56f9fcdd734a5a5804d790cad234774252989d97
[~bandali/configs] / init.org
1 #+title: =aminb='s Literate Emacs Configuration
2 #+author: Amin Bandali
3 #+babel: :cache yes
4 #+property: header-args :tangle yes
5
6 * About
7 :PROPERTIES:
8 :CUSTOM_ID: about
9 :END:
10
11 This org file is my literate configuration for GNU Emacs, and is
12 tangled to [[./init.el][init.el]]. Packages are installed and managed using
13 [[https://github.com/emacscollective/borg][Borg]]. Over the years, I've taken inspiration from configurations of
14 many different people. Some of the configurations that I can remember
15 off the top of my head are:
16
17 - [[https://github.com/dieggsy/dotfiles][dieggsy/dotfiles]]: literate Emacs and dotfiles configuration, uses
18 straight.el for managing packages
19 - [[https://github.com/dakra/dmacs][dakra/dmacs]]: literate Emacs configuration, using Borg for managing
20 packages
21 - [[http://pages.sachachua.com/.emacs.d/Sacha.html][Sacha Chua's literate Emacs configuration]]
22 - [[https://github.com/dakrone/eos][dakrone/eos]]
23 - Ryan Rix's [[http://doc.rix.si/cce/cce.html][Complete Computing Environment]] ([[http://doc.rix.si/projects/fsem.html][about cce]])
24 - [[https://github.com/jwiegley/dot-emacs][jwiegley/dot-emacs]]: nix-based configuration
25 - [[https://github.com/wasamasa/dotemacs][wasamasa/dotemacs]]
26 - [[https://github.com/hlissner/doom-emacs][Doom Emacs]]
27
28 I'd like to have a fully reproducible Emacs setup (part of the reason
29 why I store my configuration in this repository) but unfortunately out
30 of the box, that's not achievable with =package.el=, not currently
31 anyway. So, I've opted to use Borg. For what it's worth, I briefly
32 experimented with [[https://github.com/raxod502/straight.el][straight.el]], but found that it added about 2 seconds
33 to my init time; which is unacceptable for me: I use Emacs as my
34 window manager (via EXWM) and coming from bspwm, I'm too used to
35 having fast startup times.
36
37 ** Installation
38
39 To use this config for your Emacs, first you need to clone this repo,
40 then bootstrap Borg, tell Borg to retrieve package submodules, and
41 byte-compiled the packages. Something along these lines should work:
42
43 #+begin_src sh :tangle no
44 git clone https://github.com/aminb/dotfiles ~/.emacs.d
45 cd ~/.emacs.d
46 make bootstrap-borg
47 make tangle-init
48 make bootstrap
49 make build
50 #+end_src
51
52 * Contents :toc_1:noexport:
53
54 - [[#about][About]]
55 - [[#header][Header]]
56 - [[#initial-setup][Initial setup]]
57 - [[#core][Core]]
58 - [[#post-initialization][Post initialization]]
59 - [[#footer][Footer]]
60
61 * Header
62 :PROPERTIES:
63 :CUSTOM_ID: header
64 :END:
65
66 ** First line
67
68 #+begin_src emacs-lisp :comments none
69 ;;; init.el --- Amin Bandali's Emacs config -*- lexical-binding: t ; eval: (view-mode 1)-*-
70 #+end_src
71
72 Enable =view-mode=, which both makes the file read-only (as a reminder
73 that =init.el= is an auto-generated file, not supposed to be edited),
74 and provides some convenient key bindings for browsing through the
75 file.
76
77 ** License
78
79 #+begin_src emacs-lisp :comments none
80 ;; Copyright (C) 2018 Amin Bandali <amin@aminb.org>
81
82 ;; This program is free software: you can redistribute it and/or modify
83 ;; it under the terms of the GNU General Public License as published by
84 ;; the Free Software Foundation, either version 3 of the License, or
85 ;; (at your option) any later version.
86
87 ;; This program is distributed in the hope that it will be useful,
88 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
89 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
90 ;; GNU General Public License for more details.
91
92 ;; You should have received a copy of the GNU General Public License
93 ;; along with this program. If not, see <https://www.gnu.org/licenses/>.
94 #+end_src
95
96 ** Commentary
97
98 #+begin_src emacs-lisp :comments none
99 ;;; Commentary:
100
101 ;; Emacs configuration of Amin Bandali, computer scientist and functional
102 ;; programmer.
103
104 ;; THIS FILE IS AUTO-GENERATED FROM `init.org'.
105 #+end_src
106
107 ** Naming conventions
108
109 The conventions below were inspired by [[https://github.com/hlissner/doom-emacs][Doom]]'s conventions, found
110 [[https://github.com/hlissner/doom-emacs/blob/5dacbb7cb1c6ac246a9ccd15e6c4290def67757c/core/core.el#L3-L17][here]]. Naturally, I use my initials, =ab=, instead of =doom=.
111
112 #+begin_src emacs-lisp :comments none
113 ;; Naming conventions:
114 ;;
115 ;; ab-... public variables or non-interactive functions
116 ;; ab--... private anything (non-interactive), not safe for direct use
117 ;; ab/... an interactive function; safe for M-x or keybinding
118 ;; ab:... an evil operator, motion, or command
119 ;; ab|... a hook function
120 ;; ab*... an advising function
121 ;; ab@... a hydra command
122 ;; ...! a macro
123 #+end_src
124
125 * Initial setup
126 :PROPERTIES:
127 :CUSTOM_ID: initial-setup
128 :END:
129
130 #+begin_src emacs-lisp :comments none
131 ;;; Code:
132 #+end_src
133
134 ** Emacs initialization
135
136 I'd like to do a couple of measurements of Emacs' startup time. First,
137 let's see how long Emacs takes to start up, before even loading
138 =init.el=, i.e. =user-init-file=:
139
140 #+begin_src emacs-lisp
141 (defvar ab--before-user-init-time (current-time)
142 "Value of `current-time' when Emacs begins loading `user-init-file'.")
143 (message "Loading Emacs...done (%.3fs)"
144 (float-time (time-subtract ab--before-user-init-time
145 before-init-time)))
146 #+end_src
147
148 Also, temporarily increase ~gc-cons-threshhold~ and
149 ~gc-cons-percentage~ during startup to reduce garbage collection
150 frequency. Clearing the ~file-name-handler-alist~ seems to help reduce
151 startup time as well.
152
153 #+begin_src emacs-lisp
154 (defvar ab--gc-cons-threshold gc-cons-threshold)
155 (defvar ab--gc-cons-percentage gc-cons-percentage)
156 (defvar ab--file-name-handler-alist file-name-handler-alist)
157 (setq gc-cons-threshold (* 400 1024 1024) ; 400 MiB
158 gc-cons-percentage 0.6
159 file-name-handler-alist nil
160 ;; sidesteps a bug when profiling with esup
161 esup-child-profile-require-level 0)
162 #+end_src
163
164 Of course, we'd like to set them back to their defaults once we're
165 done initializing.
166
167 #+begin_src emacs-lisp
168 (add-hook
169 'after-init-hook
170 (lambda ()
171 (let ((elapsed (float-time (time-subtract (current-time)
172 ab--before-user-init-time))))
173 (message "Loading %s...done (%.3fs) [after-init]"
174 user-init-file elapsed))
175 (setq gc-cons-threshold ab--gc-cons-threshold
176 gc-cons-percentage ab--gc-cons-percentage
177 file-name-handler-alist ab--file-name-handler-alist)))
178 #+end_src
179
180 Increase the number of lines kept in message logs (the =*Messages*=
181 buffer).
182
183 #+begin_src emacs-lisp
184 (setq message-log-max 20000)
185 #+end_src
186
187 Optionally, we could suppress some byte compiler warnings like below,
188 but for now I've decided to keep them enabled. See documentation for
189 ~byte-compile-warnings~ for more details.
190
191 #+begin_src emacs-lisp
192 ;; (setq byte-compile-warnings
193 ;; '(not free-vars unresolved noruntime lexical make-local))
194 #+end_src
195
196 ** Package management
197
198 *** No =package.el=
199
200 I can do all my package management things with Borg, and don't need
201 Emacs' built-in =package.el=. Emacs 27 lets us disable =package.el= in
202 the =early-init-file= (see [[https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=24acb31c04b4048b85311d794e600ecd7ce60d3b][here]]).
203
204 #+begin_src emacs-lisp :tangle early-init.el
205 (setq package-enable-at-startup nil)
206 #+end_src
207
208 But since Emacs 27 isn't out yet (Emacs 26 is just around the corner
209 right now), and even when released it'll be long before most distros
210 ship in their repos, I'll still put the old workaround with the
211 commented call to ~package-initialize~ here anyway.
212
213 #+begin_src emacs-lisp
214 (setq package-enable-at-startup nil)
215 ;; (package-initialize)
216 #+end_src
217
218 *** Borg
219
220 #+begin_quote
221 Assimilate Emacs packages as Git submodules
222 #+end_quote
223
224 [[https://github.com/emacscollective/borg][Borg]] is at the heart of package management of my Emacs setup. In
225 short, it creates a git submodule in =lib/= for each package, which
226 can then be managed with the help of Magit or other tools.
227
228 #+begin_src emacs-lisp
229 (setq user-init-file (or load-file-name buffer-file-name)
230 user-emacs-directory (file-name-directory user-init-file))
231 (add-to-list 'load-path
232 (expand-file-name "lib/borg" user-emacs-directory))
233 (require 'borg)
234 (borg-initialize)
235 #+end_src
236
237 *** =use-package=
238
239 #+begin_quote
240 A use-package declaration for simplifying your .emacs
241 #+end_quote
242
243 [[https://github.com/jwiegley/use-package][use-package]] is an awesome utility for managing and configuring
244 packages (in our case especially the latter) in a neatly organized way
245 and without compromising on performance.
246
247 #+begin_src emacs-lisp
248 (require 'use-package)
249 (if nil ; set to t when need to debug init
250 (setq use-package-verbose t
251 use-package-expand-minimally nil
252 use-package-compute-statistics t
253 debug-on-error t)
254 (setq use-package-verbose nil
255 use-package-expand-minimally t))
256 #+end_src
257
258 *** Epkg
259
260 #+begin_quote
261 Browse the Emacsmirror package database
262 #+end_quote
263
264 Epkg provides access to a local copy of the [[https://emacsmirror.net][Emacsmirror]] package
265 database, low-level functions for querying the database, and a
266 =package.el=-like user interface for browsing the available packages.
267
268 #+begin_src emacs-lisp
269 (use-package epkg
270 :defer t)
271 #+end_src
272
273 ** No littering in =~/.emacs.d=
274
275 #+begin_quote
276 Help keeping ~/.emacs.d clean
277 #+end_quote
278
279 By default, even for Emacs' built-in packages, the configuration files
280 and persistent data are all over the place. Use =no-littering= to help
281 contain the mess.
282
283 #+begin_src emacs-lisp
284 (use-package no-littering
285 :demand t
286 :config
287 (savehist-mode 1)
288 (add-to-list 'savehist-additional-variables 'kill-ring)
289 (save-place-mode 1)
290 (setq auto-save-file-name-transforms
291 `((".*" ,(no-littering-expand-var-file-name "auto-save/") t))))
292 #+end_src
293
294 ** Custom file (=custom.el=)
295
296 I'm not planning on using the custom file much, but even so, I
297 definitely don't want it mixing with =init.el=. So, here; let's give
298 it it's own file. While at it, treat themes as safe.
299
300 #+begin_src emacs-lisp
301 (use-package custom
302 :no-require t
303 :config
304 (setq custom-file (no-littering-expand-etc-file-name "custom.el"))
305 (when (file-exists-p custom-file)
306 (load custom-file))
307 (setf custom-safe-themes t))
308 #+end_src
309
310 ** Better =$PATH= handling
311
312 Let's use [[https://github.com/purcell/exec-path-from-shell][exec-path-from-shell]] to make Emacs use the =$PATH= as set up
313 in my shell.
314
315 #+begin_src emacs-lisp
316 (use-package exec-path-from-shell
317 :defer 1
318 :init
319 (setq exec-path-from-shell-check-startup-files nil)
320 :config
321 (exec-path-from-shell-initialize)
322 ;; while we're at it, let's fix access to our running ssh-agent
323 (exec-path-from-shell-copy-env "SSH_AGENT_PID")
324 (exec-path-from-shell-copy-env "SSH_AUTH_SOCK"))
325 #+end_src
326
327 ** Server
328
329 Start server if not already running. Alternatively, can be done by
330 issuing =emacs --daemon= in the terminal, which can be automated with
331 a systemd service or using =brew services start emacs= on macOS. I use
332 Emacs as my window manager (via EXWM), so I always start Emacs on
333 login; so starting the server from inside Emacs is good enough for me.
334
335 See [[https://www.gnu.org/software/emacs/manual/html_node/emacs/Emacs-Server.html#Emacs-Server][Using Emacs as a Server]].
336
337 #+begin_src emacs-lisp
338 (use-package server
339 :config (or (server-running-p) (server-mode)))
340 #+end_src
341
342 * Core
343 :PROPERTIES:
344 :CUSTOM_ID: core
345 :END:
346
347 ** Defaults
348
349 *** Time and battery in mode-line
350
351 Enable displaying time and battery in the mode-line, since I'm not
352 using the Xfce panel anymore. Also, I don't need to see the load
353 average on a regular basis, so disable that.
354
355 #+begin_src emacs-lisp
356 (use-package time
357 :ensure nil
358 :init
359 (setq display-time-default-load-average nil)
360 :config
361 (display-time-mode))
362
363 (use-package battery
364 :ensure nil
365 :config
366 (display-battery-mode))
367 #+end_src
368
369 *** Smaller fringe
370
371 Might want to set the fringe to a smaller value, especially if using
372 EXWM. I'm fine with the default for now.
373
374 #+begin_src emacs-lisp
375 ;; (fringe-mode '(3 . 1))
376 (fringe-mode nil)
377 #+end_src
378
379 *** Disable disabled commands
380
381 Emacs disables some commands by default that could persumably be
382 confusing for novice users. Let's disable that.
383
384 #+begin_src emacs-lisp
385 (setq disabled-command-function nil)
386 #+end_src
387
388 *** Kill-ring
389
390 Save what I copy into clipboard from other applications into Emacs'
391 kill-ring, which would allow me to still be able to easily access it
392 in case I kill (cut or copy) something else inside Emacs before
393 yanking (pasting) what I'd originally intended to.
394
395 #+begin_src emacs-lisp
396 (setq save-interprogram-paste-before-kill t)
397 #+end_src
398
399 *** Minibuffer
400
401 #+begin_src emacs-lisp
402 (setq enable-recursive-minibuffers t
403 resize-mini-windows t)
404 #+end_src
405
406 *** Lazy-person-friendly yes/no prompts
407
408 Lazy people would prefer to type fewer keystrokes, especially for yes
409 or no questions. I'm lazy.
410
411 #+begin_src emacs-lisp
412 (defalias 'yes-or-no-p #'y-or-n-p)
413 #+end_src
414
415 *** Startup screen and =*scratch*=
416
417 Firstly, let Emacs know that I'd like to have =*scratch*= as my
418 startup buffer.
419
420 #+begin_src emacs-lisp
421 (setq initial-buffer-choice t)
422 #+end_src
423
424 Now let's customize the =*scratch*= buffer a bit. First off, I don't
425 need the default hint.
426
427 #+begin_src emacs-lisp
428 (setq initial-scratch-message nil)
429 #+end_src
430
431 Also, let's use Text mode as the major mode, in case I want to
432 customize it (=*scratch*='s default major mode, Fundamental mode,
433 can't really be customized).
434
435 #+begin_src emacs-lisp
436 (setq initial-major-mode 'text-mode)
437 #+end_src
438
439 Inhibit the buffer list when more than 2 files are loaded.
440
441 #+begin_src emacs-lisp
442 (setq inhibit-startup-buffer-menu t)
443 #+end_src
444
445 I don't really need to see the startup screen or echo area message
446 either.
447
448 #+begin_src emacs-lisp
449 (advice-add #'display-startup-echo-area-message :override #'ignore)
450 (setq inhibit-startup-screen t
451 inhibit-startup-echo-area-message user-login-name)
452 #+end_src
453
454 *** More useful frame titles
455
456 Show either the file name or the buffer name (in case the buffer isn't
457 visiting a file). Borrowed from Emacs Prelude.
458
459 #+begin_src emacs-lisp
460 (setq frame-title-format
461 '("" invocation-name " - "
462 (:eval (if (buffer-file-name)
463 (abbreviate-file-name (buffer-file-name))
464 "%b"))))
465 #+end_src
466
467 *** Backups
468
469 Emacs' default backup settings aren't that great. Let's use more
470 sensible options. See documentation for the ~make-backup-file~
471 variable.
472
473 #+begin_src emacs-lisp
474 (setq backup-by-copying t
475 version-control t)
476 #+end_src
477
478 ** Packages
479
480 The packages in this section are absolutely essential to my everyday
481 workflow, and they play key roles in how I do my computing. They
482 immensely enhance the Emacs experience for me; both using Emacs, and
483 customizing it.
484
485 *** [[https://github.com/emacscollective/auto-compile][auto-compile]]
486
487 #+begin_src emacs-lisp
488 (use-package auto-compile
489 :demand t
490 :config
491 (auto-compile-on-load-mode)
492 (auto-compile-on-save-mode)
493 (setq auto-compile-display-buffer nil
494 auto-compile-mode-line-counter t
495 auto-compile-source-recreate-deletes-dest t
496 auto-compile-toggle-deletes-nonlib-dest t
497 auto-compile-update-autoloads t)
498 (add-hook 'auto-compile-inhibit-compile-hook
499 'auto-compile-inhibit-compile-detached-git-head))
500 #+end_src
501
502 *** TODO [[https://github.com/Kungsgeten/ryo-modal][ryo-modal]]
503
504 #+begin_quote
505 Roll your own modal mode
506 #+end_quote
507
508 *** [[https://github.com/ch11ng/exwm][EXWM]] (window manager)
509
510 #+begin_src emacs-lisp
511 (use-package exwm
512 :demand t
513 :config
514 (require 'exwm-config)
515
516 ;; Set the initial workspace number.
517 (setq exwm-workspace-number 4)
518
519 ;; Make class name the buffer name, truncating beyond 50 characters
520 (defun exwm-rename-buffer ()
521 (interactive)
522 (exwm-workspace-rename-buffer
523 (concat exwm-class-name ":"
524 (if (<= (length exwm-title) 50) exwm-title
525 (concat (substring exwm-title 0 49) "...")))))
526 (add-hook 'exwm-update-class-hook 'exwm-rename-buffer)
527 (add-hook 'exwm-update-title-hook 'exwm-rename-buffer)
528
529 ;; 's-R': Reset
530 (exwm-input-set-key (kbd "s-R") #'exwm-reset)
531 ;; 's-\': Switch workspace
532 (exwm-input-set-key (kbd "s-\\") #'exwm-workspace-switch)
533 ;; 's-N': Switch to certain workspace
534 (dotimes (i 10)
535 (exwm-input-set-key (kbd (format "s-%d" i))
536 (lambda ()
537 (interactive)
538 (exwm-workspace-switch-create ,i))))
539 ;; 's-SPC': Launch application
540 (exwm-input-set-key
541 (kbd "s-SPC")
542 (lambda (command)
543 (interactive (list (read-shell-command "➜ ")))
544 (start-process-shell-command command nil command)))
545
546 (exwm-input-set-key (kbd "M-s-SPC") #'counsel-linux-app)
547
548 ;; Shorten 'C-c C-q' to 'C-q'
549 (define-key exwm-mode-map [?\C-q] #'exwm-input-send-next-key)
550
551 ;; Line-editing shortcuts
552 (setq exwm-input-simulation-keys
553 '(;; movement
554 ([?\C-b] . [left])
555 ([?\M-b] . [C-left])
556 ([?\C-f] . [right])
557 ([?\M-f] . [C-right])
558 ([?\C-p] . [up])
559 ([?\C-n] . [down])
560 ([?\C-a] . [home])
561 ([?\C-e] . [end])
562 ([?\M-v] . [prior])
563 ([?\C-v] . [next])
564 ([?\C-d] . [delete])
565 ([?\C-k] . [S-end delete])
566 ;; cut/paste
567 ([?\C-w] . [?\C-x])
568 ([?\M-w] . [?\C-c])
569 ([?\C-y] . [?\C-v])
570 ;; search
571 ([?\C-s] . [?\C-f])))
572
573 ;; Enable EXWM
574 (exwm-enable)
575
576 (add-hook 'exwm-init-hook #'exwm-config--fix/ido-buffer-window-other-frame)
577
578 (require 'exwm-systemtray)
579 (exwm-systemtray-enable)
580
581 (require 'exwm-randr)
582 (exwm-randr-enable)
583
584 (exwm-input-set-key
585 (kbd "M-SPC")
586 (lambda ()
587 (interactive)
588 (start-process "rofi-pass" nil "rofi-pass"))))
589 #+end_src
590
591 *** [[https://orgmode.org/][Org mode]]
592
593 #+begin_quote
594 Org mode is for keeping notes, maintaining TODO lists, planning
595 projects, and authoring documents with a fast and effective plain-text
596 system.
597 #+end_quote
598
599 In short, my favourite way of life.
600
601 #+begin_src emacs-lisp
602 (setq org-src-tab-acts-natively t
603 org-src-preserve-indentation nil
604 org-edit-src-content-indentation 0)
605 #+end_src
606
607 *** [[https://magit.vc/][Magit]]
608
609 #+begin_quote
610 It's Magit! A Git porcelain inside Emacs.
611 #+end_quote
612
613 Not just how I do git, but /the/ way to do git.
614
615 #+begin_src emacs-lisp
616 (use-package magit
617 :defer t
618 :bind (("s-g" . magit-status)
619 ("C-x g" . magit-status)
620 ("C-x M-g" . magit-dispatch-popup))
621 :config
622 (magit-add-section-hook 'magit-status-sections-hook
623 'magit-insert-modules
624 'magit-insert-stashes
625 'append))
626 #+end_src
627
628 *** [[https://github.com/abo-abo/swiper][Ivy]] (and friends)
629
630 #+begin_quote
631 Ivy - a generic completion frontend for Emacs, Swiper - isearch with
632 an overview, and more. Oh, man!
633 #+end_quote
634
635 There's no way I could top that, so I won't attempt to.
636
637 **** Ivy
638
639 #+begin_src emacs-lisp
640 (use-package ivy
641 :bind
642 (:map ivy-minibuffer-map
643 ([escape] . keyboard-escape-quit)
644 ;; ("C-j" . ivy-next-line)
645 ;; ("C-k" . ivy-previous-line)
646 ([S-up] . ivy-previous-history-element)
647 ([S-down] . ivy-next-history-element)
648 ("DEL" . ivy-backward-delete-char))
649 :config
650 (ivy-mode 1))
651 #+end_src
652
653 **** Swiper
654
655 #+begin_src emacs-lisp
656 (use-package swiper
657 :bind (([remap isearch-forward] . swiper)
658 ([remap isearch-backward] . swiper)))
659 #+end_src
660
661 **** Counsel
662
663 #+begin_src emacs-lisp
664 (use-package counsel
665 :defer 1.5
666 :bind (([remap execute-extended-command] . counsel-M-x)
667 ([remap find-file] . counsel-find-file)
668 ("s-r" . counsel-recentf)
669 :map minibuffer-local-map
670 ("C-r" . counsel-minibuffer-history))
671 :config
672 (counsel-mode 1)
673 (defalias 'locate #'counsel-locate))
674 #+end_src
675
676 * Borg's =layer/essentials=
677
678 TODO: break this giant source block down into individual org sections.
679
680 #+begin_src emacs-lisp
681 (use-package dash
682 :config (dash-enable-font-lock))
683
684 (use-package diff-hl
685 :config
686 (setq diff-hl-draw-borders nil)
687 (global-diff-hl-mode)
688 (add-hook 'magit-post-refresh-hook 'diff-hl-magit-post-refresh t))
689
690 (use-package dired
691 :defer t
692 :config (setq dired-listing-switches "-alh"))
693
694 (use-package eldoc
695 :when (version< "25" emacs-version)
696 :config (global-eldoc-mode))
697
698 (use-package help
699 :defer t
700 :config (temp-buffer-resize-mode))
701
702 (progn ; `isearch'
703 (setq isearch-allow-scroll t))
704
705 (use-package lisp-mode
706 :config
707 (add-hook 'emacs-lisp-mode-hook 'outline-minor-mode)
708 (add-hook 'emacs-lisp-mode-hook 'reveal-mode)
709 (defun indent-spaces-mode ()
710 (setq indent-tabs-mode nil))
711 (add-hook 'lisp-interaction-mode-hook #'indent-spaces-mode))
712
713 (use-package man
714 :defer t
715 :config (setq Man-width 80))
716
717 (use-package paren
718 :config (show-paren-mode))
719
720 (use-package prog-mode
721 :config (global-prettify-symbols-mode)
722 (defun indicate-buffer-boundaries-left ()
723 (setq indicate-buffer-boundaries 'left))
724 (add-hook 'prog-mode-hook #'indicate-buffer-boundaries-left))
725
726 (use-package recentf
727 :demand t
728 :config (add-to-list 'recentf-exclude "^/\\(?:ssh\\|su\\|sudo\\)?:"))
729
730 (use-package savehist
731 :config (savehist-mode))
732
733 (use-package saveplace
734 :when (version< "25" emacs-version)
735 :config (save-place-mode))
736
737 (use-package simple
738 :config (column-number-mode))
739
740 (progn ; `text-mode'
741 (add-hook 'text-mode-hook #'indicate-buffer-boundaries-left))
742
743 (use-package tramp
744 :defer t
745 :config
746 (add-to-list 'tramp-default-proxies-alist '(nil "\\`root\\'" "/ssh:%h:"))
747 (add-to-list 'tramp-default-proxies-alist '("localhost" nil nil))
748 (add-to-list 'tramp-default-proxies-alist
749 (list (regexp-quote (system-name)) nil nil)))
750
751 (use-package undo-tree
752 :config
753 (global-undo-tree-mode)
754 (setq undo-tree-mode-lighter ""))
755 #+end_src
756
757 * Programming modes
758
759 ** Lean mode
760
761 #+begin_src emacs-lisp
762 (use-package lean-mode)
763 #+end_src
764
765 * Post initialization
766 :PROPERTIES:
767 :CUSTOM_ID: post-initialization
768 :END:
769
770 Display how long it took to load the init file.
771
772 #+begin_src emacs-lisp
773 (message "Loading %s...done (%.3fs)" user-init-file
774 (float-time (time-subtract (current-time)
775 ab--before-user-init-time)))
776 #+end_src
777
778 * Footer
779 :PROPERTIES:
780 :CUSTOM_ID: footer
781 :END:
782
783 #+begin_src emacs-lisp :comments none
784 ;;; init.el ends here
785 #+end_src