary-file-directory))

no-littering

Help keeping user-emacs-directory clean.

(use-package no-littering
  :ensure t
  :demand t
  :init
  (setq no-littering-etc-directory data-dir)
  (setq no-littering-var-directory cache-dir))

Performance

No second pass of case-insensitive search over auto-mode-alist.

(setq auto-mode-case-fold nil)

Give up some bidirectional functionality for slightly faster re-display.

(setq bidi-inhibit-bpa t)
(setq-default bidi-display-reordering 'left-to-right
              bidi-paragraph-direction 'left-to-right)

Defer processing font faces while scrolling and typing.

(setq fast-but-imprecise-scrolling t)
(setq jit-lock-defer-time 0)

gcmh

Adjust Garbage Collector threshold depending on activity and try to run garbage collection during idle instead.

(use-package gcmh
  :ensure t
  :hook
  (after-init-hook . gcmh-mode)
  :init
  (setq gcmh-idle-delay 5)
  (setq gcmh-high-cons-threshold (* 16 1024 1024)) ; 16MB
  (setq gcmh-verbose init-file-debug))

explain-pause-mode

Track how much time is spent in each function and present a view to investigate this data.

(use-package explain-pause-mode
  :ensure t
  :commands
  (explain-pause-mode)
  :init
  (when init-file-debug
    (explain-pause-mode 1)))

vlf

Large file support. This can view/edit/search and compare large files.

(use-package vlf :ensure t)

Libraries

all-the-icons

Library for displaying icons. I am trying to use icons where possible.

(use-package all-the-icons
  :ensure t
  :commands
  (all-the-icons-faicon all-the-icons-octicon))

cl-lib

Library providing functions inspired by Common Lisp. In many cases these functions feel more natural to use.

(require 'cl-lib)
(require 'cl-extra)

Functions

Prevent forms from producing output or other noise.

(defmacro quiet! (&rest forms)
  "Run FORMS without making any noise."
  `(if init-file-debug
       (progn ,@forms)
     (let ((message-log-max nil))
       (with-temp-message (or (current-message) "") ,@forms))))

(defun quiet-function-advice (orig-fn &rest args)
  "Advice used to make a function quiet.
Call ORIG-FN with ARGS and suppress the output.  Usage:

  (advice-add \\='orig-fn :around #\\='quiet-function-advice)"
  (quiet! (apply orig-fn args)))

Easily define REPL functions.

(defmacro define-repl (fn-name buffer-name command &rest args)
  "Define a REPL function named FN-NAME running COMMAND inside BUFFER-NAME."
  (let ((repl-buffer (concat "*" buffer-name "*")))
    `(defun ,fn-name ()
       ,(format "Run an inferior instance of %s inside Emacs." command)
       (interactive)
       (let ((buffer (get-buffer-create ,repl-buffer)))
	  (unless (comint-check-proc ,repl-buffer)
	    (apply 'make-comint-in-buffer ,buffer-name buffer ,command nil ,args))
	  (pop-to-buffer buffer)))))

Display

(defun display-ctrl-M-as-newline ()
  "Display `^M' as newline."
  (interactive)
  (setq buffer-display-table (make-display-table))
  (aset buffer-display-table ?\^M [?\n]))

Frame

Screenshot current frame in .svg or .png format.

(defun screenshot (type)
  "Save a screenshot of the current frame as an image in TYPE format.
Saves to a temp file and puts the filename in the kill ring."
  (let* ((ext (concat "." (symbol-name type)))
         (filename (make-temp-file "Emacs-" nil ext))
         (data (x-export-frames nil type)))
    (with-temp-file filename
      (insert data))
    (kill-new filename)
    (message filename)))

(defun screenshot-svg ()
  "Save a screenshot of the current frame as an SVG image.
Saves to a temp file and puts the filename in the kill ring."
  (interactive)
  (screenshot 'svg))

(defun screenshot-png ()
  "Save a screenshot of the current frame as an PNG image.
Saves to a temp file and puts the filename in the kill ring."
  (interactive)
  (screenshot 'png))

Process

(defun send-buffer-to-ssh ()
  "Send the whole buffer to the *ssh* process."
  (interactive)
  (process-send-region "*ssh*" (point-min) (point-max)))

(defun send-to-ssh ()
  "Send selected region or current line to the *ssh* process."
  (interactive)
  (let ((procbuf "*ssh*"))
    (if (use-region-p)
        (process-send-region procbuf (region-beginning) (region-end))
      (process-send-string procbuf (thing-at-point 'line t)))))

Window

Fringe control:

(define-minor-mode hide-fringes-mode
  "Toggle hiding of fringes."
  :group 'fringe
  (if hide-fringes-mode
      (set-window-fringes nil 0 0 nil)
    (set-window-fringes nil left-fringe-width right-fringe-width t)))

(define-minor-mode global-hide-fringes-mode
  "Toggle hiding of fringes globally."
  :global t
  :group 'fringe
  (if global-hide-fringes-mode
        (set-fringe-style 0)
      (set-fringe-style nil)))

Localization

(setq-default calendar-week-start-day 1)

Shell

Set shell to bash as fish is not compatible with all packages using the shell.

(setq shell-file-name "bash")

Region

Fix WSL/WSLg copy issue.

(setq select-active-regions nil)

UX

Disable bell (both visual and audible).

(setq ring-bell-function #'ignore)
(setq visible-bell nil)

Use y / n instead of yes / no.

(setq confirm-kill-emacs #'y-or-n-p)
(fset #'yes-or-no-p #'y-or-n-p)

Hide M-x commands which does not work in the current buffer.

(setq read-extended-command-predicate #'command-completion-default-include-p)

Appearance

Typography

Size

(defvar init-line-spacing 0.25
  "Spacing between lines.")

(defvar init-default-font-height 105
  "Default font height.")

Face

(defvar init-fixed-pitch-font "Iosevka Curly Slab"
  "Font used for fixed-pitch faces.")

(defvar init-variable-pitch-font "Iosevka Aile"
  "Font used for variable-pitch faces.")

(defvar init-serif-font "Iosevka Etoile"
  "Font used for serif faces.")

(defvar init-unicode-font "Noto Sans Mono"
  "Fallback font used for unicode glyphs.")

(defvar init-symbol-fonts '("Noto Emoji" "Symbola")
  "Fonts used for symbol/emoji faces.")

Setup symbol fonts.

(dolist (font init-symbol-fonts)
  (set-fontset-font t 'symbol font nil 'append))

Line length

(setq-default fill-column 110)

Underline

Underline line at descent position, not baseline position.

(setq x-underline-at-descent-line t)

Theme

Use a bar cursor by default.

(setq-default cursor-type 'bar)

Readable typography

(use-package readable-typo-theme
  :ensure t
  :demand t
  :init
  (setq readable-typo-theme-default-font-height init-default-font-height)
  (setq readable-typo-theme-line-spacing init-line-spacing)
  (setq readable-typo-theme-fixed-pitch-font init-fixed-pitch-font)
  (setq readable-typo-theme-fixed-pitch-serif-font init-fixed-pitch-font)
  (setq readable-typo-theme-variable-pitch-font init-variable-pitch-font)
  (setq readable-typo-theme-serif-font init-serif-font)
  :config
  (load-theme 'readable-typo t))

Readable monochrome

(use-package readable-mono-theme
  :ensure t
  :demand t
  :config
  (load-theme 'readable-mono t))

Echo area

Attach a face to the echo area in order to style it differently.

(dolist (buffer-name '(" *Echo Area 0*"
                       " *Echo Area 1*"))
  (with-current-buffer (get-buffer-create buffer-name)
    (setq-local face-remapping-alist
                '((default readable-typo-theme-echo-area)))))

Functions

(defun toggle-theme-mode ()
  "Toggle dark/light `background-mode' and reload all loaded themes."
  (interactive)
  (customize-set-variable
   'frame-background-mode
   (if (eq 'light (frame-parameter nil 'background-mode)) 'dark 'light))
  (customize-set-variable 'custom-enabled-themes custom-enabled-themes))

(defun reload-themes ()
  "Reload all loaded themes."
  (interactive)
  (customize-set-variable 'custom-enabled-themes custom-enabled-themes))

Layout

Frame

See Frame Layout for details and terminology.

  • Add some padding around the whole window (internal-border-width) to provide some air.
(cl-pushnew '(internal-border-width . 16) default-frame-alist :test #'equal)

Fringe

Setup fringes on both sides and display an indicator for buffer boundaries on the right side. Display fringes outside margins to have the padding on the inside.

(setq-default fringes-outside-margins t
              left-fringe-width 8
              right-fringe-width 8
              indicate-buffer-boundaries 'right)

Padding

Add margins inside windows to make text feel less crowded. Padding around the frame is configured via the internal-border-width in the Frame section.

(setq-default left-margin-width 1
              right-margin-width 1)

Borders

Add window dividers, mainly to add a border below the mode line.

(use-package frame
  :hook
  ((after-make-frame-functions
    server-after-make-frame-hook) . window-divider-mode)
  :init
  (setq window-divider-default-places t)
  (setq window-divider-default-bottom-width 1)
  (setq window-divider-default-right-width 1))

Mode line

I try to retain functionality from the original mode line as much as possible, but I also want to simplify it slightly and separate into two parts; left side and right side mode line. There is a helper function in order to fill up the space needed to make the mode line appear on the right side. Also the coding system related information will be hidden if using utf-8-unix. I am also not displaying any minor mode lighters.

Define a variable to conveniently access only the major mode part of mode-line-modes.

(defvar mode-line-major-mode
  `(:propertize ("" mode-name)
                help-echo "Major mode\n\
mouse-1: Display major mode menu\n\
mouse-2: Show help for major mode\n\
mouse-3: Toggle minor modes"
                mouse-face mode-line-highlight
                local-map ,mode-line-major-mode-keymap))

Configure the order and components of the mode line.

(setq-default mode-line-format
              '("%e" mode-line-front-space
                mode-line-misc-info
                (vc-mode vc-mode)
                "  "
                mode-line-modified
                mode-line-remote
                mode-line-buffer-identification
                mode-line-position
                (:eval (mode-line-right))
                mode-line-end-spaces))

Right alignment

Setup the right aligned mode line and helper function to display it.

(defvar mode-line-right-format nil
  "The mode line to display on the right side.")

(defun mode-line-right ()
  "Render the `mode-line-right-format'."
  (let ((formatted-line (format-mode-line mode-line-right-format)))
    (list
     (propertize
      " "
      'display
      `(space :align-to (- (+ right right-fringe right-margin) ,(string-width formatted-line))))
     formatted-line)))

Move default components to the right side of the mode line.

(setq mode-line-right-format
      (list '(:eval mode-line-mule-info)
            "  "
            mode-line-major-mode))

Position

Add position information including column and line number but skip the percentage.

(setq mode-line-position-column-line-format '(" L%l:C%C"))
(setq mode-line-percent-position nil)
(column-number-mode 1)
(line-number-mode 1)

Coding system

To reduce unnecessary information coding system will not be shown by default if the file is UTF-8 with UNIX end-of-line.

  • Only display “end of line”-mnemonic when not UNIX end-of-line.
  • Only display coding system when not UTF-8.
  • Other cases displays either with warning/error face in order to draw attention.
(setq eol-mnemonic-unix ""
      eol-mnemonic-dos (propertize "[CR+LF]" 'face 'warning)
      eol-mnemonic-mac (propertize "[CR]" 'face 'warning)
      eol-mnemonic-undecided (propertize "[?]" 'face 'error))

(let ((coding (nthcdr 2 mode-line-mule-info)))
  (setcar coding '(:eval (if (string-equal "U" (format-mode-line "%z"))
                             ""
                           (propertize "[%z]" 'face 'warning))))
  coding)

Indentation

Display information about the current indentation settings.

(use-package indent-info
  :ensure t
  :hook
  (after-init-hook . global-indent-info-mode)
  :init
  (setq indent-info-display-change-message-p nil)
  (setq indent-info-insert-target 'mode-line-mule-info)
  (setq indent-info-space-format "Spaces: %s")
  (setq indent-info-tab-format "Tab Size: %s"))

Hide mode line

Support hiding the mode line, this can be useful for different modes displaying documents or presentation.

(use-package hide-mode-line
  :ensure t
  :commands
  (hide-mode-line-mode
   turn-on-hide-mode-line-mode
   turn-off-hide-mode-line-mode))

Icons

Modified

(defun mode-line-modified-icons ()
  "Icon representation of `mode-line-modified'."
  (cond (buffer-read-only
         (concat (all-the-icons-octicon "lock" :v-adjust -0.05) " "))
        ((buffer-modified-p)
         (concat (all-the-icons-faicon "floppy-o" :v-adjust -0.05) " "))
        ((and buffer-file-name
              (not (file-exists-p buffer-file-name)))
         (concat (all-the-icons-octicon "circle-slash" :v-adjust -0.05) " "))))

(setq-default mode-line-modified '((:eval (mode-line-modified-icons))))

Remote

(defun mode-line-remote-icons ()
  "Icon representation of `mode-line-remote'."
  (when (and buffer-file-name
             (file-remote-p buffer-file-name))
    (concat (all-the-icons-octicon "radio-tower" :v-adjust -0.02) " ")))

(setq-default mode-line-remote   '((:eval (mode-line-remote-icons))))

VCS

Shorten long Git branch names as well as replace Git prefix with a nice icon.

(defun vc-git-mode-line-shorten (string)
  "Shorten `version-control' STRING in mode-line and add icon."
  (cond
   ((string-prefix-p "Git" string)
    (concat (all-the-icons-octicon "git-branch" :v-adjust -0.05)
            " "
            (if (> (length string) 30)
                (concat (substring-no-properties string 4 30) "")
              (substring-no-properties string 4))))
   (t
    string)))
(advice-add 'vc-git-mode-line-string :filter-return #'vc-git-mode-line-shorten)

Keybindings

Leader keys

(defvar leader-key "C-,"
  "The key used for most custom operations.")
(defvar local-leader-key "C-."
  "The key used for major mode operations.")

Prefixes

(defvar toggle-prefix "C-'"
  "Key prefix for commands related to toggling.")
(defvar next-prefix "M-]"
  "Key prefix used for commands doing a next operation.")
(defvar prev-prefix "M-["
  "Key prefix used for commands doing a previous operation.")

Repeat

(use-package repeat
  :hook
  (after-init-hook . repeat-mode))

Global

;; Editing
(keymap-global-set "<XF86Tools>" #'just-one-space)
(keymap-global-set "M-p" #'completion-at-point)
(keymap-global-set "C-M-y" #'duplicate-dwim)
(keymap-global-set "C-x C-/" #'revert-buffer)
(keymap-global-set "C-z" #'zap-up-to-char)
(keymap-global-set "<remap> <upcase-word>" #'upcase-dwim)
(keymap-global-set "<remap> <downcase-word>" #'downcase-dwim)
(keymap-global-set "<remap> <capitalize-word>" #'capitalize-dwim)
;; Files
(keymap-global-set "C-x j" #'find-sibling-file)
;; Region
(keymap-global-set "C-x r S" #'sort-lines)

Navigation

(keymap-set goto-map "k" #'eldoc-doc-buffer)

Window

(use-package window
  :bind
  ((:map window-prefix-map
         ("d" . toggle-dedicated-window)
         ("m" . maximize-window)
         ("r" . window-configuration-to-register)
         ("w" . window-toggle-side-windows))
   (:repeat-map resize-window-repeat-map
                ("+" . balance-windows)
                ("-" . fit-window-to-buffer)
                ("m" . maximize-window))
   (:repeat-map buffer-repeat-map
                ("b" . next-buffer)
                ("B" . previous-buffer)
                ("[" . previous-buffer)
                ("]" . next-buffer))
   (:repeat-map other-window-repeat-map
                ("o" . other-window)
                ("O" . other-window-reverse-repeat)))
  :config
  (defun toggle-dedicated-window ()
    "Toggle selected window as dedicated window."
    (interactive)
    (set-window-dedicated-p (selected-window)
                            (not (window-dedicated-p (selected-window)))))

  (defun other-window-reverse-repeat ()
    (interactive)
    (setq repeat-map 'other-window-repeat-map)
    (other-window -1)))

Next/Previous

(defvar-keymap next-map
  :doc "Keymap for the next key sequences."
  :prefix 'next-map-prefix
  "b" '("Buffer" . next-buffer)
  "e" '("Error" . next-error))
(keymap-global-set next-prefix 'next-map-prefix)

(defvar-keymap prev-map
  :doc "Keymap for the prev key sequences."
  :prefix 'prev-map-prefix
  "b" '("Buffer" . previous-buffer)
  "e" '("Error" . previous-error))
(keymap-global-set prev-prefix 'prev-map-prefix)

Toggle

(keymap-global-set toggle-prefix 'toggle-map-prefix)
(defvar-keymap toggle-map
  :doc "Keymap for toggle key sequences."
  :prefix 'toggle-map-prefix
  "*" '("Light/Dark theme" . toggle-theme-mode)
  "c" '("Changes" . highlight-changes-mode)
  "d" '("Debug on error" . toggle-debug-on-error)
  "f" '("Code folding" . hs-minor-mode)
  "F" '("Follow" . follow-mode)
  ;; Group together as one mode?
  "g" '("Sub-word" . subword-mode)
  "G" '("Readable camelCase" . glasses-mode)
  "h" '("Line highlight" . hl-line-mode)
  "l" '("Line numbers" . global-display-line-numbers-mode)
  "t" '("Truncate lines" . toggle-truncate-lines)
  "V" '("Variable-pitch" . variable-pitch-mode)
  "w" '("White-space" . whitespace-mode)
  "x" '("Syntax checker" . flymake-mode))

Leader

(keymap-global-set leader-key 'leader-map-prefix)
(defvar-keymap leader-map
  :doc "Keymap for leader key sequences."
  :prefix 'leader-map-prefix
  "m" 'gnus
  "P" 'list-processes
  "s" 'screenshot-svg
  "S" 'screenshot-png
  "x" 'regexp-builder
  "w" 'eww)

(keymap-global-set local-leader-key 'local-leader-map-prefix)
(defvar-keymap local-leader-map
  :doc "Keymap for leader key sequences."
  :prefix 'local-leader-map-prefix)

Completion

Enable indentation and completion with the TAB key.

(setq tab-always-indent 'complete)

Cycle with the TAB key if there are only few candidates.

(setq completion-cycle-threshold 3)

Preview

Completion preview inline, with quick completion key.

(use-package completion-preview
  :hook
  ((comint-mode-hook
    eshell-mode-hook
    prog-mode-hook
    text-mode-hook) . completion-preview-mode)
  :bind
  (:map completion-preview-active-mode-map
        ("C-e" . completion-preview-insert))
  :init
  (setq completion-preview-minimum-symbol-length 2)
  :config
  (cl-pushnew 'org-self-insert-command completion-preview-commands :test #'equal))

Style

orderless

Space-separated matching components matching in any order.

(use-package orderless
  :ensure t
  :init
  (setq completion-styles '(substring orderless))
  (setq completion-category-defaults nil)
  (setq completion-category-overrides '((file (styles partial-completion)))))

Buffer

corfu

Completion Overlay Region FUnction.

(use-package corfu
  :ensure t
  :commands
  (corfu-mode
   corfu-indexed-mode
   global-corfu-mode)
  :hook
  (minibuffer-setup-hook . corfu-enable-in-minibuffer)
  (corfu-mode-hook . corfu-popupinfo-mode)
  :bind
  (:map corfu-map
        ([return] . nil)
        ("RET" . nil)
        ("TAB" . corfu-next)
        ([tab] . corfu-next)
        ("S-TAB" . corfu-previous)
        ([backtab] . corfu-previous)
        ("C-e" . corfu-complete))
  :init
  (setq corfu-cycle t)
  (setq corfu-preselect 'first)
  (global-corfu-mode 1)
  (corfu-indexed-mode 1)
  :config
  (defun corfu-enable-in-minibuffer ()
    "Enable Corfu completion in the minibuffer, e.g., `eval-expression'."
    (when (where-is-internal #'completion-at-point (list (current-local-map)))
      (corfu-mode 1))))

Minibuffer

vertico

Vertical interactive completion UI.

(use-package vertico
  :ensure t
  :commands
  (vertico-insert
   vertico-exit)
  :hook
  (after-init-hook . vertico-mode)
  :bind
  (:map vertico-map
        ("C-e" . vertico-move-end-of-line-or-insert))
  :init
  (defun vertico-move-end-of-line-or-insert (arg)
    "Move to end of line or insert current candidate.
   ARG lines can be used.

   When only one candidate exists exit input after insert."
    (interactive "p")
    (if (eolp)
        (progn
          (vertico-insert)
          (when (= vertico--total 1)
            (vertico-exit)))
      (move-end-of-line arg))))

Extensions

all-the-icons-completion

(use-package all-the-icons-completion
  :ensure t
  :hook
  (marginalia-mode-hook . all-the-icons-completion-marginalia-setup))

cape

Completion At Point Extensions.

(use-package cape
  :ensure t
  :commands
  (cape-wrap-silent
   cape-wrap-purify)
  :hook
  (prog-mode-hook . init-cape-capf)
  :bind
  (([remap dabbrev-expand] . cape-dabbrev)
   (:prefix-map completion-prefix-map :prefix "M-P"
                ("d" . cape-dabbrev)
                ("h" . cape-history)
                ("f" . cape-file)
                ("k" . cape-keyword)
                ("p" . completion-at-point)
                ("s" . cape-elisp-symbol)
                ("a" . cape-abbrev)
                ("l" . cape-line)
                ("w" . cape-dict)
                ("\\" . cape-tex)
                ("&" . cape-sgml)
                ("r" . cape-rfc1345))
   (:map corfu-map
         ("C-x C-f" . cape-file)))
  :config
  (defun init-cape-capf ()
    (cl-pushnew #'cape-dabbrev completion-at-point-functions :test #'equal)
    (cl-pushnew #'cape-elisp-symbol completion-at-point-functions :test #'equal)
    (cl-pushnew #'cape-file completion-at-point-functions :test #'equal))

  (advice-add 'pcomplete-completions-at-point :around #'cape-wrap-silent)
  (advice-add 'pcomplete-completions-at-point :around #'cape-wrap-purify))

consult

Commands compatible with completing-read.

(use-package consult
  :ensure t
  :bind
  (([remap bookmark-jump] . consult-bookmark)
   ([remap goto-line] . consult-goto-line)
   ([remap imenu] . consult-imenu)
   ([remap jump-to-register] . consult-register)
   ([remap point-to-register] . consult-register-store)
   ([remap switch-to-buffer] . consult-buffer)
   ([remap yank-pop] . consult-yank-pop)
   ("C-c k" . consult-kmacro)
   ("C-c r" . consult-recent-file)
   (:map search-map
         ("g" . consult-ripgrep)
         ("m" . consult-mark)
         ("M-m" . consult-global-mark)))
  :init
  (setq consult-preview-key "M-RET"))

(use-package consult-xref
  :after xref
  :functions
  (consult-xref)
  :init
  (setq xref-show-xrefs-function #'consult-xref)
  (setq xref-show-definitions-function #'consult-xref))

dabbrev

(use-package dabbrev
  :init
  (setq dabbrev-case-replace nil)
  (setq dabbrev-ignored-buffer-regexps '("\\.\\(?:pdf\\|jpe?g\\|png\\)\\'")))

kind-icon

Icons for buffer completions.

(use-package kind-icon
  :ensure t
  :after corfu
  :commands
  (kind-icon-margin-formatter)
  :init
  (cl-pushnew #'kind-icon-margin-formatter corfu-margin-formatters :test #'equal))

marginalia

Annotations for completion candidates.

(use-package marginalia
  :ensure t
  :defer 2
  :commands
  (marginalia-mode)
  :config
  (marginalia-mode 1))

Help

(use-package help
  :bind
  (:map help-map
        ("B" . find-library)
        ("u" . describe-face)
        ("U" . list-faces-display)
        ("'" . describe-char)))

(use-package help-at-pt
  :init
  (setq help-at-pt-timer-delay 0.1)
  (setq help-at-pt-display-when-idle '(flymake-diagnostic)))

ghelp

Generic help system.

(use-package ghelp
  :ensure t
  :bind
  ((:map help-map
         ("A" . ghelp-describe-elisp)
         ("f" . ghelp-describe-function)
         ("k" . ghelp-describe-key)
         ("v" . ghelp-describe-variable))
   (:map goto-map
         ("h" . ghelp-describe-at-point))))

helpful

Better *help* buffer.

(use-package helpful
  :ensure t
  :bind
  (:map help-map
        ("C" . helpful-command)
        ("M" . helpful-macro)))

Display

Window

Favor horizontal splits.

(setq split-width-threshold nil)

Respect display actions for both automatic and manual window switching.

(setq switch-to-buffer-obey-display-actions t)

Resize pixelwise.

(setq window-resize-pixelwise t)

Hide asynchronous shell command buffers.

(cl-pushnew '("^*Async Shell Command*" . (display-buffer-no-window))
            display-buffer-alist
            :test #'equal)

Manage layouts

Undo/redo between window layouts.

(use-package winner
  :hook
  (window-setup-hook . winner-mode)
  :bind
  (:repeat-map winner-repeat-map
               ("[" . winner-undo)
               ("]" . winner-redo)
               ("M-[" . winner-undo)
               ("M-]" . winner-redo))
  :init
  (setq winner-dont-bind-my-keys t)
  (keymap-set next-map next-prefix '("Window History" . winner-redo))
  (keymap-set prev-map prev-prefix '("Window History" . winner-undo)))

Transpose window arrangement.

(use-package transpose-frame
  :ensure t
  :bind
  ((:map window-prefix-map
         ("t" . transpose-frame)
         ("f" . flip-frame)
         ("F" . flop-frame))
   (:repeat-map window-arrangement-repeat-map
                ("t" . transpose-frame)
                ("f" . flip-frame)
                ("F" . flop-frame))))

Manage “popups”.

(use-package popper
  :ensure t
  :commands
  (popper-display-popup-at-bottom)
  :hook
  (after-init-hook . popper-mode)
  (popper-mode-hook . popper-echo-mode)
  :bind
  (("C-`" . popper-toggle)
   ("C-M-`" . popper-cycle)
   (:map window-prefix-map
        ("p" . popper-toggle-type)))
  :init
  (setq popper-display-function #'popper-display-popup-at-bottom)
  (setq popper-reference-buffers
        '("Output\\*$"
          "\\*Messages\\*"
          "\\*Warnings\\*"
          "\\*devdocs\\*"
          "\\*envrc\\*"
          "^\\*eldoc"
          elisp-refs-mode
          flymake-diagnostics-buffer-mode
          ghelp-page-mode
          (lambda (buf)
            (with-current-buffer buf
              (derived-mode-p '(compilation-mode
                                comint-mode
                                help-mode)))))))

Buffer

Cursor

(define-minor-mode hide-cursor-mode
    "Toggle hiding of the cursor."
    :lighter " Hide Cursor"
    (if hide-cursor-mode
        (setq cursor-type nil)
      (kill-local-variable 'cursor-type)))

Buttons

Buttonize URLs and e-mail addresses in the current buffer.

(use-package goto-addr
  :hook
  (text-mode-hook . goto-address-mode)
  (prog-mode-hook . goto-address-prog-mode))

Line highlight

Disabled by default. When enabled, only highlight in the selected window.

(use-package hl-line
  :hook
  (hl-line-mode-hook . hl-line-number-mode)
  (global-hl-line-mode-hook . global-hl-line-number-mode)
  :init
  (setq hl-line-sticky-flag nil)
  (setq global-hl-line-sticky-flag nil)
  :preface
  (autoload 'face-remap-add-relative "face-remap")
  (autoload 'face-remap-remove-relative "face-remap")

  (defvar-local hl-line-number--current-line-remap nil
    "Face remapping cookie for `line-number-current-line' to `hl-line'.")

  (define-global-minor-mode global-hl-line-number-mode hl-line-number-mode hl-line-number-mode
    :group 'hl-line)

  (define-minor-mode hl-line-number-mode
    "Toggle highlighting of the current line number."
    :group 'hl-line
    (if (or global-hl-line-mode hl-line-mode)
        (setq hl-line-number--current-line-remap
              (face-remap-add-relative 'line-number-current-line 'hl-line))
      (face-remap-remove-relative hl-line-number--current-line-remap)
      (setq hl-line-number--current-line-remap nil))))

Line wrapping

adaptive-wrap

(use-package adaptive-wrap
  :ensure t
  :hook
  ((prog-mode-hook
    text-mode-hook) . adaptive-wrap-prefix-mode))

Visual Fill Column

Soft wrap lines according to fill-column in visual-line-mode.

(use-package visual-fill-column
  :ensure t
  :init
  (setq visual-fill-column-center-text t))

(use-package virtual-auto-fill
  :ensure t
  :commands
  (virtual-auto-fill-mode)
  :hook
  (text-mode-hook . virtual-auto-fill-mode)
  :init
  (keymap-set toggle-map "SPC" '("Virtual auto fill" . virtual-auto-fill-mode)))

Page breaks

Display page breaks as a horizontal line.

(use-package page-break-lines
  :ensure t
  :defer 3
  :commands
  (global-page-break-lines-mode)
  :config
  (global-page-break-lines-mode 1))

Tables

(use-package valign
  :ensure t
  :hook
  ((markdown-mode-hook
    org-mode-hook) . valign-mode)
  :init
  (setq valign-fancy-bar t))

Visible

Making invisible text temporarily visible.

(use-package simple
  :commands
  (visible-mode)
  :init
  (keymap-set toggle-map "v" '("Visibility" . visible-mode)))

Whitespace

Display whitespace.

(use-package whitespace
  :init
  (setq whitespace-line-column fill-column)
  (setq whitespace-style
        '(face tabs tab-mark spaces space-mark trailing lines-tail))
  (setq whitespace-display-mappings
        '((tab-mark 9 [8250 9])
          (newline-mark 10 [172 10])
          (space-mark 32 [183] [46]))))

Editing

Indentation

Convert between tabs and spaces (only tabify initial white-space).

(setq-default tabify-regexp "^\t* [ \t]+")

Text flow

Wrap at words.

(setq-default word-wrap t)

Kill-ring

Save clipboard contents into kill-ring before replacing them.

(setq save-interprogram-paste-before-kill t)
(setq kill-ring-max 30)

Parenthesis

Automatic parenthesis pairing and highlighting.

(electric-pair-mode 1)
(show-paren-mode 1)
(setq show-paren-context-when-offscreen t)

Auto-typing

tempel

(use-package tempel
  :ensure t
  :commands
  (tempel-expand)
  :hook
  ((eshell-mode-hook
    prog-mode-hook
    text-mode-hook) . tempel-setup-capf)
  :bind
  (("M-+" . tempel-complete)
   ("M-*" . tempel-insert))
  :config
  (defun tempel-setup-capf ()
    (setq-local completion-at-point-functions
                (cons #'tempel-expand
                      completion-at-point-functions)))

  (setq tempel-path (concat user-emacs-directory "templates")))

Packages

dtrt-indent

Guess indentation offset and adjust the corresponding setting.

(use-package dtrt-indent
  :ensure t
  :hook
  (prog-mode-hook . dtrt-indent-mode)
  :init
  (setq dtrt-indent-ignore-single-chars-flag t)
  (setq dtrt-indent-run-after-smie t)
  (setq dtrt-indent-verbosity 0)
  :config
  (cl-pushnew '(default default (standard-indent tab-width)) dtrt-indent-hook-mapping-list :test #'equal)
  (cl-pushnew '(groovy-mode default tab-width) dtrt-indent-hook-mapping-list :test #'equal)
  (cl-pushnew '(js-ts-mode javascript js-indent-level) dtrt-indent-hook-mapping-list :test #'equal))

grugru

Cycle through words, symbols and patterns.

(use-package grugru
  :ensure t
  :commands
  (grugru-forward
   grugru-backward)
  :functions
  (grugru-define-global
   grugru-define-on-major-mode)
  :bind
  (:repeat-map grugru-repeat-map
               ("r" . grugru-forward)
               ("R" . grugru-backward)
               ("SPC" . grugru-select)
               ("[" . grugru-backward)
               ("]" . grugru-forward))
  :init
  (keymap-set next-map "r" '("Rotate text" . grugru-forward))
  (keymap-set prev-map "r" '("Rotate text" . grugru-backward))
  :config
  (grugru-define-global 'symbol '("assert" "refute"))
  (grugru-define-global 'symbol '("true" "false"))
  (grugru-define-global 'symbol '("yes" "no")))

(use-package grugru-default
  :after grugru
  :functions grugru-default-setup
  :init (grugru-default-setup))

puni

Structured editing with soft deletion and balanced expressions.

(use-package puni
  :ensure t
  :commands
  (puni-mode
   puni-contract-region
   puni-expand-region
   puni-kill-line
   puni-kill-active-region
   puni-mark-list-around-point)
  :hook
  (after-init-hook . puni-global-mode)
  :bind
  ((:map puni-mode-map
         ([remap transpose-sexps] . puni-transpose)
         ("M-W" . puni-kill-ring-save-line)
         ("M-'" . puni-kill-list-around-point)
         ("M-D" . puni-splice)
         ("M-R" . puni-squeeze)
         ("M-S <" . puni-wrap-angle)
         ("M-S {" . puni-wrap-curly)
         ("M-S (" . puni-wrap-round)
         ("M-S [" . puni-wrap-square)
         ("C-w" . puni-whole-line-or-region-kill)
         ("M-w" . puni-whole-line-or-region-kill-ring-save)
         ("M-;" . puni-comment-line))
   (:repeat-map puni-region-repeat-map
                ("SPC" . puni-expand-region)
                ("[" . puni-contract-region)
                ("]" . puni-expand-region)))
  :init
  (keymap-set toggle-map toggle-prefix '("Structured editing" . puni-mode))
  (keymap-set next-map "SPC" '("Expand region" . puni-expand-region))
  (keymap-set prev-map "SPC" '("Contract region" . puni-contract-region))
  :config
  (defun puni-comment-line (arg)
    "Comment whole structured line(s) based on ARG or active region."
    (interactive "P")
    (cl-letf (((symbol-function 'kill-region) #'comment-region))
      (puni-kill-line arg)))

  (defun puni-kill-ring-save-line (arg)
    "Save whole structured line(s) based on ARG or active region."
    (interactive "P")
    (cl-letf (((symbol-function 'kill-region) #'kill-ring-save))
      (puni-kill-line arg)))

  (defun puni-whole-line-or-region-kill (arg)
    "Kill whole structured line(s) based on ARG or active region."
    (interactive "P")
    (if (use-region-p)
        (puni-kill-active-region)
      (let ((kill-whole-line t))
        (if (and (looking-at-p "^$") (= (or arg 1) 1))
            (kill-line)
          (save-excursion
            (beginning-of-line)
            (puni-kill-line arg))))))

  (defun puni-whole-line-or-region-kill-ring-save (arg)
    "Save whole structured line(s) based on ARG or active region."
    (interactive "P")
    (cl-letf (((symbol-function 'kill-region) #'kill-ring-save))
      (puni-whole-line-or-region-kill arg)))

  (defun puni-kill-list-around-point ()
    (interactive)
    (puni-mark-list-around-point)
    (kill-region nil nil t)))

separedit

(use-package separedit
  :ensure t
  :bind
  (:map prog-mode-map ("C-c '" . separedit))
  :init
  (setq separedit-preserve-string-indentation t))

string-inflection

Conversion between different variable naming conventions. Toggle between snake/pascal/camel/up/kebab-case or capital underscore.

(use-package string-inflection
  :ensure t
  :bind
  ("M-_" . string-inflection-all-cycle))

visual-replace

Visually indicate what will be modified in a search and replace as you type.

(use-package visual-replace
  :ensure t
  :hook
  (after-init-hook . visual-replace-global-mode))

Buffers

Prevent generation of useless lock and backup files.

(setq create-lockfiles nil)
(setq make-backup-files nil)

Don’t require confirmation when opening a new buffer.

(setq confirm-nonexistent-file-or-buffer t)

Remove visual indicators from non-selected windows

(setq highlight-nonselected-windows nil)
(setq-default cursor-in-non-selected-windows nil)

Auto save

(use-package files
  :hook
  (after-init-hook . auto-save-visited-mode)
  :init
  (setq auto-save-no-message t)
  (setq save-abbrevs 'silently))

Auto executable scripts

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

Minibuffer

Enable recursive minibuffers.

(setq enable-recursive-minibuffers t)

Do not allow the cursor in the minibuffer prompt.

(setq minibuffer-prompt-properties
      '(read-only t cursor-intangible t face minibuffer-prompt))
(add-hook 'minibuffer-setup-hook #'cursor-intangible-mode)

Give some more room to the minbuffer.

(setq max-mini-window-height 0.3)
(setq resize-mini-windows 'grow-only)

No fringes

Don’t show fringes in the minibuffer.

(defun disable-minibuffer-window-fringes (&rest _)
  "Disable the window fringes for minibuffer window."
  (set-window-fringes (minibuffer-window) 0 0 nil))
(add-hook 'minibuffer-setup-hook #'disable-minibuffer-window-fringes)

History

Track minibuffer history

(setq history-delete-duplicates t)
(setq history-length 500)

embark

(use-package embark
  :ensure t
  :commands
  (embark-prefix-help-command)
  :bind
  (("C-h B" . embark-bindings)
   ("M-o" . embark-dwim)
   ("M-O" . embark-act)
   (:map vertico-map ("C-SPC" . embark-select)))
  :init
  (setq prefix-help-command #'embark-prefix-help-command)
  (setq embark-indicators
        '(embark-minimal-indicator
          embark-highlight-indicator
          embark-isearch-highlight-indicator)))

(use-package embark-consult :ensure t)

Miniedit

Edit minibuffer in a new temporary buffer by pressing C-c '.

(use-package miniedit
  :ensure t
  :bind
  (:map minibuffer-local-map ("C-c '" . miniedit))
  :init
  (setq miniedit-show-help-p nil))

Scrolling

More procedural scrolling.

(setq auto-window-vscroll nil)
(setq hscroll-margin 5)
(setq hscroll-step 5)
(setq scroll-margin 0)
(setq scroll-preserve-screen-position t)

(setq-default scroll-down-aggressively 0.01)
(setq-default scroll-up-aggressively 0.01)

(use-package pixel-scroll
  :hook
  ((image-mode-hook
    markdown-mode-hook
    org-mode-hook) . pixel-scroll-precision-mode))

Packages

autorevert

Revert buffers when underlying files change.

(use-package autorevert
  :hook
  (image-mode-hook . auto-revert-mode)
  :init
  (setq auto-revert-verbose nil))

eldoc

(use-package eldoc
  :hook
  (after-init-hook . global-eldoc-mode))

epithet

Descriptive buffer names or project relative paths for buffer names.

(use-package epithet
  :ensure t
  :functions
  (epithet-relative-project-name)
  :hook
  ((eww-after-render-hook
    help-mode-hook
    Info-selection-hook
    occur-mode-hook
    prog-mode-hook
    shell-mode-hook
    text-mode-hook) . epithet-rename-buffer)
  :config
  (defun epithet-relative-project-name ()
    (when-let* ((project (project-current))
                (buffer-file-name (buffer-file-name)))
      (let* ((project-root (expand-file-name (project-root project)))
             (prefix (file-name-directory (directory-file-name project-root)))
             (buffer (expand-file-name buffer-file-name)))
        (string-trim buffer prefix))))

  (cl-pushnew #'epithet-relative-project-name epithet-suggesters :test #'equal))

pairable

(use-package pairable
  :ensure t
  :init
  (keymap-set toggle-map "p" '("Pair-programming" . pairable-mode)))

readable

(use-package readable
  :ensure t
  :hook
  ((eww-mode-hook
    Info-mode-hook
    nov-mode-hook
    text-mode-hook) . readable-mode))

Navigation

Allow repeated mark popping. This behavior is similar to Vim’s C-o. With this configuration you can press C-u and continuously C-SPC to jump to previous entries in the mark ring.

(setq set-mark-command-repeat-pop t)

Dired

(use-package dired
  :hook
  (dired-mode-hook . auto-revert-mode)
  (dired-mode-hook . hl-line-mode)
  (dired-mode-hook . dired-hide-details-mode)
  :init
  (setq dired-listing-switches "-al --group-directories-first")
  ;; Always copy/delete recursively
  (setq dired-recursive-copies  'always)
  (setq dired-recursive-deletes 'top))

Editable

(use-package wdired
  :bind
  (:map dired-mode-map ("C-c '" . wdired-change-to-wdired-mode)))

Search

(use-package find-dired
  :bind
  ("C-x D" . find-dired)
  :init
  (setq find-ls-option '("-print0 | xargs -0 ls -ld" . "-ld")))

Sidebar

(use-package dired-sidebar
  :ensure t
  :hook
  (dired-sidebar-mode-hook . hide-mode-line-mode)
  (dired-sidebar-mode-hook . hl-line-mode)
  (dired-sidebar-mode-hook . variable-pitch-mode)
  (dired-sidebar-mode-hook . hide-cursor-mode)
  :bind
  (:map leader-map ("n" . dired-sidebar-toggle-sidebar)))

Subtree

Display subtrees in dired view.

(use-package dired-subtree
  :ensure t
  :init
  (setq dired-subtree-use-backgrounds nil)
  (setq dired-subtree-line-prefix "     "))

Stripes

Striped dired buffers.

(use-package stripe-buffer
  :ensure t
  :commands (stripe-buffer-mode)
  :functions (stripe-buffer-maybe-enable-for-dired)
  :hook
  (dired-after-readin-hook . stripe-buffer-maybe-enable-for-dired)
  :config
  (defun stripe-buffer-maybe-enable-for-dired ()
    (unless (derived-mode-p 'dired-sidebar-mode)
      (stripe-buffer-mode 1))))

Icons

(use-package all-the-icons-dired
  :ensure t
  :hook
  (dired-mode-hook . all-the-icons-dired-mode))

Git

(use-package dired-git-info
  :ensure t
  :bind
  (:map dired-mode-map (")" . dired-git-info-mode)))

Isearch

(use-package isearch
  :init
  (setq isearch-lazy-count t))

Occur

(use-package replace
  :bind
  (:map occur-mode-map ("C-c '" . occur-edit-mode)))

(use-package noccur
  :ensure t
  :bind
  (:map goto-map ("O" . noccur-project)))

Packages

avy

Jump to …

(use-package avy
  :ensure t
  :bind
  (:map goto-map ("C" . avy-goto-char-in-line)))

bookmark

Keep track of bookmarks

(use-package bookmark
  :init
  (setq bookmark-save-flag 1))

browse-url

URL handling.

(use-package browse-url
  :bind
  (:map goto-map
        ("u" . browse-url-at-point)
        ("U" . browse-url)))

deadgrep

(use-package deadgrep
  :ensure t
  :bind
  ((:map search-map ("G" . deadgrep))
   (:map deadgrep-mode-map ("C-c '" . deadgrep-edit-mode))
   (:map deadgrep-edit-mode-map ("C-c C-c" . deadgrep-mode))))

find-file

(use-package find-file
  :init
  (setq-default ff-quiet-mode t)
  (put 'ff-search-directories
       'safe-local-variable
       (lambda (x) (cl-every #'stringp x))))

find-file-rg

Find files via rg --files.

(use-package find-file-rg
  :ensure t
  :bind
  ("C-c f" . find-file-rg))

goto-last-change

Move point through buffer-undo-list positions.

(use-package goto-chg
  :ensure t
  :bind
  ((:map goto-map ("SPC" . goto-last-change))
   (:repeat-map goto-chg-repeat-map
                ("SPC" . goto-last-change)
                ("[" . goto-last-change)
                ("]" . goto-last-change-reverse))))

link-hint

Hint mode for links.

(use-package link-hint
  :ensure t
  :bind
  (:map goto-map
        ("l" . link-hint-open-link)
        ("L" . link-hint-copy-link)))

recentf

Keep track of recently opened files.

(use-package recentf
  :defer 1
  :init
  (setq recentf-exclude
        (list "/tmp/"                        ; Temp-files
              "/dev/shm"                     ; Potential secrets
              "/ssh:"                        ; Files over SSH
              "/nix/store"                   ; Files in Nix store
              "/TAGS$"                       ; Tag files
              "^/\\.git/.+$"                 ; Git contents
              "\\.?ido\\.last$"
              "\\.revive$"
              "^/var/folders/.+$"
              (concat "^" cache-dir ".+$")
              (concat "^" data-dir ".+$")))
  (setq recentf-filename-handlers '(abbreviate-file-name))
  (setq recentf-max-menu-items 0)
  (setq recentf-max-saved-items 300)
  (setq recentf-auto-cleanup 'never)
  :config
  (quiet! (recentf-mode 1)))

saveplace

Keep track of last point place to resume editing in the same file.

(use-package saveplace
  :defer 2
  :config
  (save-place-mode 1))

Project

Retrieve project list via ghq.

(use-package project
  :commands
  (project-read-project-list-from-ghq)
  :config
  (defun project-read-project-list-from-ghq ()
    "Initialize `project--list' using contents of command ghq output."
    (interactive)
    (with-temp-buffer
      (call-process "ghq" nil t nil "list" "--full-path")
      (goto-char (point-min))
      (while (not (eobp))
        (cl-pushnew
         (list (buffer-substring-no-properties (line-beginning-position) (line-end-position)))
         project--list
         :test #'equal)
        (forward-line 1))))

  (advice-add 'project--read-project-list :after #'project-read-project-list-from-ghq))

Development

Reduce scroll margin.

(defun prog-scroll-margin-setup ()
  "Setup `scroll-margin' for `prog-mode'."
  (setq-local scroll-margin 3))
(add-hook 'prog-mode-hook #'prog-scroll-margin-setup)

Compilation

Kill compilation process before starting another and save all buffers on compile. Also there is compile-on-save-mode that will compile when files are saved, compilation buffer will only be displayed on error.

(use-package compile
  :functions
  (compilation-find-buffer
   compilation-finish-handle-buffer-display
   recompile)
  :bind
  (:map local-leader-map
        ("a" . compile-on-save-mode)
        ("c" . recompile)
        ("C" . compile))
  :preface
  (define-minor-mode compile-on-save-mode
    "Minor mode to automatically call `recompile' whenever the
current buffer is saved. When there is ongoing compilation,
nothing happens."
    :lighter " CoS"
    (if compile-on-save-mode
        (progn  (make-local-variable 'after-save-hook)
                (add-hook 'after-save-hook 'compile-on-save-start nil t))
      (remove-hook 'after-save-hook 'compile-on-save-start t)))

  (make-variable-buffer-local 'compile-command)
  :init
  (setq compilation-always-kill t)
  (setq compilation-ask-about-save nil)
  (setq compilation-scroll-output t)

  (put 'compile-command 'safe-local-variable 'stringp)
  :config
  (defun compile-on-save-start ()
    (let ((compile-buffer (compilation-find-buffer)))
      (unless (get-buffer-process compile-buffer)
        (let ((display-buffer-alist '(("^*compilation*" . (display-buffer-no-window)))))
          (recompile)))))

  (defun compilation-finish-handle-buffer-display (buffer outstr)
    "Display failed compilation buffer or burry finished ones."
    (let ((compilation-window (get-buffer-window buffer)))
      (cond
       ;; If compilation failed and compilation buffer is not visible,
       ((and (not (string-match "finished" outstr))
             (not compilation-window))
        ;; display that buffer.
        (display-buffer (compilation-find-buffer)))
       ;; If compilation succeeded and compilation buffer is visible,
       ((and (string-match "finished" outstr)
             compilation-window)
        ;; bury that buffer.
        (with-selected-window compilation-window
          (bury-buffer))))))

  (cl-pushnew #'compilation-finish-handle-buffer-display compilation-finish-functions :test #'equal))

ANSI escape

(use-package ansi-color
  :hook
  (compilation-filter-hook . ansi-color-compilation-filter))

Containers

Docker

(use-package docker
  :ensure t
  :bind
  (:map leader-map
        ("d" . docker)
        ("c" . docker-compose))
  :init
  (setq docker-command "podman"))

Files

Support for Docker related files.

(use-package dockerfile-ts-mode
  :mode
  "Dockerfile\\'"
  "\\.dockerfile\\'")

Kubernetes

(use-package kubernetes :ensure t)

Coverage

(use-package cov
  :ensure t
  :commands
  (cov-mode
   cov-mode-toggle)
  :bind
  (:map prog-mode-map ("C-. v" . cov-mode-toggle))
  :init
  (setq cov-coverage-mode t)
  :config
  (defun cov-mode-toggle ()
    "Turn on `cov-mode'."
    (interactive)
    (require 'cov)
    (if (bound-and-true-p cov-mode)
        (cov-mode 0)
      (unless cov-lcov-file-name
        (setq cov-lcov-file-name (expand-file-name "lcov.info" (project-root (project-current)))))
      (cov-mode 1))))

Docs

DevDocs

Lookup documentation via DevDocs.

(use-package devdocs
  :ensure t
  :bind
  (:map goto-map ("K" . devdocs-lookup)))

Folding

Code folding.

(use-package hideshow
  :functions
  (hs-fold-overlay-ellipsis)
  :hook
  (prog-mode-hook . hs-minor-mode)
  :bind
  (:map leader-map :prefix-map hs-prefix-map :prefix "z"
        ("c" . hs-hide-block)
        ("o" . hs-show-block)
        ("C" . hs-hide-all)
        ("O" . hs-show-all)
        ("l" . hs-hide-level)
        ("z" . hs-toggle-hiding)
        ("<tab>" . hs-toggle-hiding))
  :init
  (setq hs-hide-comments-when-hiding-all nil)
  (setq hs-allow-nesting t)
  (setq hs-set-up-overlay #'hs-fold-overlay-ellipsis)
  :config
  (defun hs-fold-overlay-ellipsis (ov)
    (when (eq 'code (overlay-get ov 'hs))
      (overlay-put
       ov 'display (propertize "" 'face 'font-lock-comment-face)))))

Formatting

apheleia

Reformat buffer without moving point.

(use-package apheleia
  :ensure t
  :hook
  (prog-mode-hook . apheleia-mode)
  :bind
  (:map local-leader-map ("f" . apheleia-format-buffer))
  :config
  (dolist (formatter '((nix . ("nix" "fmt" "--" "-"))
                       (rufo . ("rufo" "--simple-exit"))))
    (cl-pushnew formatter apheleia-formatters :test #'equal)))

Jump to definition

Jump to definition is really useful and I prefer doing so without TAGS which is pretty much the default for most modes. I am using the excellent package dumb-jump to jump via grep tools e.g. (grep, rx, ag)

Don’t ask about keeping current list of tags tables.

(use-package etags
  :init
  (setq tags-add-tables nil))

xref

(use-package xref
  :commands
  (xref-show-definitions-completing-read)
  :bind
  (:map goto-map ("o" . xref-find-definitions-other-window))
  :config
  (remove-hook 'xref-backend-functions #'etags--xref-backend))

dumb-jump

(use-package dumb-jump
  :ensure t
  :hook
  (xref-backend-functions . dumb-jump-xref-activate)
  :init
  (setq dumb-jump-default-project user-emacs-directory)
  (setq dumb-jump-selector 'completing-read))

REPL

comint

(use-package comint
  :bind
  (:map comint-mode-map ("C-c C-k" . term-char-mode))
  :init
  (setq comint-use-prompt-regexp t))

repl-toggle

(use-package repl-toggle
  :ensure t
  :bind
  (:map local-leader-map ("r" . rtog/toggle-repl))
  :init
  (setq rtog/goto-buffer-fun 'pop-to-buffer)
  (setq rtog/mode-repl-alist
        '((emacs-lisp-mode . ielm)
          (org-mode . ielm))))

Persistent history in comint

(use-package comint
  :functions
  (comint-read-input-ring
   comint-write-input-ring
   comint-history-enable
   comint-history-write-on-exit)
  :config
  (defun comint-history-write-on-exit (process event)
    "Write `comint' history on exit.
Receives PROCESS and EVENT."
    (comint-write-input-ring)
    (let ((buf (process-buffer process)))
      (when (buffer-live-p buf)
        (with-current-buffer buf
          (insert (format "\nProcess %s %s" process event))))))

  (defun comint-history-enable ()
    "Enable `comint' history."
    (let ((process (get-buffer-process (current-buffer))))
      (when process
        (setq comint-input-ring-file-name
              (expand-file-name
               (format "comint-%s-history" (process-name process))
               cache-dir))
        (comint-read-input-ring)
        (set-process-sentinel process #'comint-history-write-on-exit)))))

Syntax checker

Silence next/previous error, by default it produces a message every time.

(advice-add 'next-error :around #'quiet-function-advice)
(advice-add 'previous-error :around #'quiet-function-advice)

flymake

Connect flymake to next-error-function and add some navigation bindings. Disable the legacy diagnostic functions as some of them have bugs and cause instability (mainly the Haskell one).

(use-package flymake
  :hook
  (flymake-mode-hook . flymake-setup-next-error-function)
  :commands
  (flymake-show-diagnostic
   flymake-goto-next-error)
  :bind
  ((:map flymake-mode-map
         ("C-. !" . flymake-show-buffer-diagnostics)
         ("M-] E" . flymake-goto-next-error)
         ("M-[ E" . flymake-goto-prev-error))
   (:map flymake-diagnostics-buffer-mode-map
         ("n" . flymake-diagnostics-next-error)
         ("p" . flymake-diagnostics-prev-error)
         ("j" . flymake-diagnostics-next-error)
         ("k" . flymake-diagnostics-prev-error)
         ("TAB" . flymake-show-diagnostic))
   (:repeat-map flymake-mode-repeat-map
               ("e" . flymake-goto-next-error)
               ("E" . flymake-goto-prev-error)
               ("[" . flymake-goto-prev-error)
               ("]" . flymake-goto-next-error)))
  :config
  (defun flymake-setup-next-error-function ()
    (setq next-error-function 'flymake-next-error-compat))

  (defun flymake-next-error-compat (&optional n _)
    (flymake-goto-next-error n))

  (defun flymake-diagnostics-next-error ()
    (interactive)
    (forward-line)
    (when (eobp) (forward-line -1))
    (flymake-show-diagnostic (point)))

  (defun flymake-diagnostics-prev-error ()
    (interactive)
    (forward-line -1)
    (flymake-show-diagnostic (point))))

(use-package flymake-proc
  :config
  (setq flymake-proc-ignored-file-name-regexps '("\\.l?hs\\'"))
  (remove-hook 'flymake-diagnostic-functions 'flymake-proc-legacy-flymake))

Version control

(setq vc-follow-symlinks t)
(setq vc-make-backup-files nil)

browse-at-remote

Open link to files in the web UI connected to a repository.

(use-package browse-at-remote
  :ensure t
  :bind
  (:map vc-prefix-map ("SPC" . browse-at-remote-kill)))
(use-package smerge-mode
  :bind
  (:repeat-map smerge-repeat-map
               ("[" . smerge-prev)
               ("]" . smerge-next)
               ("n" . smerge-next)
               ("p" . smerge-prev)

               ("RET" . smerge-keep-current)
               ("a" . smerge-keep-all)
               ("b" . smerge-keep-base)
               ("l" . smerge-keep-lower)
               ("u" . smerge-keep-upper)

               ("E" . smerge-ediff)
               ("r" . smerge-resolve)
               ("R" . smerge-refine))
  :init
  (setq smerge-command-prefix (kbd "C-x c"))
  (keymap-set toggle-map "m" '("Merging" . smerge-mode)))

diff

(use-package diff
  :init
  (setq diff-font-lock-prettify t))

ediff

  • Split horizontally
  • Use existing frame instead of creating a new one
  • Add a third resolution option, copy both A and B to C
(use-package ediff
  :commands
  (ediff-copy-both-to-C)
  :preface
  (autoload 'ediff-copy-diff "ediff-util")
  (autoload 'ediff-get-region-contents "ediff-util")
  (autoload 'ediff-setup-windows-plain "ediff-wind")
  :hook
  (ediff-quit-hook . winner-undo)
  (ediff-keymap-setup-hook . init-ediff-keys)
  :init
  (setq ediff-diff-options "-w")
  (setq ediff-merge-split-window-function #'split-window-horizontally)
  (setq ediff-split-window-function #'split-window-horizontally)
  (setq ediff-window-setup-function #'ediff-setup-windows-plain)
  :config
  (defun ediff-copy-both-to-C ()
    "Copy change from both A and B to C."
    (interactive)
    (ediff-copy-diff
     ediff-current-difference nil 'C nil
     (concat
      (ediff-get-region-contents ediff-current-difference 'A ediff-control-buffer)
      (ediff-get-region-contents ediff-current-difference 'B ediff-control-buffer))))

  (defun init-ediff-keys ()
    "Setup keybindings for `ediff-mode'."
    (keymap-set ediff-mode-map "d" '("Copy both to C" . ediff-copy-both-to-C))
    (keymap-set ediff-mode-map "j" '("Next difference" . ediff-next-difference))
    (keymap-set ediff-mode-map "k" '("Previous difference" . ediff-previous-difference))))

diff-hl

Diff indicators in fringe

(use-package diff-hl
  :ensure t
  :defer 2
  :commands
  (global-diff-hl-mode)
  :preface
  (autoload 'diff-hl-flydiff-mode "diff-hl-flydiff" nil t)
  (autoload 'diff-hl-dired-mode "diff-hl-dired" nil t)
  :hook
  (dired-mode-hook . diff-hl-dired-mode)
  (magit-post-refresh-hook . diff-hl-magit-post-refresh)
  :init
  (setq diff-hl-ask-before-revert-hunk nil)
  (setq diff-hl-update-async t)
  :config
  (global-diff-hl-mode 1)
  (diff-hl-flydiff-mode 1))

magit

Enhanced git related views and commands.

(use-package magit
  :ensure t
  :defer 2
  :functions
  (magit-process-ask-create-pull-request)
  :preface
  (autoload 'magit-show-commit "magit-diff" nil t)
  :hook
  (git-commit-mode-hook . git-commit-set-fill-column)
  :bind
  ("C-x g" . magit)
  :init
  (setq magit-log-buffer-file-locked t)
  (setq magit-refs-show-commit-count 'all)
  (setq magit-save-repository-buffers 'dontask)
  (setq magit-process-prompt-functions #'magit-process-ask-create-pull-request)
  :config
  (defun git-commit-set-fill-column ()
    "Set `fill-column' for git commit."
    (setq fill-column 72))

  (defvar magit-process-create-pull-request-regexp
    "remote: Create pull request for.*\nremote: +\\(?1:[^ ]+\\)[^\n]*"
    "Regular expression detecting PR.")

  (defun magit-process-ask-create-pull-request (_process string)
    "Detect pull request STRING and ask to create PR."
    (when (string-match magit-process-create-pull-request-regexp string)
      (let ((url (match-string 1 string))
            (inhibit-message t))
        (if (y-or-n-p "Create PR? ")
            (browse-url (url-encode-url url))))))

  ;; Unset pager as it is not supported properly inside emacs.
  (setenv "GIT_PAGER" ""))

Packages

envrc

Project-specific environment variables via direnv.

(use-package envrc
  :ensure t
  :if (executable-find "direnv")
  :defer 1
  :commands
  (envrc-global-mode)
  :bind
  (:map envrc-mode-map ("C-c e" . envrc-command-map))
  :config
  (envrc-global-mode 1))

eglot

Generic Language Server Protocol integration via eglot.

(use-package eglot
  :defer 3
  :bind
  ((:map eglot-mode-map ("C-. C-." . eglot-code-actions))
   (:map eglot-mode-map :prefix-map eglot-prefix-map :prefix "C-. e"
         ("a" . eglot-code-actions)
         ("f" . eglot-format)
         ("r" . eglot-rename)
         ("q" . eglot-reconnect)
         ("Q" . eglot-shutdown)))
  :init
  (setq eglot-autoshutdown t)
  (setq eglot-confirm-server-edits nil)
  (setq eglot-sync-connect nil)
  :config
  (cl-pushnew '((elixir-mode elixir-ts-mode heex-ts-mode) . ("elixir-ls"))
              eglot-server-programs
              :test #'equal))

hl-todo

Highlight TODO inside comments and strings.

(use-package hl-todo
  :ensure t
  :hook
  (prog-mode-hook . hl-todo-mode)
  :bind
  (:repeat-map hl-todo-repeat-map
               ("t" . hl-todo-next)
               ("T" . hl-todo-previous)
               ("[" . hl-todo-previous)
               ("]" . hl-todo-next))
  :init
  (keymap-set next-map "t" '("Todo" . hl-todo-next))
  (keymap-set prev-map "t" '("Todo" . hl-todo-previous)))

idle-highlight

Highlight symbol at point on idle.

(use-package idle-highlight-mode
  :ensure t
  :hook
  (prog-mode-hook . idle-highlight-mode)
  :init
  (setq idle-highlight-exclude-point t))

imenu-anywhere

Jump to document locations in current buffer

(use-package imenu-anywhere
  :ensure t
  :bind
  (:map search-map
        ("i" . imenu)
        ("I" . imenu-anywhere)))

imenu-extra

Easily add document locations via regular expressions.

(use-package imenu-extra
  :ensure t
  :functions (imenu-extra-auto-setup))

imenu-list

Document locations in a sidebar.

(use-package imenu-list
  :ensure t
  :hook
  (imenu-list-major-mode-hook . hide-mode-line-mode)
  (imenu-list-major-mode-hook . hide-cursor-mode)
  :bind
  (:map leader-map ("i" . imenu-list-smart-toggle)))

ws-butler

Delete trailing white-space before save, but only for edited lines.

(use-package ws-butler
  :ensure t
  :commands
  (ws-butler-mode)
  :hook
  ((prog-mode-hook
    text-mode-hook) . ws-butler-mode)
  :init
  (setq ws-butler-convert-leading-tabs-or-spaces t))

Appearance

Highlight delimiters

Visually separate delimiter pairs.

(use-package rainbow-delimiters
  :ensure t
  :hook
  ((clojure-mode-hook
    emacs-lisp-mode-hook
    ielm-mode-hook
    lisp-mode-hook
    racket-mode-hook) . rainbow-delimiters-mode)
  :init
  (setq rainbow-delimiters-max-face-count 3))

Highlight identifiers

Highlight source code identifiers based on their name.

(use-package color-identifiers-mode :ensure t)

Ligatures

(use-package ligature
  :ensure t
  :commands
  (ligature-set-ligatures)
  :hook
  (prog-mode-hook . ligature-mode)
  :config
  (ligature-set-ligatures
   'prog-mode
   '("-<<" "-<" "-<-" "<--" "<---" "<<-" "<-" "->" "->>" "-->" "--->" "->-" ">-" ">>-" "<->" "<-->" "<--->" "<---->" "<!--"
     "=<<" "=<" "=<=" "<==" "<===" "<<=" "<=" "=>" "=>>" "==>" "===>" "=>=" ">=" ">>=" "<=>" "<==>" "<===>" "<====>" "<!---"
     "<------" "------>" "<=====>" "<~~" "<~" "~>" "~~>" "::" ":::" "\\/" "/\\" "==" "!=" "/=" "~=" "<>" "===" "!==" "=/=" "=!="
     ":=" ":-" ":+" "<*" "<*>" "*>" "<|" "<|>" "|>" "<." "<.>" ".>" "+:" "-:" "=:" "<******>" "(*" "*)" "++" "+++" "|-" "-|"
     "&&" "||")))

(use-package prog-mode
  :init
  (setq prettify-symbols-unprettify-at-point t))

Major modes

emacs-lisp

(use-package elisp-mode
  :hook
  (emacs-lisp-mode-hook . flymake-mode)
  (emacs-lisp-mode-hook . outline-minor-mode)
  :bind
  (:map emacs-lisp-mode-map
        ("C-. c" . emacs-lisp-byte-compile)
        ("C-. C" . emacs-lisp-byte-compile-and-load)
        ("C-. d" . checkdoc)
        ("C-. l" . emacs-lisp-load-buffer-file)
        ("C-. L" . eval-buffer)
        ("C-. p" . package-lint-current-buffer)
        ("C-. t" . ert))
  :config
  (defun emacs-lisp-load-buffer-file ()
    "Load the Lisp file associated with current buffer."
    (interactive)
    (load-file (buffer-file-name))))

(custom-set-variables
 '(ad-redefinition-action 'accept)
 '(apropos-do-all t)
 '(enable-local-eval 'maybe)
 '(enable-local-variables :safe))

Specific safe local code can be specified via:

  • safe-local-variable-values
  • safe-local-eval-forms
  • safe-local-eval-function

Packages

package-lint-flymake

(use-package package-lint-flymake
  :ensure t
  :commands (package-lint-flymake-setup)
  :preface
  (autoload 'package-lint--provided-feature "package-lint")
  :hook
  (emacs-lisp-mode-hook . package-lint-flymake-setup-when-package)
  :config
  (defun package-lint-flymake-setup-when-package ()
    "Enable `package-lint-flymake' when buffer seems to be a package."
    (when (package-lint--provided-feature)
      (package-lint-flymake-setup))))

Appearance

Regular expression escapes

Improve readability of escape characters in regular expressions.

(use-package easy-escape
  :ensure t
  :hook
  (emacs-lisp-mode-hook . easy-escape-minor-mode))

erc

(use-package erc
  :init
  (setq erc-hide-list '("JOIN" "PART" "QUIT"))
  (setq erc-prompt-for-password nil))

org

(use-package org
  :defer 5
  :preface
  (autoload 'org-get-outline-path "org-refile" nil t)
  :hook
  (org-mode-hook . auto-fill-mode)
  (org-mode-hook . org-mode-init)
  :bind
  (("C-c a" . org-agenda)
   (:map org-mode-map
         ("C-'" . nil)
         ("C-," . nil)))
  :init
  (setq org-agenda-files
        '("~/org/Personal.org" "~/org/Work.org"))
  (setq org-insert-heading-respect-content t)
  (setq org-log-done 'time)
  (setq org-modules '(ol-info))
  (setq org-special-ctrl-a/e t)

  (setq org-confirm-babel-evaluate nil)
  (setq org-edit-src-content-indentation 0)
  (setq org-src-preserve-indentation nil)
  (setq org-src-tab-acts-natively t)
  (setq org-src-window-setup 'current-window)

  (setq org-startup-truncated nil)

  (setq org-auto-align-tags nil)
  (setq org-tags-column 0)
  (setq org-tag-alist
        '(("@work"  . ?w)
          ("@home"  . ?h)
          ("laptop" . ?l)))

  (setq org-imenu-depth 3)
  :config
  (defun org-mode-init ()
    (setq tab-width 8))

  (dolist (lang '("emacs-lisp" "elisp"))
    (cl-pushnew (cons lang 'lisp-interaction) org-src-lang-modes :test #'equal)))

(use-package ob-plantuml
  :init
  (setq org-plantuml-exec-mode 'plantuml))

Packages

dslide

Presentation mode.

(use-package dslide
  :ensure t
  :functions
  (dslide-stop-restore-modes)
  :hook
  (dslide-start-hook . hide-cursor-mode)
  (dslide-start-hook . global-hide-fringes-mode)
  (dslide-start-hook . hide-mode-line-mode)
  (dslide-stop-hook . dslide-stop-restore-modes)
  :bind
  (:map org-mode-map ("C-. p" . dslide-deck-start))
  :init
  (setq dslide-header nil)
  :config
  (defun dslide-stop-restore-modes ()
    (global-hide-fringes-mode 0)))

org-contrib

Unmaintained add-ons for org-mode, in this configuration org-eldoc is used.

(use-package org-contrib :ensure t)

org-cliplink

Paste links from clipboard and automatically fetch title.

(use-package org-cliplink
  :ensure t
  :bind
  (:map org-mode-map ("C-. l" . org-cliplink)))

org-eldoc

Eldoc support, showing path to current section.

(use-package org-eldoc
  :after eldoc
  :functions
  (org-eldoc-get-breadcrumb-no-properties)
  :hook
  (org-mode-hook . org-eldoc-load)
  :config
  (defun org-eldoc-get-breadcrumb-no-properties (string)
    "Remove properties from STRING."
    (when string (substring-no-properties string)))

  (advice-add 'org-eldoc-get-breadcrumb :filter-return #'org-eldoc-get-breadcrumb-no-properties))

org-limit-image-size

(use-package org-limit-image-size
  :ensure t
  :after org
  :commands
  (org-limit-image-size-activate
   org-limit-image-size-deactivate)
  :init
  (org-limit-image-size-activate)
  (setq org-limit-image-size '(0.48 . 0.8)))

org-noter

Annotate documents with org-mode.

(use-package org-noter :ensure t
  :bind
  (:map leader-map ("o" . org-noter)))

ob-http

(use-package ob-http :ensure t)

Appearance

This sections makes org-mode look more beautiful and appealing.

(use-package org
  :hook
  (org-babel-after-execute-hook . org-redisplay-inline-images)
  :init
  (setq org-fold-catch-invisible-edits 'show-and-error)
  (setq org-fontify-quote-and-verse-blocks t)
  (setq org-hide-emphasis-markers t)
  (setq org-pretty-entities t)
  (setq org-src-fontify-natively t)
  (setq org-startup-with-inline-images t))

(use-package org-modern
  :ensure t
  :hook
  (org-mode-hook . org-modern-mode)
  :init
  (setq org-modern-hide-stars t)
  (setq org-modern-table nil))

(use-package org-appear
  :ensure t
  :hook
  (org-mode-hook . org-appear-mode))

Emphasis

Allow more newlines (1 to 4) for emphasized text, useful when filling long text.

(use-package org
  :preface
  (autoload 'org-set-emph-re "org")
  :config
  (setcar (nthcdr 4 org-emphasis-regexp-components) 4)
  (org-set-emph-re 'org-emphasis-regexp-components org-emphasis-regexp-components))

Headings

(use-package org
  :init
  (setq org-ellipsis "")
  (setq org-fontify-whole-heading-line t)
  (setq org-fontify-todo-headline t)
  (setq org-fontify-done-headline t))

Export

epub

(use-package ox-epub :ensure t)

HTML

(use-package ox-html
  :init
  (setq org-html-postamble nil)
  (setq org-html-validation-link nil))

LaTeX

Disable link colors.

(use-package ox-latex
  :init
  (setq org-latex-hyperref-template
        (mapconcat
         'identity
         '("\\hypersetup{"
           "pdfauthor={%a},"
           "pdftitle={%t},"
           "pdfkeywords={%k},"
           "pdfsubject={%d},"
           "pdfcreator={%c},"
           "pdflang={%L},"
           "pdfborder=0 0 0}")
         "\n")))

Add links in footnotes.

(autoload 'org-export-derived-backend-p "ox")

(defvar org-export-latex-add-link-footnotes t
  "If non-nil links will be added as footnotes if exported to latex.")

(defun org-export-latex-link-footnote (text backend _info)
  "Create a footnote for each link to retain this information for print.
If there is a URL and the export BACKEND is latex, then extract
URL into footnote from TEXT."
  (when (and org-export-latex-add-link-footnotes
             (org-export-derived-backend-p backend 'latex)
             (string-match "\\\\href{\\(.*\\)}{\\(.*\\)}" text))
    (when (cl-some (lambda (type)
                     (string-prefix-p type (match-string 1 text)))
                   '("http" "https" "ftp" "mailto" "doi"))
      (format "%s \\footnote{\\url{%s}} " text (match-string 1 text)))))

(with-eval-after-load 'ox
  (cl-pushnew #'org-export-latex-link-footnote org-export-filter-link-functions :test #'equal))

outline

Display outlines in text like files or use it in conjunction with other major modes via outline-minor-mode.

Packages

outline-minor-faces

Add faces to outline-minor-mode in order to make the headings stand out.

(use-package outline-minor-faces
  :ensure t
  :after outline
  :hook
  (outline-minor-mode-hook . outline-minor-faces-mode))

clojure

(use-package clojure-mode
  :ensure t
  :mode
  "\\.\\(clj\\|dtm\\|edn\\)\\'"
  "\\(?:build\\|profile\\)\\.boot\\'"
  ("\\.cljc\\'" . clojurec-mode)
  ("\\.cljs\\'" . clojurescript-mode)
  :config
  (cl-pushnew '("src/\\([^/]+\\)\\.clj\\'" "test/\\1_test.clj") find-sibling-rules :test #'equal)
  (cl-pushnew '("test/\\([^/]+\\)_test\\.clj\\'" "src/\\1.clj") find-sibling-rules :test #'equal))

Packages

cider

(use-package cider
  :ensure t
  :commands
  (cider-current-repl
   cider-jack-in-clj)
  :hook
  (clojure-mode-hook . cider-mode)
  (cider-mode-hook . cider-auto-test-mode)
  :bind
  ((:map cider-mode-map
         ("C-. R" . cider-jack-in)
         ("C-. c" . cider-ns-refresh)
         ("C-. l" . cider-load-buffer)
         ("C-. t a" . cider-test-run-project-tests)
         ("C-. t n" . cider-test-run-ns-tests)
         ("C-. t t" . cider-test-run-test)
         ("C-. t w" . cider-auto-test-mode)))
  :init
  (setq cider-prompt-for-symbol nil)
  (setq cider-repl-display-help-banner nil)
  (setq cider-repl-history-file (concat data-dir "cider-history"))

  (with-eval-after-load 'popper
    (cl-pushnew 'cider-test-report-mode popper-reference-buffers :test #'equal))
  :config
  (defun clojure-repl ()
    "Open a Clojure REPL."
    (interactive)
    (if-let* ((repl-buffer (cider-current-repl)))
        (pop-to-buffer repl-buffer)
      (cider-jack-in-clj nil)))

  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(clojure-mode . clojure-repl) rtog/mode-repl-alist :test #'equal)))

cobol

(use-package cobol-mode
  :ensure t
  :mode "\\.\\(cob\\|cbl\\|cpy\\)\\'")

crystal

(use-package crystal-mode
  :ensure t
  :mode "\\(?:\\.cr\\)\\'"
  :bind
  ((:map crystal-mode-map
         ("C-. t a" . crystal-spec-all)
         ("C-. t f" . crystal-spec-buffer)
         ("C-. t t" . crystal-spec-line))))

Packages

inf-crystal

(use-package inf-crystal
  :ensure t
  :commands
  (inf-crystal)
  :hook
  (crystal-mode-hook . inf-crystal-minor-mode)
  :config
  (defun crystal-repl ()
    "Open a Crystal REPL."
    (inf-crystal inf-crystal-interpreter))

  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(crystal-mode . crystal-repl) rtog/mode-repl-alist :test #'equal)))

csv

(use-package csv-mode
  :ensure t
  :mode
  "\\.[Cc][Ss][Vv]\\'"
  ("\\.tsv\\'" . tsv-mode)
  :init
  (setq csv-separators '("," "\t" ";")))

d2

(use-package d2-mode
  :ensure t
  :mode "\\.d2\\'"
  :hook
  (d2-mode-hook . d2-mode-set-compile-command)
  (d2-mode-hook . compile-on-save-mode)
  :init
  (setq d2-flags '("--layout" "elk" "--sketch" "--theme" "1"))
  :config
  (defun d2-mode-set-compile-command ()
    "Configure compile command for d2-mode."
    (set (make-local-variable 'compile-command)
         (mapconcat #'shell-quote-argument (append (list d2-location buffer-file-name) d2-flags)
                    " "))))

elixir

(use-package elixir-ts-mode
  :mode
  "\\.elixir\\'"
  "\\.ex\\'"
  "\\.exs\\'"
  :hook
  (elixir-ts-mode-hook . eglot-ensure)
  :init
  (cl-pushnew '("lib/\\([^/]+\\)\\.ex\\'" "test/\\1_test.exs") find-sibling-rules :test #'equal)
  (cl-pushnew '("test/\\([^/]+\\)_test\\.exs\\'" "lib/\\1.ex") find-sibling-rules :test #'equal))

(cl-pushnew '(elixir-mode . elixir-ts-mode) major-mode-remap-alist :test #'equal)

elm

Elm and elm-mode seems unmaintained at the moment, so I disable this.

(use-package elm-mode
  :ensure t
  :mode "\\.elm\\'"
  :bind
  (:map elm-mode-map ("C-. t" . elm-test-project))
  :init
  (setq elm-format-on-save t)
  (setq elm-package-json "elm.json")
  (setq elm-tags-exclude-elm-stuff nil)
  (setq elm-tags-on-save t)
  :config
  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(elm-mode . elm-repl-load) rtog/mode-repl-alist :test #'equal)))

epub

Packages

nov

(use-package nov
  :ensure t
  :mode
  ("\\.epub\\'" . nov-mode)
  :hook
  (nov-mode-hook . init-nov-delayed-render)
  (nov-mode-hook . hide-fringes-mode)
  :init
  (setq nov-save-place-file (concat data-dir "nov-places"))
  :config
  (defun init-nov-delayed-render ()
    (run-with-idle-timer 0.2 nil 'nov-render-document)))

erlang

(use-package erlang
  :ensure t
  :mode
  ("\\.\\(e\\|h\\|x\\|y\\)rl$" . erlang-mode)
  ("\\.escript" . erlang-mode)
  ("\\.app\\.src$" . erlang-mode)
  ("/ebin/.+\\.app" . erlang-mode)
  :hook
  (erlang-mode-hook . init-erlang-eunit)
  (erlang-mode-hook . init-erlang-flymake)
  :bind
  (:map erlang-mode-map ("M-g k" . erlang-man-function))
  :init
  (cl-pushnew '("src/\\([^/]+\\)\\.erl\\'" "test/\\1_tests.erl") find-sibling-rules :test #'equal)
  (cl-pushnew '("test/\\([^/]+\\)_tests\\.erl\\'" "src/\\1.erl") find-sibling-rules :test #'equal)
  :config
  (defun init-erlang-eunit ()
    "Setup EUnit support for `erlang-mode'."
    (require 'erlang-eunit))

  (defun init-erlang-flymake ()
    "Setup `flymake' support for `erlang-mode'."
    (require 'erlang-flymake)
    (flymake-mode 1))

  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(erlang-mode . erlang-shell-display) rtog/mode-repl-alist :test #'equal)))

(use-package erlang-eunit
  :bind
  (:map erlang-mode-map
        ("C-. t t" . erlang-eunit-compile-and-run-current-test)
        ("C-. t m" . erlang-eunit-compile-and-run-module-tests)))

git

Packages

git-modes

(use-package git-modes
  :ensure t
  :mode
  ("/\\.dockerignore\\'" . gitignore-mode))

go

(use-package go-ts-mode
  :mode
  "\\.go\\'"
  ("go\\.mod\\'" . go-mod-ts-mode)
  :hook
  (go-ts-mode-hook . eglot-ensure)
  (go-ts-mode-hook . go-ts-mode-set-devdocs)
  :preface
  (define-repl go-repl "Go REPL" "gore")
  :config
  (defun go-ts-mode-set-devdocs ()
    (setq-local devdocs-current-docs '("go")))

  (cl-pushnew '(go-mode . go-ts-mode) major-mode-remap-alist :test #'equal)

  (with-eval-after-load 'apheleia
    (cl-pushnew '(go-ts-mode . goimports) apheleia-mode-alist :test #'equal))

  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(go-ts-mode . go-repl) rtog/mode-repl-alist :test #'equal))

  (cl-pushnew '("\\([^/]+\\)\\.go\\'" "\\1_test.go") find-sibling-rules :test #'equal)
  (cl-pushnew '("\\([^/]+\\)_test\\.go\\'" "\\1.go") find-sibling-rules :test #'equal))

Packages

gotest

(use-package gotest
  :ensure t
  :bind
  (:map go-ts-mode-map
        ("C-. l" . go-run)
        ("C-. t a" . go-test-current-project)
        ("C-. t f" . go-test-current-file)
        ("C-. t t" . go-test-current-test)))

groovy

(use-package groovy-mode
  :ensure t
  :mode
  "\\.g\\(?:ant\\|roovy\\|radle\\)\\'"
  "Jenkinsfile")

fish

(use-package fish-mode
  :ensure t
  :mode
  "\\.fish\\'"
  "/fish_funced\\..*\\'")

haskell

(use-package haskell-mode
  :ensure t
  :preface
  (eval-when-compile
    (require 'haskell-commands))
  :mode
  "\\.[gh]s\\'"
  "\\.hsig\\'"
  "\\.hsc\\'"
  ("\\.cabal\\'\\|/cabal\\.project\\|/\\.cabal/config\\'" . haskell-cabal-mode)
  ("\\.l[gh]s\\'" . haskell-literate-mode)
  :hook
  (haskell-mode-hook . eglot-ensure)
  :preface
  (autoload 'interactive-haskell-mode-map "haskell" nil t)
  :bind
  (:map haskell-mode-map
        ("C-. r" . haskell-interactive-switch)
        ("C-. R" . haskell-session-change-target))
  :init
  (setq haskell-font-lock-symbols t)
  (setq haskell-process-auto-import-loaded-modules t)
  (setq haskell-process-log t)
  (setq haskell-process-show-debug-tips nil)
  (setq haskell-process-use-presentation-mode t)
  (setq haskell-stylish-on-save t)
  (setq haskell-mode-stylish-haskell-path "brittany")

  ;; Allow configuring project local cabal repl commands.
  (put 'haskell-process-args-cabal-repl
       'safe-local-variable
       (lambda (x) (cl-every #'stringp x))))

(use-package haskell
  :hook
  (haskell-mode-hook . interactive-haskell-mode)
  :bind
  (:map interactive-haskell-mode-map ("M-." . nil)))

java

(use-package java-ts-mode
  :preface
  (cl-pushnew '(java-mode . java-ts-mode) major-mode-remap-alist :test #'equal)
  :hook
  (java-ts-mode-hook . eglot-ensure))

Packages

gradle-mode

(use-package gradle-mode
  :ensure t
  :hook
  ((java-mode-hook java-ts-mode-hook kotlin-mode-hook) . gradle-mode)
  :bind
  (:map gradle-mode-map ("C-. t" . gradle-test))
  :init
  (setq gradle-executable-path "gradle"))

js

(use-package js
  :mode
  ("\\.js[mx]?\\'" . js-ts-mode)
  ("\\.har\\'" . js-ts-mode)
  :hook
  (js-ts-mode-hook . eglot-ensure)
  :init
  (cl-pushnew '("\\([^/]+\\)\\.js\\'" "\\1.spec.js") find-sibling-rules :test #'equal)
  (cl-pushnew '("\\([^/]+\\).spec\\.js\\'" "\\1.js") find-sibling-rules :test #'equal))

(cl-pushnew '(js-mode . js-ts-mode) major-mode-remap-alist :test #'equal)

json

(use-package json-ts-mode
  :mode
  "\\(?:\\(?:\\.json\\|\\.jsonld\\|\\.babelrc\\|\\.bowerrc\\|composer\\.lock\\)\\'\\)")

(cl-pushnew '(json-mode . json-ts-mode) major-mode-remap-alist :test #'equal)

Packages

json-navigator

(use-package json-navigator
  :ensure t
  :bind
  (:map json-ts-mode-map ("C-. n" . json-navigator-navigate-region)))

kotlin

(use-package kotlin-mode :ensure t)

lisp

(use-package inf-lisp
  :init
  (setq inferior-lisp-program "sbcl"))

Packages

sly

(use-package sly
  :ensure t
  :bind
  (:map sly-mode-map
        ("M-g k" . sly-describe-symbol)
        ("C-. o" . sly)))

(use-package sly-quicklisp :ensure t)

lua

(use-package lua-ts-mode
  :mode "\\.lua\\'"
  :config
  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(lua-ts-mode . lua-ts-inferior-lua) rtog/mode-repl-alist :test #'equal)))

markdown

(use-package markdown-mode
  :ensure t
  :mode
  "\\.markdown\\'"
  "\\.md\\'"
  :hook
  (markdown-mode-hook . markdown-display-inline-images)
  :bind
  (:map markdown-mode-map
        ("C-. i" . markdown-toggle-inline-images)
        ("C-. v" . markdown-toggle-markup-hiding))
  :init
  (setq markdown-enable-wiki-links t)
  (setq markdown-fontify-code-blocks-natively t)
  (setq markdown-header-scaling t)
  (setq markdown-hide-markup t)
  (setq markdown-italic-underscore t)
  (setq markdown-blockquote-display-char '("" ">"))
  (setq markdown-list-item-bullets '("" ""))
  (setq markdown-make-gfm-checkboxes-buttons t)
  (setq markdown-max-image-size '(1024 . 1024)))

Packages

edit-indirect

Edit regions in separate buffers.

(use-package edit-indirect :ensure t)

markdown-toc

Generate Table of Contents.

(use-package markdown-toc :ensure t)

Appearance

Variable pitch

Use variable-pitch font but still make sure everything aligns.

(font-lock-add-keywords
 'markdown-mode
 '(("^[[:space:]-*+>]+" 0 'fixed-pitch append))
 'append)

Bullet lists

Pretty check-boxes

(font-lock-add-keywords
 'markdown-mode
 '(("^ *[-*+] \\[\\([Xx]\\)\\] "
    (0 (prog1 () (compose-region (match-beginning 1) (match-end 1) ""))))))

mermaid

(use-package mermaid-mode
  :ensure t
  :mode "\\.\\(mmd|mermaid\\)\\'"
  :hook
  (mermaid-mode-hook . mermaid-mode-set-compile-command)
  (mermaid-mode-hook . compile-on-save-mode)
  :init
  (setq mermaid-flags "--backgroundColor transparent")
  :config
  (defun mermaid-mode-set-compile-command ()
    "Configure compile command for mermaid-mode."
    (set (make-local-variable 'compile-command)
         (concat (mapconcat #'shell-quote-argument
                            (list
                             mermaid-mmdc-location
                             "-i" buffer-file-name
                             "-o" (concat (file-name-sans-extension buffer-file-name) mermaid-output-format)) " ")
                 " "
                 mermaid-flags))))

message

(use-package message
  :init
  (setq message-expand-name-standard-ui t))

nginx

(use-package nginx-mode
  :ensure t
  :mode
  "/nginx/.+\\.conf\\'"
  "nginx\\.conf\\'")

nix

(use-package nix-ts-mode
  :ensure t
  :mode "\\.nix\\'"
  :hook
  (nix-ts-mode-hook . eglot-ensure)
  (nix-ts-mode-hook . nix-ts-mode-set-devdocs)
  :init
  (with-eval-after-load 'apheleia
    (cl-pushnew '(nix-ts-mode . nix) apheleia-mode-alist :test #'equal))
  (with-eval-after-load 'grugru
    (grugru-define-on-major-mode 'nix-mode 'symbol '("true" "false")))
  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(nix-ts-mode . nix-repl) rtog/mode-repl-alist :test #'equal))
  :config
  (defun nix-ts-mode-set-devdocs ()
    (setq-local devdocs-current-docs '("nix"))))

(use-package nix-mode
  :ensure t
  :commands
  (nix-repl)
  :bind
  (:map leader-map ("f" . nix-flake)))

nxml

(use-package nxml-mode
  :mode "\\.plist\\'"
  :init
  (setq nxml-slash-auto-complete-flag t))

ocaml

(use-package caml :ensure t)

(use-package tuareg
  :ensure t
  :bind
  ((:map tuareg-mode-map
         ("C-x C-e" . tuareg-eval-phrase)
         ("C-. r" . run-ocaml))))

pdf

Packages

pdf-tools

(use-package pdf-tools
  :ensure t
  :mode ("\\.pdf\\'" . pdf-view-mode))

plantuml

(use-package plantuml-mode
  :ensure t
  :mode "\\.\\(plantuml\\|pum\\|plu\\)\\'"
  :init
  (setq plantuml-default-exec-mode 'executable))

python

(use-package python
  :hook
  (python-ts-mode-hook . eglot-ensure)
  (python-ts-mode-hook . indent-bars-mode)
  :bind
  (:map python-ts-mode-map ("C-. r" . run-python))
  :init
  (cl-pushnew '("\\([^/]+\\)\\.py\\'" "\\1_test.py") find-sibling-rules :test #'equal)
  (cl-pushnew '("\\([^/]+\\)_test\\.py\\'" "\\1.py") find-sibling-rules :test #'equal)
  (cl-pushnew '("src/\\(\\(?:[s][r][^c]\\|[^s][^r][^c]\\|$\\)./\\)+\\([^/]+\\)\\.py\\'" "tests/\\1test_\\2.py") find-sibling-rules :test #'equal)
  (cl-pushnew '("tests/\\(.+/\\)test_\\([^/]+\\)\\.py\\'" "src/\\1\\2.py") find-sibling-rules :test #'equal)
  :config
  (put 'python-shell-interpreter 'safe-local-variable #'(lambda (x) (member x '("python" "ipython")))))

(cl-pushnew '(python-mode . python-ts-mode) major-mode-remap-alist :test #'equal)

Packages

python-test

(use-package python-test
  :ensure t
  :bind
  (:map python-ts-mode-map
        ("C-. t a" . python-test-project)
        ("C-. t f" . python-test-file)
        ("C-. t t" . python-test-function))
  :init
  (setq python-test-backend 'pytest)
  :config
  (setq python-test-project-root-files
        (append '("README.md") python-test-project-root-files)))

racket

(use-package racket-mode
  :ensure t
  :mode "\\.rkt[dl]?\\'"
  :bind
  (:map racket-mode-map
        ("M-g k" . racket-doc)
        ("C-. t" . racket-test))
  :config
  (with-eval-after-load 'repl-toggle
    (cl-pushnew '(racket-mode . racket-repl) rtog/mode-repl-alist :test #'equal)))

Packages

flymake-racket

(use-package flymake-racket
  :ensure t
  :hook
  (racket-mode-hook . flymake-racket-add-hook))

rego

Disabled due to currently not working with rego.

(use-package rego-mode :ensure t)

rst

(use-package rst
  :hook
  (rst-mode-hook . auto-fill-mode))

Appearance

Variable pitch

Use variable-pitch font but still make sure everything aligns.

(font-lock-add-keywords
 'rst-mode
 '(("^[[:space:]-*+]+\\(\\[.\\]\\)?" 0 'fixed-pitch append))
 'append)

Bullet lists

Pretty check-boxes as well as bullet lists.

(font-lock-add-keywords
 'rst-mode
 '(("^ *\\([-*+]\\) "
    (0 (prog1 () (compose-region (match-beginning 1) (match-end 1) ""))))
   ("^ *[-*+] \\[\\([Xx]\\)\\] "
    (0 (prog1 () (compose-region (match-beginning 1) (match-end 1) ""))))))

ruby

(use-package ruby-ts-mode
  :mode
  "\\.\\(rbw?\\|ru\\|rake\\|thor\\|jbuilder\\|rabl\\|gemspec\\|podspec\\)\\'"
  "\\(Gem\\|Rake\\|Cap\\|Thor\\|Puppet\\|Berks\\|Brew\\|Vagrant\\|Guard\\|Pod\\)file"
  :hook
  (ruby-ts-mode-hook . eglot-ensure)
  :init
  (setq ruby-align-chained-calls t)

  (with-eval-after-load 'apheleia
    (cl-pushnew '(ruby-ts-mode . rufo) apheleia-mode-alist :test #'equal))

  (cl-pushnew '("\\([^/]+\\)\\.rb\\'" "\\1_test.rb") find-sibling-rules :test #'equal)
  (cl-pushnew '("\\([^/]+\\)_test\\.rb\\'" "\\1.rb") find-sibling-rules :test #'equal)
  :config
  (with-eval-after-load 'hideshow
    (cl-pushnew `(ruby-ts-mode
                  ,(rx (or "def" "class" "module" "do" "{" "[")) ; Block start
                  ,(rx (or "}" "]" "end"))                       ; Block end
                  ,(rx bol
                       (or (+ (zero-or-more blank) "#") "=begin")) ; Comment start
                  ruby-forward-sexp nil)
                hs-special-modes-alist
                :test #'equal)))

Packages

inf-ruby

(use-package inf-ruby
  :ensure t
  :hook
  (ruby-ts-mode-hook . inf-ruby-minor-mode)
  ;; Auto breakpoint
  (compilation-filter-hook . inf-ruby-auto-enter)
  :bind
  (:map ruby-ts-mode-map ("C-. r" . inf-ruby))
  :init
  (setq inf-ruby-default-implementation "pry"))

minitest

(use-package minitest
  :ensure t
  :hook
  (ruby-ts-mode-hook . minitest-enable-appropriate-mode)
  :bind
  (:map minitest-mode-map
        ("C-. t a" . minitest-verify-all)
        ("C-. t f" . minitest-verify)
        ("C-. t t" . minitest-verify-single))
  :init
  (put 'minitest-use-bundler 'safe-local-variable 'booleanp))

rspec-mode

(use-package rspec-mode
  :ensure t
  :hook
  (ruby-ts-mode-hook . rspec-enable-appropriate-mode)
  :bind
  (:map rspec-mode-map
        ("C-. t a" . rspec-verify-all)
        ("C-. t f" . rspec-verify)
        ("C-. t t" . rspec-verify-single))
  :init
  (setq rspec-use-relative-path t)
  (setq rspec-use-opts-file-when-available nil)
  (setq rspec-command-options "--format progress"))

rust

(use-package rust-ts-mode
  :mode "\\.rs\\'"
  :hook
  (rust-ts-mode-hook . eglot-ensure)
  :init
  (with-eval-after-load 'org
    (cl-pushnew '("rust" . rust-ts-mode) org-src-lang-modes :test #'equal)))

scala

(use-package scala-mode
  :ensure t
  :mode "\\.\\(scala\\|sbt\\)\\'"
  :hook
  (scala-mode-hook . init-scala-prettify-symbols)
  :init
  (setq scala-indent:align-parameters t)
  :config
  (defun init-scala-prettify-symbols ()
    (setq prettify-symbols-alist scala-prettify-symbols-alist)
    (prettify-symbols-mode 1)))

sh

(use-package sh-script
  :hook
  (sh-mode-hook . flymake-mode)
  :bind
  (:map sh-mode-map ("M-g k" . man))
  :init
  ;; Use regular indentation for line-continuation
  (setq sh-indent-after-continuation 'always)

  (cl-pushnew '("\\([^/]+\\)\\.sh\\'" "\\1.bats") find-sibling-rules :test #'equal)
  (cl-pushnew '("\\([^/]+\\)\\.bats\\'" "\\1.sh") find-sibling-rules :test #'equal)

  (with-eval-after-load 'apheleia
    (cl-pushnew '(sh-mode . shfmt) apheleia-mode-alist :test #'equal)))

Packages

sql

(use-package sql
  :init
  (setq sql-mysql-options '("--protocol=tcp" "--prompt=" "--disable-pager")))

terraform

(use-package terraform-mode
  :ensure t
  :mode "\\.tf$"
  :hook
  (terraform-mode-hook . terraform-mode-set-devdocs)
  :config
  (defun terraform-mode-set-devdocs ()
    (setq-local devdocs-current-docs '("terraform"))))

typescript

(use-package typescript-ts-mode
  :mode "\\.ts$"
  :hook
  (typescript-ts-mode-hook . eglot-ensure)
  :init
  (cl-pushnew '("\\([^/]+\\)\\.ts\\'" "\\1.test.ts") find-sibling-rules :test #'equal)
  (cl-pushnew '("\\([^/]+\\).test\\.ts\\'" "\\1.ts") find-sibling-rules :test #'equal))

web

Packages

cakecrumbs

Display current path for HTML/XML/CSS.

(use-package cakecrumbs
  :ensure t
  :defer 3
  :commands
  (cakecrumbs-auto-setup)
  :config
  (cakecrumbs-auto-setup))

web-mode

(use-package web-mode
  :ensure t
  :mode "\\.\\(phtml\\|php\\|[agj]sp\\|as[cp]x\\|erb\\|djhtml\\|html?\\|hbs\\|ejs\\|jade\\|swig\\|tmpl\\)\\'"
  :init
  (setq web-mode-enable-html-entities-fontification t)
  ;; Highlight enclosing tags of the element under cursor
  (setq web-mode-enable-current-element-highlight t)
  ;; No extra indentation for blocks.
  (setq web-mode-script-padding 0)
  (setq web-mode-style-padding 0))

yaml

(use-package yaml-ts-mode
  :mode "\\.\\(e?ya?\\|ra\\)ml\\'"
  :hook
  (yaml-ts-mode-hook . apheleia-mode)
  (yaml-ts-mode-hook . indent-bars-mode))

Tools

Focus

Dim out the surrounding text except the current focused paragraph or expression.

(use-package focus :ensure t)

Indentation guides

(use-package indent-bars
  :ensure t
  :init
  (setq indent-bars-width-frac 0.2))

Pomodoro

(use-package pomm
  :ensure t
  :commands (pomm pomm-third-time)
  :bind
  (:map leader-map ("p" . pomm-third-time)))

Session

Support for restoring previous session on Emacs restart. This adds a few tweaks that makes it really useful.

  • Support for persistent undo history via buffer-undo-list.
  • Ignore saving of gz files as it seems not to properly load those.
  • Restore no buffers to begin with to avoid slow starts with huge sessions.
(use-package desktop
  :hook
  (server-after-make-frame-hook . desktop-read)
  (server-after-make-frame-hook . desktop-save-mode)
  :init
  (setq desktop-save t)
  (setq desktop-files-not-to-save "\\(\\`/[^/:]*:\\|(ftp)\\|\\.gz\\'\\)")

  (setq desktop-load-locked-desktop t)
  (setq desktop-restore-eager 0)
  (setq desktop-restore-frames nil)

  (desktop-save-mode 1)
  :config
  (dolist (var '(compile-history
                 extended-command-history
                 grep-history
                 minibuffer-history
                 query-replace-history
                 read-expression-history
                 shell-command-history))
    (cl-pushnew var desktop-globals-to-save :test #'equal))
  (dolist (var '(buffer-undo-list comint-input-ring))
    (cl-pushnew var desktop-locals-to-save :test #'equal)))

Speed reading

(use-package spray
  :ensure t
  :init
  (setq spray-height 500)
  (setq spray-margin-left 2)

  (keymap-set toggle-map "s" '("Speed reading" . spray-mode))
  :config
  (setq spray-unsupported-minor-modes
        (append '(beacon-mode centered-window-mode visual-fill-column-mode)
                spray-unsupported-minor-modes)))

Spell checking

(use-package jinx
  :ensure t
  :hook
  ((prog-mode-hook
    text-mode-hook) . jinx-mode)
  :bind
  (([remap ispell-word] . jinx-correct)
   (:repeat-map jinx-repeat-map
                ("s" . jinx-next)
                ("S" . jinx-previous)
                ("[" . jinx-previous)
                ("]" . jinx-next)))
  :init
  (keymap-set next-map "s" '("Misspelling" . jinx-next))
  (keymap-set prev-map "s" '("Misspelling" . jinx-previous)))

Automatic language detection that updates the spell checker.

(use-package guess-language
  :ensure t
  :commands
  (guess-language-mode))

Terminal

Color

Avoid color when possible.

(setenv "NO_COLOR" "1")

eshell

(use-package eshell
  :preface
  (eval-when-compile
    (require 'em-hist)
    (require 'em-term))
  (defvar eshell-visual-commands)
  :hook
  (eshell-mode-hook . abbrev-mode)
  (eshell-mode-hook . init-eshell-define-keys)
  (eshell-mode-hook . init-eshell-set-visual-commands)
  :bind
  (("C-!" . eshell)
   (:map leader-map ("t" . eshell)))
  :init
  (setq eshell-buffer-maximum-lines 20000)
  (setq eshell-history-size 1000)
  (setq eshell-hist-ignoredups t)
  (setq eshell-error-if-no-glob t)
  (setq eshell-destroy-buffer-when-process-dies t)
  (autoload 'eshell-smart-initialize "em-smart")
  :config
  (defun init-eshell-define-keys ()
    (keymap-set eshell-mode-map "RET" '+eshell-expand-abbrev-and-send-input)
    (keymap-set eshell-mode-map "<tab>" 'completion-at-point))

  (defun init-eshell-set-visual-commands ()
    (setq eshell-visual-commands
          (append
           '("fish" "ghcid" "jshell" "most" "ssh" "tail" "tsun" "watch")
           eshell-visual-commands))))

Abbreviations

Fish-like abbreviations that expand on space or enter.

(use-package eshell
  :functions
  (+eshell-abbrev-expand-p)
  :preface
  (autoload 'eshell-parse-arguments "esh-arg")
  (autoload 'eshell-send-input "esh-mode")
  :init
  (define-abbrev-table 'eshell-mode-abbrev-table
    '(("base64" "base64 -w0")
      ("e" "find-file-other-window")
      ("E" "dired")
      ("gco" "git checkout")
      ("gd" "magit-diff-unstaged")
      ("gds" "magit-diff-staged")
      ("gs" "magit-status")
      ("time" "time -p")
      ("tree" "tree -a")
      ("week" "date '+%V'"))
    :enable-function #'+eshell-abbrev-expand-p)
  :config
  (defun +eshell-expand-abbrev-and-send-input ()
    "Expand abbreviation and send input to `eshell'."
    (interactive)
    (expand-abbrev)
    (call-interactively #'eshell-send-input))

  (defun +eshell-abbrev-expand-p ()
    "Return t if abbreviation should be expanded.
Expansion should happen when abbreviation is at the beginning of
the line or after an eshell operator."
    (let* ((end (point-marker))
           (begin (save-excursion (beginning-of-line) (point)))
           (args (catch 'eshell-incomplete (eshell-parse-arguments begin end))))
      (or (= 1 (length args))
          (let ((last-two-args (last args 2)))
            (and (consp (car last-two-args))
                 (eq (caar last-two-args)
                     'eshell-operator)))))))

Packages

eshell-fringe-status

Command execution status indicator in the fringe.

(use-package eshell-fringe-status
  :ensure t
  :hook
  (eshell-mode-hook . eshell-fringe-status-mode))
fish-completion

Populate auto-completions from fish.

(use-package fish-completion
  :ensure t
  :hook
  (eshell-mode-hook . fish-completion-mode))

vterm

Fast terminal emulator utilizing libvterm.

(use-package vterm
  :ensure t
  :bind
  (:map leader-map ("T" . vterm))
  :init
  (setq vterm-max-scrollback 100000)
  (setq vterm-shell "fish"))

Packages

vterm-toggle
(use-package vterm-toggle
  :ensure t
  :bind
  (("C-M-!" . vterm-toggle)
   (:map vterm-mode-map ("C-<return>" . vterm-toggle-insert-cd))))

Undo

Increase undo limit.

(setq undo-limit 1000000)
(setq undo-strong-limit (* 2 undo-limit))

vundo

Visual undo history navigation.

(use-package vundo
  :ensure t
  :bind
  (:map leader-map ("u" . vundo)))

AI

gptel

(use-package gptel
  :ensure t
  :functions
  (gptel-make-ollama)
  :bind
  (:map leader-map
        ("g" . gptel)
        ("G" . gptel-menu))
  :config
  (setq gptel-model 'llama3.2:latest)
  (setq gptel-backend (gptel-make-ollama "Ollama"
                                         :host "localhost:11434"
                                         :stream t
                                         :models '("llama3.2:latest"
                                                   "qwen2.5-coder:latest")))
  (setq gptel-default-mode 'org-mode)

  (cl-pushnew
   '(cli . "You are a large language model and a correct command line helper. Provide commands and only commands as output without any additional text, prompt or note.")
   gptel-directives
   :test #'equal)

  (cl-pushnew
   '(regex . "You are a large language model and regular expression expert. Respond with pure regular expressions without involvement of other programming languages.")
   gptel-directives
   :test #'equal))

(use-package gptel-quick
  :ensure t
  :bind
  (:map help-map ("," . gptel-quick)))

elysium

(use-package elysium
  :ensure t
  :bind
  (:map leader-map
        ("q" . elysium-query))
  :config
  (with-eval-after-load 'popper
    (cl-pushnew "\\*elysium\\*" popper-reference-buffers :test #'equal)))

Testing

Packages that I am currently testing or evaluating.

annotate

(use-package annotate
  :ensure t
  :commands
  (annotate-mode)
  :init
  (keymap-set toggle-map "a" '("Annotate" . annotate-mode)))

consult-git-log-grep

(use-package consult-git-log-grep
  :ensure t
  :after magit
  :init
  (setq consult-git-log-grep-open-function #'magit-show-commit))

dape

(use-package dape :ensure t)

elfeed

(use-package elfeed :ensure t)

freeze-it

(use-package freeze-it :ensure t)

Private

(require 'private nil t)

Documentation

Keybindings

I am trying to reduce the amount of custom keybindings, therefore I present a table of default keybindings in case I would forget them.

Aliases

KeybindingAlternative
M-C-[
TABC-i
RETC-m

Commands

KeybindingFunctionDescription
C-oopen-lineOpen line above
C-jelectric-newline-and-maybe-indentAdd newline and indent if needed
M-SPCjust-one-spaceEnsures just one space
M-\delete-horizontal-spaceDelete all space
M-^delete-indentationJoin current line with previous line
M-zzap-to-charDelete until character
C-S-backspacekill-whole-lineKill entire lines, can be used to move several lines at once
M-/dabbrev-expandAbbreviation completion
M-tab / C-[ C-icompletion-at-pointMore context aware completion
M-s .isearch-forward-symbol-at-pointSearch for the symbol at point
C-wkill-regionCut
M-wkill-ring-saveCopy
C-yyankPaste
M-yyank-nextPaste (next item)
C-x SPCrectangle-mark-modeRectangular selection
C-x r tstring-rectangleInsert string in beginning of rectangular selection (C-t in rectangle-mark-mode)
C-M-fforward-sexpMove forward inside a balanced expression
C-M-bbackward-sexpMove backward inside a balanced expression
C-M-nforward-listMove forward across one balanced group of parenthesis
C-M-pbackward-listMove backward across one balanced group of parenthesis
M-mback-to-indentationMove to the first non-whitespace character
M-eforward-sentenceEnd of sentence
M-abackward-sentenceStart of sentence
C-M-ddown-listMove forward down one level of parenthesis
C-M-ubackward-up-listMove backward out of one level of parenthesis
C-u C-x $set-selective-displayHide/show indentation level
C-x r w <reg>window-configuration-to-registerStore the window configuration of the selected frame in REGISTER
C-x r jjump-to-registerGo to location stored in REGISTER, or restore configuration stored there
C-x C-M-0global-text-scale-adjustChange font size of all faces
M-hmark-paragraphMark paragraph
C-SPCset-mark-commandSet a mark
C-u C-SPCpop-to-mark-commandPop a mark
C-x $set-selective-displayCode-folding via indentation

Gnus

KeybindingFunctionDescription
Lgnus-group-list-all-groupsList all groups (works together with prefix to provide level)
RETgnus-topic-select-groupList group mails (works together with prefix to see all)
ggnus-group-get-new-newsRefresh groups list
G Ggnus-group-make-nnir-groupSearch mails at server side
#gnus-group-mark-groupMark
M-#gnus-group-unmark-groupUn-mark
Rgnus-summary-reply-with-originalReply w/ quoted text
rgnus-summary-replyReploy w/o quoted text
S Wgnus-summary-wide-reply-with-originalReply all w/ quoted text
S wgnus-summary-wide-replyReply all w/o quoted text
m / C-x mgnus-new-mailCompose new mail
S D egnus-summary-resend-message-editRe-send a mail in Draft folder
C-c C-amml-attach-fileAttach a file
ognus-mime-save-partSave attachment
C-c C-fgnus-summary-mail-forwardForward mail
cgnus-group-catchup-currentMark mails as read

Org

KeybindingFunctionDescription
C-c C-worg-refileMove headline under another top level headline
<S-right>org-shiftrightCycle through todo keywords (right)
<S-left>org-shiftleftCycle through todo keywords (left)
C-c C-corg-ctrl-c-ctrl-cSet tags for an item
C-c C-torg-todoSet tags for an item (via menu)
C-c C-sorg-scheduleSchedule an item
C-c C-dorg-deadlineSet a deadline
C-c C-qorg-set-tags-commandAttach tags to item

Tasks

Improve bindings

  • Group editing bindings under logical prefix
  • magit-diff-range (code review)
  • Binding for
    • org-store-link
    • leader mnemonics? as a separate package, or is it too much work?
      • (t)oggle
      • (s)earch
      • (f)ile
        • (r)ecent
        • (s)ave
      • (b)uffer
        • b - switch
        • (k)ill
        • (n)ext/(p)rev - repeat
        • (r)evert
        • (j)ump (bookmark)

Split theme into several parts

  • One theme to set big headers and such things
  • One theme to highlight errors
  • One theme for the mode-line

Evaluate windmove

  • Perhaps with windmove-create-window t

Extract history persistence code (persistory)

  • comint
  • ielm (via comint and savehist)
  • haskell-interactive (via savehist)

Use vc-mode commands more C-x v g, C-x v v and C-x v =.

  • Also vc-dir and the vc-git-stash (can stash individual files)
  • Diff merge-base C-x v M D, C-x v M L
  • vc-log-search

Use ChangeLog entries C-x 4 a

Create macros via checking C-h l (view-lossage) then it can be used together with edit-last-kbd-macro.

Is it useful to use highlight-regexp?

Evaluate skeleton

Evaluate obvious.el

Prefix function that overrides kill-region as kill-ring-save for next command

Function to jump to file under point, preferably with support for : line number

Function to load theme defined in current file

Split configuration into essential and full feature

  • emacs-minimal (no extra packages? or favorites)
  • emacs (minimum amount of packages)
  • emacs-full (all packages)

Minimal

  • apheleia
  • consult
  • corfu
  • deadgrep
  • dtrt-indent
  • dumb-jump
  • embark
  • envrc
  • marginalia
  • markdown-mode
  • nix-ts-mode
  • orderless
  • popper
  • puni
  • readable-mono-theme
  • readable-typo-theme
  • transpose-frame
  • vertico
  • vundo

Regular

  • adaptive-wrap
  • all-the-icons
  • all-the-icons-completion
  • all-the-icons-dired
  • avy
  • cape
  • d2-mode
  • devdocs
  • diff-hl
  • dired-sidebar
  • dired-subtree
  • dslide
  • easy-escape
  • epithet
  • find-file-rg
  • fish-completion
  • gcmh
  • ghelp
  • git-modes
  • goto-chg
  • grugru
  • helpful
  • hide-mode-line
  • idle-highlight-mode
  • imenu-anywhere
  • imenu-extra
  • imenu-list
  • indent-bars
  • indent-info
  • jinx
  • link-hint
  • magit
  • miniedit
  • nix-mode
  • no-littering
  • noccur
  • nov
  • org-appear
  • org-limit-image-size
  • org-modern
  • pdf-tools
  • rainbow-delimiters
  • repl-toggle
  • separedit
  • tempel
  • terraform-mode
  • virtual-auto-fill
  • visual-fill-column
  • visual-replace
  • vterm
  • ws-butler (deprecate?)

Full

  • browse-at-remote
  • cakecrumbs
  • caml
  • cider
  • clojure-mode
  • cobol-mode
  • color-identifiers-mode
  • cov
  • crystal-mode
  • csv-mode
  • dired-git-info
  • docker
  • elm-mode
  • erlang
  • eshell-fringe-status
  • explain-pause-mode
  • fish-mode
  • flymake-racket
  • focus
  • gotest
  • gradle-mode
  • groovy-mode
  • guess-language
  • haskell-mode
  • hl-todo
  • inf-crystal
  • inf-ruby
  • json-navigator
  • kind-icon
  • kotlin-mode
  • kubernetes
  • ligature
  • mermaid-mode
  • minitest
  • nginx-mode
  • ob-http
  • org-cliplink
  • org-contrib
  • org-noter
  • outline-minor-faces
  • ox-epub
  • package-lint-flymake
  • page-break-lines
  • plantuml-mode
  • pomm
  • protobuf-mode
  • python-test
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