git.shemshak.org - ~bandali/configs/blob - init.org

   1 #+title: Literate Emacs Configuration of Amin Bandali
   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/raxod502/straight.el][straight.el]].  Over the years, I've taken inspiration from
  14 configurations of many different people.  Some of the configurations
  15 that I can remember 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 =straight.el=.  I also used Borg for a
  32 few months, but decided to try =straight.el= which allows direct use
  33 of the various package archives.
  34
  35 ** Installation
  36 :PROPERTIES:
  37 :CUSTOM_ID: installation
  38 :END:
  39
  40 To use this config for your Emacs, first you need to clone this repo,
  41 then tangle =init.org= into =init.el=, and optionally byte-compile
  42 =init.el=.
  43
  44 First, clone the repository and =cd= into it:
  45
  46 #+begin_src sh :tangle no
  47 git clone https://git.sr.ht/~bandali/dotfiles ~/.emacs.d
  48 cd ~/.emacs.d
  49 #+end_src
  50
  51 Then, decide if you would like to use a byte-compiled init file, and
  52 set the [[#byte-compiled-init][a/byte-compiled-init]] variable accordingly.
  53
  54 Now, first tangle =init.org=, and only if you chose to have a
  55 byte-compiled init, build init as well:
  56
  57 #+begin_src sh :tangle no
  58 make tangle-init
  59 make build-init
  60 #+end_src
  61
  62 If you'd like to use a byte-compiled init, it's important that it be
  63 recompiled whenever =init.el= is generated from an updated =init.org=.
  64 Not only does my setup automatically and asynchronously tangle
  65 =init.org= to =init.el= every time you edit and save =init.org= in GNU
  66 Emacs, it will also invoke =make build-init= if you set
  67 =a/byte-compiled-init= to =t= above, so you wouldn't have to worry
  68 about manually tangling and compiling your init file whenever you
  69 change it.  The output of the last byte-compilation in the current
  70 session is kept in a =*compilation*= buffer, which will automatically
  71 be displayed if compilation fails.
  72
  73 * Contents                                                   :toc_1:noexport:
  74
  75 - [[#about][About]]
  76 - [[#header][Header]]
  77 - [[#initial-setup][Initial setup]]
  78 - [[#core][Core]]
  79 - [[#borg-essentials][Borg's =layer/essentials=]]
  80 - [[#editing][Editing]]
  81 - [[#syntax-spell-checking][Syntax and spell checking]]
  82 - [[#programming-modes][Programming modes]]
  83 - [[#emacs-enhancements][Emacs enhancements]]
  84 - [[#email][Email]]
  85 - [[#blogging][Blogging]]
  86 - [[#post-initialization][Post initialization]]
  87 - [[#footer][Footer]]
  88
  89 * Header
  90 :PROPERTIES:
  91 :CUSTOM_ID: header
  92 :END:
  93
  94 ** First line
  95
  96 #+begin_src emacs-lisp :comments none
  97 ;;; init.el --- Amin Bandali's Emacs config -*- lexical-binding: t; eval: (view-mode 1) -*-
  98 #+end_src
  99
 100 Enable =view-mode=, which both makes the file read-only (as a reminder
 101 that =init.el= is an auto-generated file, not supposed to be edited),
 102 and provides some convenient key bindings for browsing through the
 103 file.
 104
 105 ** License
 106
 107 #+begin_src emacs-lisp :comments none
 108 ;; Copyright (C) 2018-2019  Amin Bandali <bandali@gnu.org>
 109
 110 ;; This program is free software: you can redistribute it and/or modify
 111 ;; it under the terms of the GNU General Public License as published by
 112 ;; the Free Software Foundation, either version 3 of the License, or
 113 ;; (at your option) any later version.
 114
 115 ;; This program is distributed in the hope that it will be useful,
 116 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 117 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 118 ;; GNU General Public License for more details.
 119
 120 ;; You should have received a copy of the GNU General Public License
 121 ;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
 122 #+end_src
 123
 124 ** Commentary
 125
 126 #+begin_src emacs-lisp :comments none
 127 ;;; Commentary:
 128
 129 ;; Emacs configuration of Amin Bandali, computer scientist, functional
 130 ;; programmer, and free software advocate.
 131
 132 ;; THIS FILE IS AUTO-GENERATED FROM `init.org'.
 133 #+end_src
 134
 135 * Initial setup
 136 :PROPERTIES:
 137 :CUSTOM_ID: initial-setup
 138 :END:
 139
 140 ** Byte-compiled init preference
 141 :PROPERTIES:
 142 :CUSTOM_ID: byte-compiled-init
 143 :END:
 144
 145 If you would like a byte-compiled init file, set the following
 146 variable to ~t~, otherwise set it to ~nil~.
 147
 148 #+begin_src emacs-lisp
 149 (defvar a/byte-compiled-init t
 150   "If non-nil, byte-(re)compile init.el on successful tangles.")
 151 #+end_src
 152
 153 You can click on [[#installation][Installation]] to jump back up there if you like :)
 154
 155 ** Emacs initialization
 156
 157 I'd like to do a couple of measurements of Emacs' startup time. First,
 158 let's see how long Emacs takes to start up, before even loading
 159 =init.el=, i.e. =user-init-file=:
 160
 161 #+begin_src emacs-lisp
 162 (defvar a/before-user-init-time (current-time)
 163   "Value of `current-time' when Emacs begins loading `user-init-file'.")
 164 (message "Loading Emacs...done (%.3fs)"
 165          (float-time (time-subtract a/before-user-init-time
 166                                     before-init-time)))
 167 #+end_src
 168
 169 Also, temporarily increase ~gc-cons-threshhold~ and
 170 ~gc-cons-percentage~ during startup to reduce garbage collection
 171 frequency. Clearing the ~file-name-handler-alist~ seems to help reduce
 172 startup time as well.
 173
 174 #+begin_src emacs-lisp
 175 (defvar a/gc-cons-threshold gc-cons-threshold)
 176 (defvar a/gc-cons-percentage gc-cons-percentage)
 177 (defvar a/file-name-handler-alist file-name-handler-alist)
 178 (setq gc-cons-threshold (* 400 1024 1024)  ; 400 MiB
 179       gc-cons-percentage 0.6
 180       file-name-handler-alist nil
 181       ;; sidesteps a bug when profiling with esup
 182       esup-child-profile-require-level 0)
 183 #+end_src
 184
 185 Of course, we'd like to set them back to their defaults once we're
 186 done initializing.
 187
 188 #+begin_src emacs-lisp
 189 (add-hook
 190  'after-init-hook
 191  (lambda ()
 192    (setq gc-cons-threshold a/gc-cons-threshold
 193          gc-cons-percentage a/gc-cons-percentage
 194          file-name-handler-alist a/file-name-handler-alist)))
 195 #+end_src
 196
 197 Increase the number of lines kept in message logs (the =*Messages*=
 198 buffer).
 199
 200 #+begin_src emacs-lisp
 201 (setq message-log-max 20000)
 202 #+end_src
 203
 204 Optionally, we could suppress some byte compiler warnings like below,
 205 but for now I've decided to keep them enabled. See documentation for
 206 ~byte-compile-warnings~ for more details.
 207
 208 #+begin_src emacs-lisp
 209 ;; (setq byte-compile-warnings
 210 ;;       '(not free-vars unresolved noruntime lexical make-local))
 211 #+end_src
 212
 213 ** whoami
 214
 215 #+begin_src emacs-lisp
 216 (setq user-full-name "Amin Bandali"
 217       user-mail-address "amin@bndl.org")
 218 #+end_src
 219
 220 ** Package management
 221
 222 *** No =package.el=
 223
 224 I can do all my package management things with =straight.el=, and
 225 don't need Emacs' built-in =package.el=.  Emacs 27 lets us disable
 226 =package.el= in the =early-init-file= (see [[https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=24acb31c04b4048b85311d794e600ecd7ce60d3b][here]]).
 227
 228 #+begin_src emacs-lisp :tangle early-init.el
 229 (setq package-enable-at-startup nil)
 230 #+end_src
 231
 232 But since Emacs 27 isn't out yet (Emacs 26 is just around the corner
 233 right now), and even when released it'll be long before most distros
 234 ship in their repos, I'll still put the old workaround with the
 235 commented call to ~package-initialize~ here anyway.
 236
 237 #+begin_src emacs-lisp :tangle no
 238 (setq package-enable-at-startup nil)
 239 ;; (package-initialize)
 240 #+end_src
 241
 242 Update: the above is not necessary, since =straight.el= automatically
 243 does that (and more).  See =straight-package-neutering-mode=.
 244
 245 *** =straight.el=
 246
 247 #+begin_quote
 248 Next-generation, purely functional package manager for the Emacs
 249 hacker.
 250 #+end_quote
 251
 252 =straight.el= allows me to have a fully reproducible Emacs setup.
 253
 254 #+begin_src emacs-lisp
 255 ;; Main engine start...
 256
 257 (setq straight-repository-branch "develop"
 258       straight-check-for-modifications '(check-on-save find-when-checking))
 259
 260 (defun a/bootstrap-straight ()
 261   (defvar bootstrap-version)
 262   (let ((bootstrap-file
 263          (expand-file-name "straight/repos/straight.el/bootstrap.el" user-emacs-directory))
 264         (bootstrap-version 5))
 265     (unless (file-exists-p bootstrap-file)
 266       (with-current-buffer
 267           (url-retrieve-synchronously
 268            "https://raw.githubusercontent.com/raxod502/straight.el/develop/install.el"
 269            'silent 'inhibit-cookies)
 270         (goto-char (point-max))
 271         (eval-print-last-sexp)))
 272     (load bootstrap-file nil 'nomessage)))
 273
 274 ;; Solid rocket booster ignition...
 275
 276 (defun a/build-init ()
 277   (a/bootstrap-straight)
 278   (byte-compile-file "init.el"))
 279
 280 (a/bootstrap-straight)
 281
 282 ;; We have lift off!
 283
 284 (setq straight-use-package-by-default t)
 285 #+end_src
 286
 287 Since we enable =straight.el='s =straight-use-package-by-default=
 288 integration, we will define a =use-feature= for plain ole
 289 =use-package= without any of the =straight.el= stuff.
 290
 291 #+begin_src emacs-lisp
 292 (defmacro use-feature (name &rest args)
 293   "Like `use-package', but with `straight-use-package-by-default' disabled."
 294   (declare (indent defun))
 295   `(use-package ,name
 296      :straight nil
 297      ,@args))
 298 #+end_src
 299
 300 *** =use-package=
 301
 302 #+begin_quote
 303 A use-package declaration for simplifying your .emacs
 304 #+end_quote
 305
 306 [[https://github.com/jwiegley/use-package][use-package]] is an awesome utility for managing and configuring
 307 packages (in our case especially the latter) in a neatly organized way
 308 and without compromising on performance.
 309
 310 #+begin_src emacs-lisp
 311 (straight-use-package 'use-package)
 312 (if nil                             ; set to t when need to debug init
 313     (progn
 314       (setq use-package-verbose t
 315             use-package-expand-minimally nil
 316             use-package-compute-statistics t
 317             debug-on-error t)
 318       (require 'use-package))
 319   (setq use-package-verbose nil
 320         use-package-expand-minimally t))
 321
 322 (setq use-package-always-defer t)
 323 #+end_src
 324
 325 *** Epkg
 326
 327 #+begin_quote
 328 Browse the Emacsmirror package database
 329 #+end_quote
 330
 331 Epkg provides access to a local copy of the [[https://emacsmirror.net][Emacsmirror]] package
 332 database, low-level functions for querying the database, and a
 333 =package.el=-like user interface for browsing the available packages.
 334
 335 #+begin_src emacs-lisp
 336 (require 'bind-key)
 337 (use-package epkg
 338   :commands (epkg-list-packages epkg-describe-package)
 339   :bind
 340   (("C-c p e d" . epkg-describe-package)
 341    ("C-c p e p" . epkg-list-packages))
 342   :config
 343   (setq epkg-repository "~/.emacs.d/straight/repos/epkgs/")
 344   (eval-when-compile (defvar ivy-initial-inputs-alist))
 345   (with-eval-after-load 'ivy
 346     (add-to-list
 347      'ivy-initial-inputs-alist '(epkg-describe-package . "^") t)))
 348 #+end_src
 349
 350 ** No littering in =~/.emacs.d=
 351
 352 #+begin_quote
 353 Help keeping ~/.emacs.d clean
 354 #+end_quote
 355
 356 By default, even for Emacs' built-in packages, the configuration files
 357 and persistent data are all over the place. Use =no-littering= to help
 358 contain the mess.
 359
 360 #+begin_src emacs-lisp
 361 (use-package no-littering
 362   :demand t
 363   :config
 364   (savehist-mode 1)
 365   (add-to-list 'savehist-additional-variables 'kill-ring)
 366   (save-place-mode 1)
 367   (setq auto-save-file-name-transforms
 368         `((".*" ,(no-littering-expand-var-file-name "auto-save/") t))))
 369 #+end_src
 370
 371 ** Custom file (=custom.el=)
 372
 373 I'm not planning on using the custom file much, but even so, I
 374 definitely don't want it mixing with =init.el=. So, here; let's give
 375 it it's own file. While at it, treat themes as safe.
 376
 377 #+begin_src emacs-lisp
 378 (use-feature custom
 379   :no-require t
 380   :config
 381   (setq custom-file (no-littering-expand-etc-file-name "custom.el"))
 382   (when (file-exists-p custom-file)
 383     (load custom-file))
 384   (setf custom-safe-themes t))
 385 #+end_src
 386
 387 ** Secrets file
 388
 389 Load the secrets file if it exists, otherwise show a warning.
 390
 391 #+begin_src emacs-lisp
 392 (with-demoted-errors
 393     (load (no-littering-expand-etc-file-name "secrets")))
 394 #+end_src
 395
 396 ** Better =$PATH= handling
 397
 398 Let's use [[https://github.com/purcell/exec-path-from-shell][exec-path-from-shell]] to make Emacs use the =$PATH= as set up
 399 in my shell.
 400
 401 #+begin_src emacs-lisp
 402 (use-package exec-path-from-shell
 403   :defer 1
 404   :init
 405   (setq exec-path-from-shell-arguments           nil
 406         exec-path-from-shell-check-startup-files nil)
 407   :config
 408   (exec-path-from-shell-initialize)
 409   ;; while we're at it, let's fix access to our running ssh-agent
 410   (exec-path-from-shell-copy-env "SSH_AGENT_PID")
 411   (exec-path-from-shell-copy-env "SSH_AUTH_SOCK"))
 412 #+end_src
 413
 414 ** COMMENT Only one custom theme at a time
 415
 416 #+begin_src emacs-lisp
 417 (defadvice load-theme (before clear-previous-themes activate)
 418   "Clear existing theme settings instead of layering them"
 419   (mapc #'disable-theme custom-enabled-themes))
 420 #+end_src
 421
 422 ** Server
 423
 424 Start server if not already running. Alternatively, can be done by
 425 issuing =emacs --daemon= in the terminal, which can be automated with
 426 a systemd service or using =brew services start emacs= on macOS. I use
 427 Emacs as my window manager (via EXWM), so I always start Emacs on
 428 login; so starting the server from inside Emacs is good enough for me.
 429
 430 See [[https://www.gnu.org/software/emacs/manual/html_node/emacs/Emacs-Server.html#Emacs-Server][Using Emacs as a Server]].
 431
 432 #+begin_src emacs-lisp
 433 (use-feature server
 434   :defer 1
 435   :config (or (server-running-p) (server-mode)))
 436 #+end_src
 437
 438 ** COMMENT Unicode support
 439
 440 Font stack with better unicode support, around =Ubuntu Mono= and
 441 =Hack=.
 442
 443 #+begin_src emacs-lisp
 444 (dolist (ft (fontset-list))
 445   (set-fontset-font
 446    ft
 447    'unicode
 448    (font-spec :name "Source Code Pro" :size 14))
 449   (set-fontset-font
 450    ft
 451    'unicode
 452    (font-spec :name "DejaVu Sans Mono")
 453    nil
 454    'append)
 455   ;; (set-fontset-font
 456   ;;  ft
 457   ;;  'unicode
 458   ;;  (font-spec
 459   ;;   :name "Symbola monospacified for DejaVu Sans Mono")
 460   ;;  nil
 461   ;;  'append)
 462   ;; (set-fontset-font
 463   ;;  ft
 464   ;;  #x2115  ; ℕ
 465   ;;  (font-spec :name "DejaVu Sans Mono")
 466   ;;  nil
 467   ;;  'append)
 468   (set-fontset-font
 469    ft
 470    (cons ?Α ?ω)
 471    (font-spec :name "DejaVu Sans Mono" :size 14)
 472    nil
 473    'prepend))
 474 #+end_src
 475
 476 ** Gentler font resizing
 477
 478 #+begin_src emacs-lisp
 479 (setq text-scale-mode-step 1.05)
 480 #+end_src
 481
 482 ** Focus follows mouse
 483
 484 I’d like focus to follow the mouse when I move the cursor from one
 485 window to the next.
 486
 487 #+begin_src emacs-lisp
 488 (setq mouse-autoselect-window t)
 489 #+end_src
 490
 491 Let’s define a function to conveniently disable this for certain
 492 buffers and/or modes.
 493
 494 #+begin_src emacs-lisp
 495 (defun a/no-mouse-autoselect-window ()
 496   (make-local-variable 'mouse-autoselect-window)
 497   (setq mouse-autoselect-window nil))
 498 #+end_src
 499
 500 ** Better scrolling (arguably)
 501
 502 #+begin_src emacs-lisp
 503 (setq ;; scroll-margin 1
 504       ;; scroll-conservatively 10000
 505       scroll-step 1
 506       scroll-conservatively 10
 507       scroll-preserve-screen-position 1)
 508
 509 (use-feature mwheel
 510   :defer 1
 511   :config
 512   (setq mouse-wheel-scroll-amount '(1 ((shift) . 1)) ; one line at a time
 513         mouse-wheel-progressive-speed nil            ; don't accelerate scrolling
 514         mouse-wheel-follow-mouse t))                 ; scroll window under mouse
 515
 516 (use-feature pixel-scroll
 517   :defer 1
 518   :config (pixel-scroll-mode 1))
 519 #+end_src
 520
 521 ** Ask for GPG passphrase in minibuffer
 522
 523 #+begin_src emacs-lisp
 524 (setq epg-pinentry-mode 'loopback)
 525 #+end_src
 526
 527 ** Libraries
 528
 529 #+begin_src emacs-lisp
 530 (require 'cl-lib)
 531 (require 'subr-x)
 532 #+end_src
 533
 534 ** Useful utilities
 535
 536 Convenience macro for =setq='ing multiple variables to the same value:
 537
 538 #+begin_src emacs-lisp
 539 (defmacro a/setq-every (value &rest vars)
 540   "Set all the variables from VARS to value VALUE."
 541   (declare (indent defun) (debug t))
 542   `(progn ,@(mapcar (lambda (x) (list 'setq x value)) vars)))
 543 #+end_src
 544
 545 The following process-related stuff from [[https://github.com/alezost/emacs-config][alezost's emacs-config]].
 546
 547 #+begin_src emacs-lisp
 548 (defun a/start-process (program &rest args)
 549   "Same as `start-process', but doesn't bother about name and buffer."
 550   (let ((process-name (concat program "_process"))
 551         (buffer-name  (generate-new-buffer-name
 552                        (concat program "_output"))))
 553     (apply #'start-process
 554            process-name buffer-name program args)))
 555
 556 (defun a/dired-start-process (program &optional args)
 557   "Open current file with a PROGRAM."
 558   ;; Shell command looks like this: "program [ARGS]... FILE" (ARGS can
 559   ;; be nil, so remove it).
 560   (apply #'a/start-process
 561          program
 562          (remove nil (list args (dired-get-file-for-visit)))))
 563 #+end_src
 564
 565 * Core
 566 :PROPERTIES:
 567 :CUSTOM_ID: core
 568 :END:
 569
 570 ** Defaults
 571
 572 *** Time and battery in mode-line
 573
 574 Enable displaying time and battery in the mode-line, since I'm not
 575 using the Xfce panel anymore. Also, I don't need to see the load
 576 average on a regular basis, so disable that.
 577
 578 Note: using =i3status= on sway at the moment, so disabling this.
 579
 580 #+begin_src emacs-lisp :tangle no
 581 (use-package time
 582   :init
 583   (setq display-time-default-load-average nil)
 584   :config
 585   (display-time-mode))
 586
 587 (use-package battery
 588   :config
 589   (display-battery-mode))
 590 #+end_src
 591
 592 *** Smaller fringe
 593
 594 Might want to set the fringe to a smaller value, especially if using
 595 EXWM. I'm fine with the default for now.
 596
 597 #+begin_src emacs-lisp
 598 ;; (fringe-mode '(3 . 1))
 599 (fringe-mode nil)
 600 #+end_src
 601
 602 *** Disable disabled commands
 603
 604 Emacs disables some commands by default that could persumably be
 605 confusing for novice users. Let's disable that.
 606
 607 #+begin_src emacs-lisp
 608 (setq disabled-command-function nil)
 609 #+end_src
 610
 611 *** Kill-ring
 612
 613 Save what I copy into clipboard from other applications into Emacs'
 614 kill-ring, which would allow me to still be able to easily access it
 615 in case I kill (cut or copy) something else inside Emacs before
 616 yanking (pasting) what I'd originally intended to.
 617
 618 #+begin_src emacs-lisp
 619 (setq save-interprogram-paste-before-kill t)
 620 #+end_src
 621
 622 *** Minibuffer
 623
 624 #+begin_src emacs-lisp
 625 (setq enable-recursive-minibuffers t
 626       resize-mini-windows t)
 627 #+end_src
 628
 629 *** Lazy-person-friendly yes/no prompts
 630
 631 Lazy people would prefer to type fewer keystrokes, especially for yes
 632 or no questions. I'm lazy.
 633
 634 #+begin_src emacs-lisp
 635 (defalias 'yes-or-no-p #'y-or-n-p)
 636 #+end_src
 637
 638 *** Startup screen and =*scratch*=
 639
 640 Firstly, let Emacs know that I'd like to have =*scratch*= as my
 641 startup buffer.
 642
 643 #+begin_src emacs-lisp
 644 (setq initial-buffer-choice t)
 645 #+end_src
 646
 647 Now let's customize the =*scratch*= buffer a bit. First off, I don't
 648 need the default hint.
 649
 650 #+begin_src emacs-lisp
 651 (setq initial-scratch-message nil)
 652 #+end_src
 653
 654 Also, let's use Text mode as the major mode, in case I want to
 655 customize it (=*scratch*='s default major mode, Fundamental mode,
 656 can't really be customized).
 657
 658 #+begin_src emacs-lisp
 659 (setq initial-major-mode 'text-mode)
 660 #+end_src
 661
 662 Inhibit the buffer list when more than 2 files are loaded.
 663
 664 #+begin_src emacs-lisp
 665 (setq inhibit-startup-buffer-menu t)
 666 #+end_src
 667
 668 I don't really need to see the startup screen or echo area message
 669 either.
 670
 671 #+begin_src emacs-lisp
 672 (advice-add #'display-startup-echo-area-message :override #'ignore)
 673 (setq inhibit-startup-screen t
 674       inhibit-startup-echo-area-message user-login-name)
 675 #+end_src
 676
 677 *** More useful frame titles
 678
 679 Show either the file name or the buffer name (in case the buffer isn't
 680 visiting a file). Borrowed from Emacs Prelude.
 681
 682 #+begin_src emacs-lisp
 683 (setq frame-title-format
 684       '("" invocation-name " - "
 685         (:eval (if (buffer-file-name)
 686                    (abbreviate-file-name (buffer-file-name))
 687                  "%b"))))
 688 #+end_src
 689
 690 *** Backups
 691
 692 Emacs' default backup settings aren't that great. Let's use more
 693 sensible options. See documentation for the ~make-backup-file~
 694 variable.
 695
 696 #+begin_src emacs-lisp
 697 (setq backup-by-copying t
 698       version-control t
 699       delete-old-versions t)
 700 #+end_src
 701
 702 *** Auto revert
 703
 704 Enable automatic reloading of changed buffers and files.
 705
 706 #+begin_src emacs-lisp
 707 (global-auto-revert-mode 1)
 708 (setq auto-revert-verbose nil
 709       global-auto-revert-non-file-buffers nil)
 710 #+end_src
 711
 712 *** Always use space for indentation
 713
 714 #+begin_src emacs-lisp
 715 (setq-default
 716  indent-tabs-mode nil
 717  require-final-newline t
 718  tab-width 4)
 719 #+end_src
 720
 721 *** Winner mode
 722
 723 Enable =winner-mode=.
 724
 725 #+begin_src emacs-lisp
 726 (winner-mode 1)
 727 #+end_src
 728
 729 *** Don’t display =*compilation*= on success
 730
 731 Based on https://stackoverflow.com/a/17788551, with changes to use
 732 =cl-letf= instead of the now obsolete =flet=.
 733
 734 #+begin_src emacs-lisp
 735 (with-eval-after-load 'compile
 736   (defun a/compilation-finish-function (buffer outstr)
 737     (unless (string-match "finished" outstr)
 738       (switch-to-buffer-other-window buffer))
 739     t)
 740
 741   (setq compilation-finish-functions #'a/compilation-finish-function)
 742
 743   (require 'cl-macs)
 744
 745   (defadvice compilation-start
 746       (around inhibit-display
 747               (command &optional mode name-function highlight-regexp))
 748     (if (not (string-match "^\\(find\\|grep\\)" command))
 749         (cl-letf (((symbol-function 'display-buffer) #'ignore))
 750           (save-window-excursion ad-do-it))
 751       ad-do-it))
 752   (ad-activate 'compilation-start))
 753 #+end_src
 754
 755 *** Search for non-ASCII characters
 756
 757 I’d like non-ASCII characters such as ‘’“”«»‹›áⓐ𝒶 to be selected when
 758 I search for their ASCII counterpart.  Shoutout to [[http://endlessparentheses.com/new-in-emacs-25-1-easily-search-non-ascii-characters.html][endlessparentheses]]
 759 for this.
 760
 761 #+begin_src emacs-lisp
 762 (setq search-default-mode #'char-fold-to-regexp)
 763
 764 ;; uncomment to extend this behaviour to query-replace
 765 ;; (setq replace-char-fold t)
 766 #+end_src
 767
 768 *** Cursor shape
 769
 770 #+begin_src emacs-lisp
 771 (setq-default cursor-type 'bar)
 772 #+end_src
 773
 774 *** Allow scrolling in Isearch
 775
 776 #+begin_src emacs-lisp
 777 (setq isearch-allow-scroll t)
 778 #+end_src
 779
 780 ** Bindings
 781
 782 Some bindings for functions from built-in GNU Emacs packages:
 783
 784 #+begin_src emacs-lisp
 785 (bind-keys
 786  ("C-c a i" . ielm)
 787
 788  ("C-c e b" . eval-buffer)
 789  ("C-c e r" . eval-region)
 790
 791  ("C-c e i" . emacs-init-time)
 792  ("C-c e u" . emacs-uptime)
 793
 794  ("C-c F m" . make-frame-command)
 795  ("C-c F d" . delete-frame)
 796  ("C-c F D" . delete-other-frames)
 797
 798  ("C-c o"   . other-window)
 799
 800  ("C-S-h C" . describe-char)
 801  ("C-S-h F" . describe-face)
 802
 803  ("C-x k"   . kill-this-buffer)
 804  ("C-x K"   . kill-buffer)
 805
 806  ("s-p"     . beginning-of-buffer)
 807  ("s-n"     . end-of-buffer))
 808
 809 (when (display-graphic-p)
 810   (unbind-key "C-z" global-map))
 811 #+end_src
 812
 813 While at it, let's bind a few for some =straight-*= functions too:
 814
 815 #+begin_src emacs-lisp
 816 (bind-keys
 817  :prefix-map a/straight-prefix-map
 818  :prefix "C-c p s"
 819  ("u" . straight-use-package)
 820  ("f" . straight-freeze-versions)
 821  ("t" . straight-thaw-versions)
 822  ("P" . straight-prune-build)
 823  ("r" . straight-get-recipe)
 824  ;; M-x ^straight-.*-all$
 825  ("a c" . straight-check-all)
 826  ("a f" . straight-fetch-all)
 827  ("a m" . straight-merge-all)
 828  ("a n" . straight-normalize-all)
 829  ("a F" . straight-pull-all)
 830  ("a P" . straight-push-all)
 831  ("a r" . straight-rebuild-all)
 832  ;; M-x ^straight-.*-package$
 833  ("p c" . straight-check-package)
 834  ("p f" . straight-fetch-package)
 835  ("p m" . straight-merge-package)
 836  ("p n" . straight-normalize-package)
 837  ("p F" . straight-pull-package)
 838  ("p P" . straight-push-package)
 839  ("p r" . straight-rebuild-package))
 840 #+end_src
 841
 842 ** Packages
 843
 844 The packages in this section are absolutely essential to my everyday
 845 workflow, and they play key roles in how I do my computing. They
 846 immensely enhance the Emacs experience for me; both using Emacs, and
 847 customizing it.
 848
 849 *** [[https://github.com/emacscollective/auto-compile][auto-compile]]
 850
 851 #+begin_src emacs-lisp
 852 (use-package auto-compile
 853   :demand t
 854   :config
 855   (auto-compile-on-load-mode)
 856   (auto-compile-on-save-mode)
 857   (setq auto-compile-display-buffer               nil
 858         auto-compile-mode-line-counter            t
 859         auto-compile-source-recreate-deletes-dest t
 860         auto-compile-toggle-deletes-nonlib-dest   t
 861         auto-compile-update-autoloads             t)
 862   (add-hook 'auto-compile-inhibit-compile-hook
 863             'auto-compile-inhibit-compile-detached-git-head))
 864 #+end_src
 865
 866 *** [[https://orgmode.org/][Org]]
 867
 868 #+begin_quote
 869 Org mode is for keeping notes, maintaining TODO lists, planning
 870 projects, and authoring documents with a fast and effective plain-text
 871 system.
 872 #+end_quote
 873
 874 In short, my favourite way of life.
 875
 876 First, we have to resort to a [[https://github.com/raxod502/straight.el#installing-org-with-straightel][hack]] to be able to use the correct
 877 latest version of Org from upstream.
 878
 879 #+begin_src emacs-lisp
 880   (use-package git)
 881
 882   (defun org-git-version ()
 883     "The Git version of org-mode.
 884   Inserted by installing org-mode or when a release is made."
 885     (require 'git)
 886     (let ((git-repo (expand-file-name
 887                      "straight/repos/org/" user-emacs-directory)))
 888       (string-trim
 889        (git-run "describe"
 890                 "--match=release\*"
 891                 "--abbrev=6"
 892                 "HEAD"))))
 893
 894   (defun org-release ()
 895     "The release version of org-mode.
 896   Inserted by installing org-mode or when a release is made."
 897     (require 'git)
 898     (let ((git-repo (expand-file-name
 899                      "straight/repos/org/" user-emacs-directory)))
 900       (string-trim
 901        (string-remove-prefix
 902         "release_"
 903         (git-run "describe"
 904                  "--match=release\*"
 905                  "--abbrev=0"
 906                  "HEAD")))))
 907
 908 (provide 'org-version)
 909 #+end_src
 910
 911 We will use the =org-plus-contrib= package to get the whole deal:
 912
 913 #+begin_src emacs-lisp
 914 (straight-use-package 'org-plus-contrib)
 915 #+end_src
 916
 917 And here's where my actual Org configurations begin:
 918
 919 #+begin_src emacs-lisp
 920 (use-feature org
 921   :defer 2
 922   :config
 923   (setq org-src-tab-acts-natively t
 924         org-src-preserve-indentation nil
 925         org-edit-src-content-indentation 0
 926         org-email-link-description-format "Email %c: %s" ; %.30s
 927         org-highlight-latex-and-related '(entities)
 928         org-use-speed-commands t
 929         org-startup-folded 'content
 930         org-catch-invisible-edits 'show-and-error
 931         org-log-done 'time)
 932   (add-to-list 'org-structure-template-alist '("L" . "src emacs-lisp") t)
 933   :bind (:map org-mode-map ("M-L" . org-insert-last-stored-link))
 934   :hook ((org-mode . org-indent-mode)
 935          (org-mode . auto-fill-mode)
 936          (org-mode . flyspell-mode))
 937   :custom
 938   (org-latex-packages-alist '(("" "listings") ("" "color")))
 939   :custom-face
 940   '(org-block-begin-line ((t (:foreground "#5a5b5a" :background "#1d1f21"))))
 941   '(org-block ((t (:background "#1d1f21"))))
 942   '(org-latex-and-related ((t (:foreground "#b294bb")))))
 943
 944 (use-feature ox-latex
 945   :after ox
 946   :config
 947   (setq org-latex-listings 'listings
 948         ;; org-latex-prefer-user-labels t
 949         )
 950   (add-to-list 'org-latex-classes
 951                '("IEEEtran" "\\documentclass[11pt]{IEEEtran}"
 952                  ("\\section{%s}"       . "\\section*{%s}")
 953                  ("\\subsection{%s}"    . "\\subsection*{%s}")
 954                  ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
 955                  ("\\paragraph{%s}"     . "\\paragraph*{%s}")
 956                  ("\\subparagraph{%s}"  . "\\subparagraph*{%s}"))
 957                t)
 958   (require 'ox-beamer))
 959 #+end_src
 960
 961 **** asynchronous tangle
 962
 963 =a/async-babel-tangle= is a function closely inspired by [[https://github.com/dieggsy/dotfiles/tree/cc10edf7701958eff1cd94d4081da544d882a28c/emacs.d#dotfiles][dieggsy's
 964 d/async-babel-tangle]] which uses [[https://github.com/jwiegley/emacs-async][async]] to asynchronously tangle an org
 965 file.
 966
 967 #+begin_src emacs-lisp
 968 (with-eval-after-load 'org
 969   (defvar a/show-async-tangle-results nil
 970     "Keep *emacs* async buffers around for later inspection.")
 971
 972   (defvar a/show-async-tangle-time nil
 973     "Show the time spent tangling the file.")
 974
 975   (defvar a/async-tangle-post-compile
 976     (when a/byte-compiled-init "make build-init")
 977     "If non-nil, pass to `compile' after successful tangle.")
 978
 979   ;; TODO: look into why directly byte-compiling init.el causes a
 980   ;; number of problems, including magit-status not loading (busy
 981   ;; waiting).
 982   (defvar a/async-tangle-byte-recompile nil
 983     "If non-nil, byte-recompile the file on successful tangle.")
 984
 985   (defun a/async-babel-tangle ()
 986     "Tangle org file asynchronously."
 987     (interactive)
 988     (let* ((file-tangle-start-time (current-time))
 989            (file (buffer-file-name))
 990            (file-nodir (file-name-nondirectory file))
 991            ;; (async-quiet-switch "-q")
 992            (file-noext (file-name-sans-extension file)))
 993       (async-start
 994        `(lambda ()
 995           (require 'org)
 996           (org-babel-tangle-file ,file))
 997        (unless a/show-async-tangle-results
 998          `(lambda (result)
 999             (if result
1000                 (progn
1001                   ;; (setq byte-compile-warnings '(not noruntime unresolved))
1002                   (message "Tangled %s%s"
1003                            ,file-nodir
1004                            (if a/show-async-tangle-time
1005                                (format " (%.3fs)"
1006                                        (float-time (time-subtract (current-time)
1007                                                                   ',file-tangle-start-time)))
1008                              ""))
1009                   (when a/async-tangle-post-compile
1010                     (compile a/async-tangle-post-compile))
1011                   (when a/async-tangle-byte-recompile
1012                     (byte-recompile-file (concat ,file-noext ".el"))))
1013               (message "Tangling %s failed" ,file-nodir))))))))
1014
1015 (add-to-list
1016  'safe-local-variable-values
1017  '(eval add-hook 'after-save-hook #'a/async-babel-tangle 'append 'local))
1018 #+end_src
1019
1020 *** [[https://magit.vc/][Magit]]
1021
1022 #+begin_quote
1023 It's Magit! A Git porcelain inside Emacs.
1024 #+end_quote
1025
1026 Not just how I do git, but /the/ way to do git.
1027
1028 #+begin_src emacs-lisp
1029 (use-package magit
1030   :defer 2
1031   :bind (("C-x g" . magit-status)
1032          ("s-g s" . magit-status)
1033          ("s-g l" . magit-log-buffer-file))
1034   :config
1035   (magit-add-section-hook 'magit-status-sections-hook
1036                           'magit-insert-modules
1037                           'magit-insert-stashes
1038                           'append)
1039   (setq
1040    magit-repository-directories '(("~/.emacs.d/" . 0)
1041                                   ("~/src/git/" . 1)))
1042   (nconc magit-section-initial-visibility-alist
1043          '(([unpulled status] . show)
1044            ([unpushed status] . show)))
1045   :custom-face (magit-diff-file-heading ((t (:weight normal)))))
1046 #+end_src
1047
1048 *** recentf
1049
1050 Recently opened files.
1051
1052 #+begin_src emacs-lisp
1053 (use-feature recentf
1054   :defer 0.5
1055   :config
1056   (add-to-list 'recentf-exclude "^/\\(?:ssh\\|su\\|sudo\\)?:")
1057   (setq recentf-max-saved-items 40))
1058 #+end_src
1059
1060 *** smex
1061
1062 #+begin_quote
1063 A smart M-x enhancement for Emacs.
1064 #+end_quote
1065
1066 Mostly because =counsel= needs it to remember history.
1067
1068 #+begin_src emacs-lisp
1069 (use-package smex)
1070 #+end_src
1071
1072 *** [[https://github.com/abo-abo/swiper][Ivy]] (and friends)
1073
1074 #+begin_quote
1075 Ivy - a generic completion frontend for Emacs, Swiper - isearch with
1076 an overview, and more. Oh, man!
1077 #+end_quote
1078
1079 There's no way I could top that, so I won't attempt to.
1080
1081 **** Ivy
1082
1083 #+begin_src emacs-lisp
1084 (use-package ivy
1085   :defer 0.6
1086   :bind
1087   (:map ivy-minibuffer-map
1088    ([escape] . keyboard-escape-quit)
1089    ([S-up]   . ivy-previous-history-element)
1090    ([S-down] . ivy-next-history-element)
1091    ("DEL"    . ivy-backward-delete-char))
1092   :config
1093   (setq ivy-wrap t)
1094   (ivy-mode 1)
1095   ;; :custom-face
1096   ;; (ivy-minibuffer-match-face-2 ((t (:background "#e99ce8" :weight semi-bold))))
1097   ;; (ivy-minibuffer-match-face-3 ((t (:background "#bbbbff" :weight semi-bold))))
1098   ;; (ivy-minibuffer-match-face-4 ((t (:background "#ffbbff" :weight semi-bold))))
1099 )
1100 #+end_src
1101
1102 **** Swiper
1103
1104 #+begin_src emacs-lisp
1105 (use-package swiper
1106   :after ivy
1107   :bind (("C-s"   . swiper)
1108          ("C-r"   . swiper)
1109          ("C-S-s" . isearch-forward)))
1110 #+end_src
1111
1112 **** Counsel
1113
1114 #+begin_src emacs-lisp
1115 (use-package counsel
1116   :after ivy
1117   :bind (([remap execute-extended-command] . counsel-M-x)
1118          ([remap find-file]                . counsel-find-file)
1119          ("s-r"                            . counsel-recentf)
1120          ("C-c x"                          . counsel-M-x)
1121          ("C-c f ."                        . counsel-find-file)
1122          :map minibuffer-local-map
1123          ("C-r" . counsel-minibuffer-history))
1124   :config
1125   (counsel-mode 1)
1126   (defalias 'locate #'counsel-locate))
1127 #+end_src
1128
1129 *** eshell
1130
1131 #+begin_src emacs-lisp
1132 (use-feature eshell
1133   :defer 2
1134   :commands eshell
1135   :bind ("C-c a s e" . eshell)
1136   :config
1137   (eval-when-compile (defvar eshell-prompt-regexp))
1138   (defun a/eshell-quit-or-delete-char (arg)
1139     (interactive "p")
1140     (if (and (eolp) (looking-back eshell-prompt-regexp nil))
1141         (eshell-life-is-too-much)
1142       (delete-char arg)))
1143
1144   (defun a/eshell-clear ()
1145     (interactive)
1146     (let ((inhibit-read-only t))
1147       (erase-buffer))
1148     (eshell-send-input))
1149
1150   (defun a/eshell-setup ()
1151     (make-local-variable 'company-idle-delay)
1152     (defvar company-idle-delay)
1153     (setq company-idle-delay nil)
1154     (bind-keys :map eshell-mode-map
1155                ("C-d"   . a/eshell-quit-or-delete-char)
1156                ("C-S-l" . a/eshell-clear)
1157                ("M-r"   . counsel-esh-history)
1158                ([tab]   . company-complete)))
1159
1160   :hook (eshell-mode . a/eshell-setup)
1161   :custom
1162   (eshell-hist-ignoredups t)
1163   (eshell-input-filter 'eshell-input-filter-initial-space))
1164 #+end_src
1165
1166 *** Ibuffer
1167
1168 #+begin_src emacs-lisp
1169 (use-feature ibuffer
1170   :bind
1171   (("C-x C-b" . ibuffer-other-window)
1172    :map ibuffer-mode-map
1173    ("P"   . ibuffer-backward-filter-group)
1174    ("N"   . ibuffer-forward-filter-group)
1175    ("M-p" . ibuffer-do-print)
1176    ("M-n" . ibuffer-do-shell-command-pipe-replace))
1177   :config
1178   ;; Use human readable Size column instead of original one
1179   (define-ibuffer-column size-h
1180     (:name "Size" :inline t)
1181     (cond
1182      ((> (buffer-size) 1000000) (format "%7.1fM" (/ (buffer-size) 1000000.0)))
1183      ((> (buffer-size) 100000) (format "%7.0fk" (/ (buffer-size) 1000.0)))
1184      ((> (buffer-size) 1000) (format "%7.1fk" (/ (buffer-size) 1000.0)))
1185      (t (format "%8d" (buffer-size)))))
1186   :custom
1187   (ibuffer-saved-filter-groups
1188    '(("default"
1189       ("dired" (mode . dired-mode))
1190       ("org"   (mode . org-mode))
1191       ("gnus"
1192        (or
1193         (mode . gnus-group-mode)
1194         (mode . gnus-summary-mode)
1195         (mode . gnus-article-mode)
1196         ;; not really, but...
1197         (mode . message-mode)))
1198       ("web"
1199        (or
1200         (mode . web-mode)
1201         (mode . css-mode)
1202         (mode . scss-mode)
1203         (mode . js2-mode)))
1204       ("shell"
1205        (or
1206         (mode . eshell-mode)
1207         (mode . shell-mode)
1208         (mode . term-mode)))
1209       ("programming"
1210        (or
1211         (mode . python-mode)
1212         (mode . c-mode)
1213         (mode . c++-mode)
1214         (mode . java-mode)
1215         (mode . emacs-lisp-mode)
1216         (mode . scheme-mode)
1217         (mode . haskell-mode)
1218         (mode . lean-mode)))
1219       ("emacs"
1220        (or
1221         (name . "^\\*scratch\\*$")
1222         (name . "^\\*Messages\\*$")))
1223       ("erc" (mode . erc-mode)))))
1224   (ibuffer-formats
1225    '((mark modified read-only locked " "
1226            (name 18 18 :left :elide)
1227            " "
1228            (size-h 9 -1 :right)
1229            " "
1230            (mode 16 16 :left :elide)
1231            " " filename-and-process)
1232      (mark " "
1233            (name 16 -1)
1234            " " filename)))
1235   :hook (ibuffer . (lambda () (ibuffer-switch-to-saved-filter-groups "default"))))
1236 #+end_src
1237
1238 *** Outline
1239
1240 #+begin_src emacs-lisp
1241 (use-feature outline
1242   :hook (prog-mode . outline-minor-mode)
1243   :bind
1244   (:map
1245    outline-minor-mode-map
1246    ("<s-tab>"  . outline-toggle-children)
1247    ("M-p"      . outline-previous-visible-heading)
1248    ("M-n"      . outline-next-visible-heading)
1249    :prefix-map a/outline-prefix-map
1250    :prefix "s-o"
1251    ("TAB" . outline-toggle-children)
1252    ("a"   . outline-hide-body)
1253    ("H"   . outline-hide-body)
1254    ("S"   . outline-show-all)
1255    ("h"   . outline-hide-subtree)
1256    ("s"   . outline-show-subtree)))
1257 #+end_src
1258
1259 *** Dired
1260
1261 #+begin_src emacs-lisp
1262 (use-feature ls-lisp
1263   :custom (ls-lisp-dirs-first t))
1264
1265 (use-feature dired
1266   :config
1267   (setq dired-listing-switches "-alh"
1268         ls-lisp-use-insert-directory-program nil)
1269
1270   ;; easily diff 2 marked files
1271   ;; https://oremacs.com/2017/03/18/dired-ediff/
1272   (defun dired-ediff-files ()
1273     (interactive)
1274     (require 'dired-aux)
1275     (defvar ediff-after-quit-hook-internal)
1276     (let ((files (dired-get-marked-files))
1277           (wnd (current-window-configuration)))
1278       (if (<= (length files) 2)
1279           (let ((file1 (car files))
1280                 (file2 (if (cdr files)
1281                            (cadr files)
1282                          (read-file-name
1283                           "file: "
1284                           (dired-dwim-target-directory)))))
1285             (if (file-newer-than-file-p file1 file2)
1286                 (ediff-files file2 file1)
1287               (ediff-files file1 file2))
1288             (add-hook 'ediff-after-quit-hook-internal
1289                       (lambda ()
1290                         (setq ediff-after-quit-hook-internal nil)
1291                         (set-window-configuration wnd))))
1292         (error "no more than 2 files should be marked"))))
1293   :bind (:map dired-mode-map
1294               ("b"  . dired-up-directory)
1295               ("e"  . dired-ediff-files)
1296               ("E"  . dired-toggle-read-only)
1297               ("\\" . dired-hide-details-mode)
1298               ("z"  . (lambda ()
1299                         (interactive)
1300                         (a/dired-start-process "zathura"))))
1301   :hook (dired-mode . dired-hide-details-mode))
1302 #+end_src
1303
1304 *** Help
1305
1306 #+begin_src emacs-lisp
1307 (use-feature help
1308   :config
1309   (temp-buffer-resize-mode)
1310   (setq help-window-select t))
1311 #+end_src
1312
1313 *** Tramp
1314
1315 #+begin_src emacs-lisp
1316 (use-feature tramp
1317   :config
1318   (add-to-list 'tramp-default-proxies-alist '(nil "\\`root\\'" "/ssh:%h:"))
1319   (add-to-list 'tramp-default-proxies-alist '("localhost" nil nil))
1320   (add-to-list 'tramp-default-proxies-alist
1321                (list (regexp-quote (system-name)) nil nil)))
1322 #+end_src
1323
1324 *** Dash
1325
1326 #+begin_src emacs-lisp
1327 (use-package dash
1328   :config (dash-enable-font-lock))
1329 #+end_src
1330
1331 * Editing
1332 :PROPERTIES:
1333 :CUSTOM_ID: editing
1334 :END:
1335
1336 ** =diff-hl=
1337
1338 Highlight uncommitted changes in the left fringe.
1339
1340 #+begin_src emacs-lisp
1341 (use-package diff-hl
1342   :config
1343   (setq diff-hl-draw-borders nil)
1344   (global-diff-hl-mode)
1345   :hook (magit-post-refresh . diff-hl-magit-post-refresh))
1346 #+end_src
1347
1348 ** ElDoc
1349
1350 Display Lisp objects at point in the echo area.
1351
1352 #+begin_src emacs-lisp
1353 (use-feature eldoc
1354   :when (version< "25" emacs-version)
1355   :config (global-eldoc-mode))
1356 #+end_src
1357
1358 ** paren
1359
1360 Highlight matching parens.
1361
1362 #+begin_src emacs-lisp
1363 (use-feature paren
1364   :demand
1365   :config (show-paren-mode))
1366 #+end_src
1367
1368 ** simple (for column numbers)
1369
1370 #+begin_src emacs-lisp
1371 (use-feature simple
1372   :config (column-number-mode))
1373 #+end_src
1374
1375 ** =savehist=
1376
1377 Save minibuffer history.
1378
1379 #+begin_src emacs-lisp
1380 (use-feature savehist
1381   :config (savehist-mode))
1382 #+end_src
1383
1384 ** =saveplace=
1385
1386 Automatically save place in each file.
1387
1388 #+begin_src emacs-lisp
1389 (use-feature saveplace
1390   :when (version< "25" emacs-version)
1391   :config (save-place-mode))
1392 #+end_src
1393
1394 ** =prog-mode=
1395
1396 #+begin_src emacs-lisp
1397 (use-feature prog-mode
1398   :config (global-prettify-symbols-mode)
1399   (defun indicate-buffer-boundaries-left ()
1400     (setq indicate-buffer-boundaries 'left))
1401   (add-hook 'prog-mode-hook #'indicate-buffer-boundaries-left))
1402 #+end_src
1403
1404 ** =text-mode=
1405
1406 #+begin_src emacs-lisp
1407 (use-feature text-mode
1408   :hook ((text-mode . indicate-buffer-boundaries-left)
1409          (text-mode . abbrev-mode)))
1410 #+end_src
1411
1412 ** Company
1413
1414 #+begin_src emacs-lisp
1415 (use-package company
1416   :defer 3
1417   :bind
1418   (:map company-active-map
1419         ([tab]    . company-complete-common-or-cycle)
1420         ([escape] . company-abort))
1421   :custom
1422   (company-minimum-prefix-length 1)
1423   (company-selection-wrap-around t)
1424   (company-dabbrev-char-regexp "\\sw\\|\\s_\\|[-_]")
1425   (company-dabbrev-downcase nil)
1426   (company-dabbrev-ignore-case nil)
1427   :config
1428   (global-company-mode t))
1429 #+end_src
1430
1431 ** Flycheck
1432
1433 #+begin_src emacs-lisp
1434 (use-package flycheck
1435   :defer 3
1436   :hook (prog-mode . flycheck-mode)
1437   :bind
1438   (:map flycheck-mode-map
1439         ("M-P" . flycheck-previous-error)
1440         ("M-N" . flycheck-next-error))
1441   :config
1442   ;; Use the load-path from running Emacs when checking elisp files
1443   (setq flycheck-emacs-lisp-load-path 'inherit)
1444
1445   ;; Only flycheck when I actually save the buffer
1446   (setq flycheck-check-syntax-automatically '(mode-enabled save)))
1447
1448 ;; http://endlessparentheses.com/ispell-and-apostrophes.html
1449 (use-package ispell
1450   :defer 3
1451   :config
1452   ;; ’ can be part of a word
1453   (setq ispell-local-dictionary-alist
1454         `((nil "[[:alpha:]]" "[^[:alpha:]]"
1455                "['\x2019]" nil ("-B") nil utf-8)))
1456   ;; don't send ’ to the subprocess
1457   (defun endless/replace-apostrophe (args)
1458     (cons (replace-regexp-in-string
1459            "’" "'" (car args))
1460           (cdr args)))
1461   (advice-add #'ispell-send-string :filter-args
1462               #'endless/replace-apostrophe)
1463
1464   ;; convert ' back to ’ from the subprocess
1465   (defun endless/replace-quote (args)
1466     (if (not (derived-mode-p 'org-mode))
1467         args
1468       (cons (replace-regexp-in-string
1469              "'" "’" (car args))
1470             (cdr args))))
1471   (advice-add #'ispell-parse-output :filter-args
1472               #'endless/replace-quote))
1473 #+end_src
1474
1475 * Programming modes
1476 :PROPERTIES:
1477 :CUSTOM_ID: programming-modes
1478 :END:
1479
1480 ** Lisp
1481
1482 #+begin_src emacs-lisp
1483 (use-feature lisp-mode
1484   :config
1485   (add-hook 'emacs-lisp-mode-hook 'outline-minor-mode)
1486   (add-hook 'emacs-lisp-mode-hook 'reveal-mode)
1487   (defun indent-spaces-mode ()
1488     (setq indent-tabs-mode nil))
1489   (add-hook 'lisp-interaction-mode-hook #'indent-spaces-mode))
1490 #+end_src
1491
1492 ** [[http://alloytools.org][Alloy]] (with [[https://github.com/dwwmmn/alloy-mode][alloy-mode]])
1493
1494 #+begin_src emacs-lisp
1495 (use-package alloy-mode
1496   :straight (:host github :repo "dwwmmn/alloy-mode")
1497   :config (setq alloy-basic-offset 2))
1498 #+end_src
1499
1500 ** [[https://coq.inria.fr][Coq]] (with [[https://github.com/ProofGeneral/PG][Proof General]])
1501
1502 #+begin_src emacs-lisp
1503 (use-package proof-site  ; Proof General
1504   :straight proof-general)
1505 #+end_src
1506
1507 ** [[https://leanprover.github.io][Lean]] (with [[https://github.com/leanprover/lean-mode][lean-mode]])
1508
1509 #+begin_src emacs-lisp
1510 (eval-when-compile (defvar lean-mode-map))
1511 (use-package lean-mode
1512   :defer 1
1513   :bind (:map lean-mode-map
1514               ("S-SPC" . company-complete))
1515   :config
1516   (require 'lean-input)
1517   (setq default-input-method "Lean"
1518         lean-input-tweak-all '(lean-input-compose
1519                                (lean-input-prepend "/")
1520                                (lean-input-nonempty))
1521         lean-input-user-translations '(("/" "/")))
1522   (lean-input-setup))
1523   #+end_src
1524
1525 ** Haskell
1526
1527 *** [[https://github.com/haskell/haskell-mode][haskell-mode]]
1528
1529 #+begin_src emacs-lisp
1530 (use-package haskell-mode
1531   :config
1532   (setq haskell-indentation-layout-offset 4
1533         haskell-indentation-left-offset 4
1534         flycheck-checker 'haskell-hlint
1535         flycheck-disabled-checkers '(haskell-stack-ghc haskell-ghc)))
1536 #+end_src
1537
1538 *** [[https://github.com/jyp/dante][dante]]
1539
1540 #+begin_src emacs-lisp
1541 (use-package dante
1542   :after haskell-mode
1543   :commands dante-mode
1544   :hook (haskell-mode . dante-mode))
1545 #+end_src
1546
1547 *** [[https://github.com/mpickering/hlint-refactor-mode][hlint-refactor]]
1548
1549 Emacs bindings for [[https://github.com/ndmitchell/hlint][hlint]]'s refactor option. This requires the refact
1550 executable from [[https://github.com/mpickering/apply-refact][apply-refact]].
1551
1552 #+begin_src emacs-lisp
1553 (use-package hlint-refactor
1554   :after haskell-mode
1555   :bind (:map hlint-refactor-mode-map
1556               ("C-c l b" . hlint-refactor-refactor-buffer)
1557               ("C-c l r" . hlint-refactor-refactor-at-point))
1558   :hook (haskell-mode . hlint-refactor-mode))
1559 #+end_src
1560
1561 *** [[https://github.com/flycheck/flycheck-haskell][flycheck-haskell]]
1562
1563 #+begin_src emacs-lisp
1564 (use-package flycheck-haskell
1565   :after haskell-mode)
1566 #+end_src
1567
1568 *** [[https://github.com/ndmitchell/hlint/blob/20e116a043f2073c57b17b24ae6364b5e433ba7e/data/hs-lint.el][hs-lint.el]]
1569 :PROPERTIES:
1570 :header-args+: :tangle lisp/hs-lint.el :mkdirp yes
1571 :END:
1572
1573 Currently using =flycheck-haskell= with the =haskell-hlint= checker
1574 instead.
1575
1576 #+begin_src emacs-lisp :tangle no
1577 ;;; hs-lint.el --- minor mode for HLint code checking
1578
1579 ;; Copyright 2009 (C) Alex Ott
1580 ;;
1581 ;; Author: Alex Ott <alexott@gmail.com>
1582 ;; Keywords: haskell, lint, HLint
1583 ;; Requirements:
1584 ;; Status: distributed under terms of GPL2 or above
1585
1586 ;; Typical message from HLint looks like:
1587 ;;
1588 ;; /Users/ott/projects/lang-exp/haskell/test.hs:52:1: Eta reduce
1589 ;; Found:
1590 ;;   count1 p l = length (filter p l)
1591 ;; Why not:
1592 ;;   count1 p = length . filter p
1593
1594
1595 (require 'compile)
1596
1597 (defgroup hs-lint nil
1598   "Run HLint as inferior of Emacs, parse error messages."
1599   :group 'tools
1600   :group 'haskell)
1601
1602 (defcustom hs-lint-command "hlint"
1603   "The default hs-lint command for \\[hlint]."
1604   :type 'string
1605   :group 'hs-lint)
1606
1607 (defcustom hs-lint-save-files t
1608   "Save modified files when run HLint or no (ask user)"
1609   :type 'boolean
1610   :group 'hs-lint)
1611
1612 (defcustom hs-lint-replace-with-suggestions nil
1613   "Replace user's code with suggested replacements"
1614   :type 'boolean
1615   :group 'hs-lint)
1616
1617 (defcustom hs-lint-replace-without-ask nil
1618   "Replace user's code with suggested replacements automatically"
1619   :type 'boolean
1620   :group 'hs-lint)
1621
1622 (defun hs-lint-process-setup ()
1623   "Setup compilation variables and buffer for `hlint'."
1624   (run-hooks 'hs-lint-setup-hook))
1625
1626 ;; regex for replace suggestions
1627 ;;
1628 ;; ^\(.*?\):\([0-9]+\):\([0-9]+\): .*
1629 ;; Found:
1630 ;; \s +\(.*\)
1631 ;; Why not:
1632 ;; \s +\(.*\)
1633
1634 (defvar hs-lint-regex
1635   "^\\(.*?\\):\\([0-9]+\\):\\([0-9]+\\): .*[\n\C-m]Found:[\n\C-m]\\s +\\(.*\\)[\n\C-m]Why not:[\n\C-m]\\s +\\(.*\\)[\n\C-m]"
1636   "Regex for HLint messages")
1637
1638 (defun make-short-string (str maxlen)
1639   (if (< (length str) maxlen)
1640       str
1641     (concat (substring str 0 (- maxlen 3)) "...")))
1642
1643 (defun hs-lint-replace-suggestions ()
1644   "Perform actual replacement of suggestions"
1645   (goto-char (point-min))
1646   (while (re-search-forward hs-lint-regex nil t)
1647     (let* ((fname (match-string 1))
1648           (fline (string-to-number (match-string 2)))
1649           (old-code (match-string 4))
1650           (new-code (match-string 5))
1651           (msg (concat "Replace '" (make-short-string old-code 30)
1652                        "' with '" (make-short-string new-code 30) "'"))
1653           (bline 0)
1654           (eline 0)
1655           (spos 0)
1656           (new-old-code ""))
1657       (save-excursion
1658         (switch-to-buffer (get-file-buffer fname))
1659         (goto-char (point-min))
1660         (forward-line (1- fline))
1661         (beginning-of-line)
1662         (setf bline (point))
1663         (when (or hs-lint-replace-without-ask
1664                   (yes-or-no-p msg))
1665           (end-of-line)
1666           (setf eline (point))
1667           (beginning-of-line)
1668           (setf old-code (regexp-quote old-code))
1669           (while (string-match "\\\\ " old-code spos)
1670             (setf new-old-code (concat new-old-code
1671                                  (substring old-code spos (match-beginning 0))
1672                                  "\\ *"))
1673             (setf spos (match-end 0)))
1674           (setf new-old-code (concat new-old-code (substring old-code spos)))
1675           (remove-text-properties bline eline '(composition nil))
1676           (when (re-search-forward new-old-code eline t)
1677             (replace-match new-code nil t)))))))
1678
1679 (defun hs-lint-finish-hook (buf msg)
1680   "Function, that is executed at the end of HLint execution"
1681   (if hs-lint-replace-with-suggestions
1682       (hs-lint-replace-suggestions)
1683       (next-error 1 t)))
1684
1685 (define-compilation-mode hs-lint-mode "HLint"
1686   "Mode for check Haskell source code."
1687   (set (make-local-variable 'compilation-process-setup-function)
1688        'hs-lint-process-setup)
1689   (set (make-local-variable 'compilation-disable-input) t)
1690   (set (make-local-variable 'compilation-scroll-output) nil)
1691   (set (make-local-variable 'compilation-finish-functions)
1692        (list 'hs-lint-finish-hook))
1693   )
1694
1695 (defun hs-lint ()
1696   "Run HLint for current buffer with haskell source"
1697   (interactive)
1698   (save-some-buffers hs-lint-save-files)
1699   (compilation-start (concat hs-lint-command " \"" buffer-file-name "\"")
1700                      'hs-lint-mode))
1701
1702 (provide 'hs-lint)
1703 ;;; hs-lint.el ends here
1704 #+end_src
1705
1706 #+begin_src emacs-lisp :tangle no
1707 (use-package hs-lint
1708   :load-path "lisp/"
1709   :bind (:map haskell-mode-map
1710               ("C-c l l" . hs-lint)))
1711 #+end_src
1712
1713 ** Web
1714
1715 *** SGML and HTML
1716
1717 #+begin_src emacs-lisp
1718 (use-package sgml-mode
1719   :config
1720   (setq sgml-basic-offset 2))
1721 #+end_src
1722
1723 *** CSS and SCSS
1724
1725 #+begin_src emacs-lisp
1726 (use-package css-mode
1727   :config
1728   (setq css-indent-offset 2))
1729 #+end_src
1730
1731 *** Web mode
1732
1733 #+begin_src emacs-lisp
1734 (use-package web-mode
1735   :mode "\\.html\\'"
1736   :config
1737   (a/setq-every 2
1738     web-mode-code-indent-offset
1739     web-mode-css-indent-offset
1740     web-mode-markup-indent-offset))
1741 #+end_src
1742
1743 *** Emmet mode
1744
1745 #+begin_src emacs-lisp
1746 (use-package emmet-mode
1747   :after (:any web-mode css-mode sgml-mode)
1748   :bind* (("C-)" . emmet-next-edit-point)
1749           ("C-(" . emmet-prev-edit-point))
1750   :config
1751   (unbind-key "C-j" emmet-mode-keymap)
1752   (setq emmet-move-cursor-between-quotes t)
1753   :hook (web-mode css-mode html-mode sgml-mode))
1754 #+end_src
1755
1756 ** Java
1757
1758 *** COMMENT meghanada
1759
1760 #+begin_src emacs-lisp
1761 (use-package meghanada
1762   :bind
1763   (:map meghanada-mode-map
1764         (("C-M-o" . meghanada-optimize-import)
1765          ("C-M-t" . meghanada-import-all)))
1766   :hook (java-mode . meghanada-mode))
1767 #+end_src
1768
1769 *** COMMENT lsp-java
1770
1771 #+begin_comment
1772 dependencies:
1773
1774 ace-window
1775 avy
1776 bui
1777 company-lsp
1778 dap-mode
1779 lsp-java
1780 lsp-mode
1781 lsp-ui
1782 pfuture
1783 tree-mode
1784 treemacs
1785 #+end_comment
1786
1787 #+begin_src emacs-lisp
1788 (use-package treemacs
1789   :config (setq treemacs-never-persist t))
1790
1791 (use-package yasnippet
1792   :config
1793   ;; (yas-global-mode)
1794   )
1795
1796 (use-package lsp-mode
1797   :init (setq lsp-eldoc-render-all nil
1798               lsp-highlight-symbol-at-point nil)
1799   )
1800
1801 (use-package hydra)
1802
1803 (use-package company-lsp
1804   :after  company
1805   :config
1806   (setq company-lsp-cache-candidates t
1807         company-lsp-async t))
1808
1809 (use-package lsp-ui
1810   :config
1811   (setq lsp-ui-sideline-update-mode 'point))
1812
1813 (use-package lsp-java
1814   :config
1815   (add-hook 'java-mode-hook
1816             (lambda ()
1817               (setq-local company-backends (list 'company-lsp))))
1818
1819   (add-hook 'java-mode-hook 'lsp-java-enable)
1820   (add-hook 'java-mode-hook 'flycheck-mode)
1821   (add-hook 'java-mode-hook 'company-mode)
1822   (add-hook 'java-mode-hook 'lsp-ui-mode))
1823
1824 (use-package dap-mode
1825   :after lsp-mode
1826   :config
1827   (dap-mode t)
1828   (dap-ui-mode t))
1829
1830 (use-package dap-java
1831   :after (lsp-java))
1832
1833 (use-package lsp-java-treemacs
1834   :after (treemacs))
1835 #+end_src
1836
1837 *** eclim
1838
1839 #+begin_src emacs-lisp
1840 (use-package eclim
1841   :bind (:map eclim-mode-map ("S-SPC" . company-complete))
1842   :hook ((java-mode . eclim-mode)
1843          (eclim-mode . (lambda ()
1844                          (make-local-variable 'company-idle-delay)
1845                          (defvar company-idle-delay)
1846                          ;; (setq company-idle-delay 0.7)
1847                          (setq company-idle-delay nil))))
1848   :custom
1849   (eclim-auto-save nil)
1850   ;; (eclimd-default-workspace "~/src/eclipse-workspace-exp")
1851   (eclim-executable "~/.p2/pool/plugins/org.eclim_2.8.0/bin/eclim")
1852   (eclim-eclipse-dirs '("~/usr/eclipse/dsl-2018-09/eclipse")))
1853 #+end_src
1854
1855 ** geiser
1856
1857 #+begin_src emacs-lisp
1858 (use-package geiser)
1859
1860 (use-feature geiser-guile
1861   :config
1862   (setq geiser-guile-load-path "~/src/git/guix"))
1863 #+end_src
1864
1865 ** guix
1866
1867 #+begin_src emacs-lisp
1868 (use-package guix)
1869 #+end_src
1870
1871 * Emacs enhancements
1872 :PROPERTIES:
1873 :CUSTOM_ID: emacs-enhancements
1874 :END:
1875
1876 ** man
1877
1878 #+begin_src emacs-lisp
1879 (use-feature man
1880   :config (setq Man-width 80))
1881 #+end_src
1882
1883 ** [[https://github.com/justbur/emacs-which-key][which-key]]
1884
1885 #+begin_quote
1886 Emacs package that displays available keybindings in popup
1887 #+end_quote
1888
1889 #+begin_src emacs-lisp
1890 (use-package which-key
1891   :defer 1
1892   :config
1893   (which-key-add-key-based-replacements
1894     ;; prefixes for global prefixes and minor modes
1895     "C-c @"   "outline"
1896     "C-c !"   "flycheck"
1897     "C-c 8"   "typo"
1898     "C-c 8 -" "typo/dashes"
1899     "C-c 8 <" "typo/left-brackets"
1900     "C-c 8 >" "typo/right-brackets"
1901     "C-x 8"   "unicode"
1902     "C-x a"   "abbrev/expand"
1903     "C-x r"   "rectangle/register/bookmark"
1904     "C-x v"   "version control"
1905     ;; prefixes for my personal bindings
1906     "C-c a"   "applications"
1907     "C-c a e" "erc"
1908     "C-c a s" "shells"
1909     "C-c p"   "package-management"
1910     "C-c p e" "package-management/epkg"
1911     "C-c p s" "straight.el"
1912     "C-c psa" "all"
1913     "C-c psp" "package"
1914     "C-c c"   "compile-and-comments"
1915     "C-c e"   "eval"
1916     "C-c f"   "files"
1917     "C-c F"   "frames"
1918     "C-S-h"   "help(ful)"
1919     "C-c m"   "multiple-cursors"
1920     "C-c P"   "projectile"
1921     "C-c P s" "projectile/search"
1922     "C-c P x" "projectile/execute"
1923     "C-c P 4" "projectile/other-window"
1924     "C-c q"   "boxquote"
1925     "s-g"     "magit"
1926     "s-o"     "outline"
1927     "s-t"     "themes")
1928
1929   ;; prefixes for major modes
1930   (which-key-add-major-mode-key-based-replacements 'message-mode
1931     "C-c f"   "footnote")
1932   (which-key-add-major-mode-key-based-replacements 'org-mode
1933     "C-c C-v" "org-babel")
1934   (which-key-add-major-mode-key-based-replacements 'web-mode
1935     "C-c C-a" "web/attributes"
1936     "C-c C-b" "web/blocks"
1937     "C-c C-d" "web/dom"
1938     "C-c C-e" "web/element"
1939     "C-c C-t" "web/tags")
1940
1941   (which-key-mode)
1942   :custom
1943   (which-key-add-column-padding 5)
1944   (which-key-max-description-length 32))
1945 #+end_src
1946
1947 ** theme
1948
1949 #+begin_src emacs-lisp
1950 (add-to-list 'custom-theme-load-path "~/.emacs.d/lisp")
1951 (load-theme 'tangomod t)
1952 #+end_src
1953
1954 ** smart-mode-line
1955
1956 #+begin_src emacs-lisp
1957 (use-package smart-mode-line
1958   :commands (sml/apply-theme)
1959   :demand
1960   :config
1961   (sml/setup))
1962 #+end_src
1963
1964 ** doom-themes
1965
1966 #+begin_src emacs-lisp
1967 (use-package doom-themes)
1968 #+end_src
1969
1970 ** theme helper functions
1971
1972 #+begin_src emacs-lisp
1973 (defvar a/org-mode-font-lock-keywords
1974   '(("[ \t]*\\(#\\+\\(BEGIN\\|END\\|begin\\|end\\)_\\(\\S-+\\)\\)[ \t]*\\([^\n:]*\\)"
1975       (1 '(:foreground "#5a5b5a" :background "#292b2b") t) ; directive
1976       (3 '(:foreground "#81a2be" :background "#292b2b") t) ; kind
1977       (4 '(:foreground "#c5c8c6") t))))                    ; title
1978
1979 (defun a/lights-on ()
1980   "Enable my favourite light theme."
1981   (interactive)
1982   (mapc #'disable-theme custom-enabled-themes)
1983   (load-theme 'tangomod t)
1984   (sml/apply-theme 'automatic)
1985   (font-lock-remove-keywords
1986    'org-mode a/org-mode-font-lock-keywords))
1987
1988 (defun a/lights-off ()
1989   "Go dark."
1990   (interactive)
1991   (mapc #'disable-theme custom-enabled-themes)
1992   (load-theme 'doom-tomorrow-night t)
1993   (sml/apply-theme 'automatic)
1994   (font-lock-add-keywords
1995    'org-mode a/org-mode-font-lock-keywords t))
1996
1997 (bind-keys
1998  ("s-t d" . a/lights-off)
1999  ("s-t l" . a/lights-on))
2000 #+end_src
2001
2002 ** [[https://github.com/bbatsov/crux][crux]]
2003
2004 #+begin_src emacs-lisp
2005 (use-package crux                       ; results in Waiting for git... [2 times]
2006   :defer 1
2007   :bind (("C-c b k" . crux-kill-other-buffers)
2008          ("C-c d"   . crux-duplicate-current-line-or-region)
2009          ("C-c D"   . crux-duplicate-and-comment-current-line-or-region)
2010          ("C-c f c" . crux-copy-file-preserve-attributes)
2011          ("C-c f d" . crux-delete-file-and-buffer)
2012          ("C-c f r" . crux-rename-file-and-buffer)
2013          ("C-c j"   . crux-top-join-line)
2014          ("C-S-j"   . crux-top-join-line)))
2015 #+end_src
2016
2017 ** [[https://github.com/alezost/mwim.el][mwim]]
2018
2019 #+begin_src emacs-lisp
2020 (use-package mwim
2021   :bind (("C-a"    . mwim-beginning-of-code-or-line)
2022          ("C-e"    . mwim-end-of-code-or-line)
2023          ("<home>" . mwim-beginning-of-line-or-code)
2024          ("<end>"  . mwim-end-of-line-or-code)))
2025 #+end_src
2026
2027 ** projectile
2028
2029 #+begin_src emacs-lisp
2030 (use-package projectile
2031   :bind-keymap ("C-c P" . projectile-command-map)
2032   :config
2033   (projectile-mode)
2034
2035   (defun my-projectile-invalidate-cache (&rest _args)
2036     ;; ignore the args to `magit-checkout'
2037     (projectile-invalidate-cache nil))
2038
2039   (eval-after-load 'magit-branch
2040     '(progn
2041        (advice-add 'magit-checkout
2042                    :after #'my-projectile-invalidate-cache)
2043        (advice-add 'magit-branch-and-checkout
2044                    :after #'my-projectile-invalidate-cache)))
2045   :custom (projectile-completion-system 'ivy))
2046 #+end_src
2047
2048 ** [[https://github.com/Wilfred/helpful][helpful]]
2049
2050 #+begin_src emacs-lisp
2051 (use-package helpful
2052   :defer 3
2053   :bind
2054   (("C-S-h c" . helpful-command)
2055    ("C-S-h f" . helpful-callable)        ; helpful-function
2056    ("C-S-h v" . helpful-variable)
2057    ("C-S-h k" . helpful-key)
2058    ("C-S-h p" . helpful-at-point)))
2059 #+end_src
2060
2061 ** [[https://github.com/EricCrosson/unkillable-scratch][unkillable-scratch]]
2062
2063 Make =*scratch*= and =*Messages*= unkillable.
2064
2065 #+begin_src emacs-lisp
2066 (use-package unkillable-scratch
2067   :defer 3
2068   :config
2069   (unkillable-scratch 1)
2070   :custom
2071   (unkillable-buffers '("^\\*scratch\\*$" "^\\*Messages\\*$")))
2072 #+end_src
2073
2074 ** [[https://github.com/davep/boxquote.el][boxquote.el]]
2075
2076 #+begin_example
2077 ,----
2078 | make pretty boxed quotes like this
2079 `----
2080 #+end_example
2081
2082 #+begin_src emacs-lisp
2083 (use-package boxquote
2084   :defer 3
2085   :bind
2086   (:prefix-map a/boxquote-prefix-map
2087    :prefix "C-c q"
2088    ("b"   . boxquote-buffer)
2089    ("B"   . boxquote-insert-buffer)
2090    ("d"   . boxquote-defun)
2091    ("F"   . boxquote-insert-file)
2092    ("hf"  . boxquote-describe-function)
2093    ("hk"  . boxquote-describe-key)
2094    ("hv"  . boxquote-describe-variable)
2095    ("hw"  . boxquote-where-is)
2096    ("k"   . boxquote-kill)
2097    ("p"   . boxquote-paragraph)
2098    ("q"   . boxquote-boxquote)
2099    ("r"   . boxquote-region)
2100    ("s"   . boxquote-shell-command)
2101    ("t"   . boxquote-text)
2102    ("T"   . boxquote-title)
2103    ("u"   . boxquote-unbox)
2104    ("U"   . boxquote-unbox-region)
2105    ("y"   . boxquote-yank)
2106    ("M-q" . boxquote-fill-paragraph)
2107    ("M-w" . boxquote-kill-ring-save)))
2108 #+end_src
2109
2110 Also see [[https://www.emacswiki.org/emacs/rebox2][rebox2]].
2111
2112 ** orgalist
2113
2114 #+begin_src emacs-lisp
2115 (use-package orgalist
2116   :after message
2117   :hook (message-mode . orgalist-mode))
2118 #+end_src
2119
2120 ** typo.el
2121
2122 #+begin_src emacs-lisp
2123 (use-package typo
2124   :defer 2
2125   :config
2126   (typo-global-mode 1)
2127   :hook (text-mode . typo-mode))
2128 #+end_src
2129
2130 ** hl-todo
2131
2132 #+begin_src emacs-lisp
2133 (use-package hl-todo
2134   :defer 4
2135   :config
2136   (global-hl-todo-mode))
2137 #+end_src
2138
2139 ** shrink-path
2140
2141 #+begin_src emacs-lisp
2142 (use-package shrink-path
2143   :defer 2
2144   :after eshell
2145   :config
2146   (defun +eshell/prompt ()
2147     (let ((base/dir (shrink-path-prompt default-directory)))
2148       (concat (propertize (car base/dir)
2149                           'face 'font-lock-comment-face)
2150               (propertize (cdr base/dir)
2151                           'face 'font-lock-constant-face)
2152               (propertize (+eshell--current-git-branch)
2153                           'face 'font-lock-function-name-face)
2154               "\n"
2155               ;; "λ"
2156               ;; (propertize "λ" 'face 'eshell-prompt)
2157               ;; needed for the input text to not have prompt face
2158               (propertize "λ " 'face 'default))))
2159
2160   (defun +eshell--current-git-branch ()
2161     (let ((branch (car (loop for match in (split-string (shell-command-to-string "git branch") "\n")
2162                              when (string-match "^\*" match)
2163                              collect match))))
2164       (if (not (eq branch nil))
2165           (concat " " (substring branch 2))
2166         "")))
2167   (setq eshell-prompt-regexp "\\(.*\n\\)*λ "
2168                          eshell-prompt-function #'+eshell/prompt))
2169 #+end_src
2170
2171 ** [[https://github.com/peterwvj/eshell-up][eshell-up]]
2172
2173 #+begin_src emacs-lisp
2174 (use-package eshell-up
2175   :after eshell
2176   :commands eshell-up)
2177 #+end_src
2178
2179 ** multi-term
2180
2181 #+begin_src emacs-lisp
2182 (use-package multi-term
2183   :defer 3
2184   :bind (("C-c a s m" . multi-term-dedicated-toggle)
2185          :map term-mode-map
2186          ("C-c C-j" . term-char-mode)
2187          :map term-raw-map
2188          ("C-c C-j" . term-line-mode))
2189   :config
2190   (setq multi-term-program "/bin/screen"
2191         ;; TODO: add separate bindings for connecting to existing
2192         ;; session vs. always creating a new one
2193         multi-term-dedicated-select-after-open-p t
2194         multi-term-dedicated-window-height 20
2195         multi-term-dedicated-max-window-height 30
2196         term-bind-key-alist
2197         '(("C-c C-c" . term-interrupt-subjob)
2198           ("C-c C-e" . term-send-esc)
2199           ("C-k" . kill-line)
2200           ("C-y" . term-paste)
2201           ("M-f" . term-send-forward-word)
2202           ("M-b" . term-send-backward-word)
2203           ("M-p" . term-send-up)
2204           ("M-n" . term-send-down)
2205           ("<C-backspace>" . term-send-backward-kill-word)
2206           ("<M-DEL>" . term-send-backward-kill-word)
2207           ("M-d" . term-send-delete-word)
2208           ("M-," . term-send-raw)
2209           ("M-." . comint-dynamic-complete))
2210         term-unbind-key-alist
2211         '("C-z" "C-x" "C-c" "C-h" "C-y" "<ESC>")))
2212 #+end_src
2213
2214 ** page-break-lines
2215
2216 #+begin_src emacs-lisp
2217 (use-package page-break-lines
2218   :config
2219   (global-page-break-lines-mode))
2220 #+end_src
2221
2222 ** expand-region
2223
2224 #+begin_src emacs-lisp
2225 (use-package expand-region
2226   :bind ("C-=" . er/expand-region))
2227 #+end_src
2228
2229 ** multiple-cursors
2230
2231 #+begin_src emacs-lisp
2232 (use-package multiple-cursors
2233   :bind
2234   (("C-S-<mouse-1>" . mc/add-cursor-on-click)
2235    (:prefix-map a/mc-prefix-map
2236                :prefix "C-c m"
2237                ("c" . mc/edit-lines)
2238                ("n" . mc/mark-next-like-this)
2239                ("p" . mc/mark-previous-like-this)
2240                ("a" . mc/mark-all-like-this))))
2241 #+end_src
2242
2243 ** forge
2244
2245 #+begin_src emacs-lisp
2246 (use-package forge
2247   :after magit
2248   :demand)
2249 #+end_src
2250
2251 ** yasnippet
2252
2253 #+begin_src emacs-lisp
2254 (use-package yasnippet
2255   :defer 3
2256   :config
2257   (defconst yas-verbosity-cur yas-verbosity)
2258   (setq yas-verbosity 2)
2259   (add-to-list 'yas-snippet-dirs "~/src/git/guix/etc/snippets")
2260   (yas-reload-all)
2261   (setq yas-verbosity yas-verbosity-cur)
2262   :hook
2263   (text-mode . yas-minor-mode))
2264 #+end_src
2265
2266 * Email
2267 :PROPERTIES:
2268 :CUSTOM_ID: email
2269 :END:
2270
2271 #+begin_src emacs-lisp
2272 (defvar a/maildir (expand-file-name "~/mail/"))
2273 (with-eval-after-load 'recentf
2274   (add-to-list 'recentf-exclude a/maildir))
2275 #+end_src
2276
2277 ** Gnus
2278
2279 #+begin_src emacs-lisp
2280 (setq
2281  a/gnus-init-file  (no-littering-expand-etc-file-name "gnus")
2282  mail-user-agent   'gnus-user-agent
2283  read-mail-command 'gnus)
2284
2285 (use-feature gnus
2286   :bind (("s-m"   . gnus)
2287          ("s-M"   . gnus-unplugged))
2288   :init
2289   (setq
2290    gnus-select-method '(nnnil "")
2291    gnus-secondary-select-methods
2292    '((nnimap "amin"
2293             (nnimap-stream plain)
2294             (nnimap-address "127.0.0.1")
2295             (nnimap-server-port 143)
2296             (nnimap-authenticator plain)
2297             (nnimap-user "amin@bndl.org"))
2298      (nnimap "uwaterloo"
2299              (nnimap-stream plain)
2300              (nnimap-address "127.0.0.1")
2301              (nnimap-server-port 143)
2302              (nnimap-authenticator plain)
2303              (nnimap-user "abandali@uwaterloo.ca"))
2304      (nnimap "csclub"
2305              (nnimap-stream plain)
2306              (nnimap-address "127.0.0.1")
2307              (nnimap-server-port 143)
2308              (nnimap-authenticator plain)
2309              (nnimap-user "abandali@csclub.uw")))
2310    gnus-message-archive-group "nnimap+amin:Sent"
2311    gnus-parameters
2312    '(("gnu.*"
2313       (gcc-self . t)))
2314    gnus-large-newsgroup  50
2315    gnus-home-directory   (no-littering-expand-var-file-name "gnus/")
2316    gnus-directory        (concat gnus-home-directory "news/")
2317    message-directory     (concat gnus-home-directory "mail/")
2318    nndraft-directory     (concat gnus-home-directory "drafts/")
2319    gnus-save-newsrc-file nil
2320    gnus-read-newsrc-file nil
2321    gnus-interactive-exit nil
2322    gnus-gcc-mark-as-read t)
2323   :config
2324   (require 'ebdb)
2325   (require 'ebdb-mua)
2326   (require 'ebdb-gnus))
2327
2328 (use-feature gnus-art
2329   :config
2330   (setq
2331    gnus-visible-headers
2332    (concat gnus-visible-headers "\\|^List-Id:\\|^X-RT-Originator:\\|^User-Agent:")
2333    gnus-sorted-header-list
2334    '("^From:" "^Subject:" "^Summary:" "^Keywords:"
2335      "^Followup-To:" "^To:" "^Cc:" "X-RT-Originator"
2336      "^Newsgroups:" "List-Id:" "^Organization:"
2337      "^User-Agent:" "^Date:")
2338   ;; local-lapsed article dates
2339   ;; from https://www.emacswiki.org/emacs/GnusFormatting#toc11
2340   gnus-article-date-headers '(user-defined)
2341   gnus-article-time-format
2342   (lambda (time)
2343     (let* ((date (format-time-string "%a, %d %b %Y %T %z" time))
2344            (local (article-make-date-line date 'local))
2345            (combined-lapsed (article-make-date-line date
2346                                                     'combined-lapsed))
2347            (lapsed (progn
2348                      (string-match " (.+" combined-lapsed)
2349                      (match-string 0 combined-lapsed))))
2350       (concat local lapsed))))
2351   (bind-keys
2352    :map gnus-article-mode-map
2353    ("r"   . gnus-article-reply-with-original)
2354    ("R"   . gnus-article-wide-reply-with-original)
2355    ("M-L" . org-store-link)))
2356
2357 (use-feature gnus-sum
2358   :bind (:map gnus-summary-mode-map
2359               :prefix-map a/gnus-summary-prefix-map
2360               :prefix "v"
2361               ("r" . gnus-summary-reply)
2362               ("w" . gnus-summary-wide-reply)
2363               ("v" . gnus-summary-show-raw-article))
2364   :config
2365   (bind-keys
2366    :map gnus-summary-mode-map
2367    ("r"   . gnus-summary-reply-with-original)
2368    ("R"   . gnus-summary-wide-reply-with-original)
2369    ("M-L" . org-store-link))
2370   :hook (gnus-summary-mode . a/no-mouse-autoselect-window))
2371
2372 (use-feature gnus-msg
2373   :config
2374   (setq gnus-posting-styles
2375         '((".*"
2376            (address "amin@bndl.org")
2377            (body "\nBest,\namin\n")
2378            (eval (setq a/message-cite-say-hi t)))
2379           ("gnu.*"
2380            (address "bandali@gnu.org")
2381            (eval (set (make-local-variable 'message-user-fqdn) "fencepost.gnu.org")))
2382           ((header "subject" "ThankCRM")
2383            (to "webmasters-comment@gnu.org")
2384            (body "\nAdded  to 2019supporters.html.\n\nMoving to campaigns.\n\n-amin\n")
2385            (eval (setq a/message-cite-say-hi nil)))
2386           ("nnimap\\+uwaterloo:.*"
2387            (address "abandali@uwaterloo.ca")
2388            (gcc "\"nnimap+uwaterloo:Sent Items\""))
2389           ("nnimap\\+csclub:.*"
2390            (address "abandali@csclub.uwaterloo.ca")
2391            (gcc "nnimap+csclub:Sent")))))
2392
2393 (use-feature gnus-topic
2394   :hook (gnus-group-mode . gnus-topic-mode)
2395   :config (setq gnus-topic-line-format "%i[ %A: %(%{%n%}%) ]%v\n"))
2396
2397 (use-feature gnus-agent
2398   :config
2399   (setq gnus-agent-synchronize-flags 'ask)
2400   :hook (gnus-group-mode . gnus-agent-mode))
2401
2402 (use-feature gnus-group
2403   :config
2404   (setq gnus-permanently-visible-groups "\\(:INBOX$\\|:gnu$\\)"))
2405
2406 (use-feature mm-decode
2407   :config
2408   (setq mm-discouraged-alternatives '("text/html" "text/richtext")))
2409 #+end_src
2410
2411 ** sendmail
2412
2413 #+begin_src emacs-lisp
2414 (use-feature sendmail
2415   :config
2416   (setq sendmail-program "/usr/bin/msmtp"
2417         ;; message-sendmail-extra-arguments '("-v" "-d")
2418         mail-specify-envelope-from t
2419         mail-envelope-from 'header))
2420 #+end_src
2421
2422 ** message
2423
2424 #+begin_src emacs-lisp
2425 (use-feature message
2426   :config
2427   ;; redefine for a simplified In-Reply-To header
2428   ;; (see https://todo.sr.ht/~sircmpwn/lists.sr.ht/67)
2429   (defun message-make-in-reply-to ()
2430     "Return the In-Reply-To header for this message."
2431     (when message-reply-headers
2432       (let ((from (mail-header-from message-reply-headers))
2433                 (msg-id (mail-header-id message-reply-headers)))
2434         (when from
2435           msg-id))))
2436
2437   (defconst a/message-cite-style-format "On %Y-%m-%d %l:%M %p, %N wrote:")
2438   (defconst message-cite-style-bandali
2439     '((message-cite-function  'message-cite-original)
2440       (message-citation-line-function  'message-insert-formatted-citation-line)
2441       (message-cite-reply-position 'traditional)
2442       (message-yank-prefix  "> ")
2443       (message-yank-cited-prefix  ">")
2444       (message-yank-empty-prefix  ">")
2445       (message-citation-line-format
2446        (if a/message-cite-say-hi
2447            (concat "Hi %F,\n\n" a/message-cite-style-format)
2448          a/message-cite-style-format)))
2449     "Citation style based on Mozilla Thunderbird's. Use with message-cite-style.")
2450   (setq message-cite-style 'message-cite-style-bandali
2451         message-kill-buffer-on-exit t
2452         message-send-mail-function 'message-send-mail-with-sendmail
2453         message-sendmail-envelope-from 'header
2454         message-dont-reply-to-names
2455         "\\(\\(amin@bndl\\.org\\)\\|\\(.*@\\(aminb\\|amin\\.bndl\\)\\.org\\)\\|\\(\\(bandali\\|aminb?\\|mab\\)@gnu\\.org\\)\\|\\(a\\(min\\.\\)?bandali@uwaterloo\\.ca\\)\\|\\(abandali@csclub\\.uwaterloo\\.ca\\)\\)")
2456   (require 'company-ebdb)
2457   :hook (;; (message-setup . mml-secure-message-sign-pgpmime)
2458          (message-mode . flyspell-mode)
2459          (message-mode . (lambda ()
2460                            ;; (setq fill-column 65
2461                            ;;       message-fill-column 65)
2462                            (make-local-variable 'company-idle-delay)
2463                            (setq company-idle-delay 0.2))))
2464   ;; :custom-face
2465   ;; (message-header-subject ((t (:foreground "#111" :weight semi-bold))))
2466   ;; (message-header-to      ((t (:foreground "#111" :weight normal))))
2467   ;; (message-header-cc      ((t (:foreground "#333" :weight normal))))
2468   )
2469
2470 (with-eval-after-load 'mml-sec
2471   (setq mml-secure-openpgp-encrypt-to-self t
2472         mml-secure-openpgp-sign-with-sender t))
2473 #+end_src
2474
2475 ** footnote
2476
2477 Convenient footnotes in =message-mode=.
2478
2479 #+begin_src emacs-lisp
2480 (use-feature footnote
2481   :after message
2482   ;; :config
2483   ;; (setq footnote-start-tag ""
2484   ;;       footnote-end-tag   ""
2485   ;;       footnote-style     'unicode)
2486   :bind
2487   (:map message-mode-map
2488         :prefix-map a/footnote-prefix-map
2489         :prefix "C-c f"
2490         ("a" . footnote-add-footnote)
2491         ("b" . footnote-back-to-message)
2492         ("c" . footnote-cycle-style)
2493         ("d" . footnote-delete-footnote)
2494         ("g" . footnote-goto-footnote)
2495         ("r" . footnote-renumber-footnotes)
2496         ("s" . footnote-set-style)))
2497 #+end_src
2498
2499 ** ebdb
2500
2501 #+begin_src emacs-lisp
2502 (use-package ebdb
2503   :straight (:host github :repo "girzel/ebdb")
2504   :after gnus
2505   :bind (:map gnus-group-mode-map ("e" . ebdb))
2506   :config
2507   (setq ebdb-sources (no-littering-expand-var-file-name "ebdb"))
2508   (with-eval-after-load 'swiper
2509     (add-to-list 'swiper-font-lock-exclude 'ebdb-mode t)))
2510
2511 (use-feature ebdb-com
2512   :after ebdb)
2513
2514 ;; (use-package ebdb-complete
2515 ;;   :after ebdb
2516 ;;   :config
2517 ;;   (ebdb-complete-enable))
2518
2519 (use-package company-ebdb
2520   :config
2521   (defun company-ebdb--post-complete (_) nil))
2522
2523 (use-feature ebdb-gnus
2524   :after ebdb
2525   :custom
2526   (ebdb-gnus-window-configuration
2527    '(article
2528      (vertical 1.0
2529                (summary 0.25 point)
2530                (horizontal 1.0
2531                            (article 1.0)
2532                            (ebdb-gnus 0.3))))))
2533
2534 (use-feature ebdb-mua
2535   :after ebdb
2536   ;; :custom (ebdb-mua-pop-up nil)
2537   )
2538
2539 ;; (use-package ebdb-message
2540 ;;   :after ebdb)
2541
2542
2543 ;; (use-package ebdb-vcard
2544 ;;   :after ebdb)
2545 #+end_src
2546
2547 ** message-x
2548
2549 #+begin_src emacs-lisp
2550 (use-package message-x)
2551 #+end_src
2552
2553 #+begin_src emacs-lisp :tangle no
2554 (use-package message-x
2555   :custom
2556   (message-x-completion-alist
2557    (quote
2558     (("\\([rR]esent-\\|[rR]eply-\\)?[tT]o:\\|[bB]?[cC][cC]:" . gnus-harvest-find-address)
2559      ((if
2560           (boundp
2561            (quote message-newgroups-header-regexp))
2562           message-newgroups-header-regexp message-newsgroups-header-regexp)
2563       . message-expand-group)))))
2564 #+end_src
2565
2566 ** COMMENT gnus-harvest
2567
2568 #+begin_src emacs-lisp
2569 (use-package gnus-harvest
2570   :commands gnus-harvest-install
2571   :demand t
2572   :config
2573   (if (featurep 'message-x)
2574       (gnus-harvest-install 'message-x)
2575     (gnus-harvest-install)))
2576 #+end_src
2577
2578 * IRC
2579 :PROPERTIES:
2580 :CUSTOM_ID: irc
2581 :END:
2582
2583 Now with ERC!
2584
2585 #+begin_src emacs-lisp
2586 (use-package znc
2587   :straight (:host nil :repo "https://git.bndl.org/amin/znc.el")
2588   :bind (("C-c a e e" . znc-erc)
2589          ("C-c a e a" . znc-all))
2590   :config
2591   (let ((pwd (let ((auth (auth-source-search :host "znca")))
2592                (cond
2593                 ((null auth) (error "Couldn't find znca's authinfo"))
2594                 (t (funcall (plist-get (car auth) :secret)))))))
2595     (setq znc-servers
2596           `(("znc.bndl.org" 1337 t
2597              ((freenode "amin/freenode" ,pwd)))
2598             ("znc.bndl.org" 1337 t
2599              ((moznet "amin/moznet" ,pwd)))))))
2600 #+end_src
2601
2602 * Blogging
2603 :PROPERTIES:
2604 :CUSTOM_ID: blogging
2605 :END:
2606
2607 ** [[https://ox-hugo.scripter.co][ox-hugo]]
2608
2609 #+begin_src emacs-lisp
2610 (use-package ox-hugo
2611   :after ox
2612   :demand)
2613 #+end_src
2614
2615 * Post initialization
2616 :PROPERTIES:
2617 :CUSTOM_ID: post-initialization
2618 :END:
2619
2620 Display how long it took to load the init file.
2621
2622 #+begin_src emacs-lisp
2623 (message "Loading %s...done (%.3fs)" user-init-file
2624          (float-time (time-subtract (current-time)
2625                                     a/before-user-init-time)))
2626 #+end_src
2627
2628 * Footer
2629 :PROPERTIES:
2630 :CUSTOM_ID: footer
2631 :END:
2632
2633 #+begin_src emacs-lisp :comments none
2634 ;;; init.el ends here
2635 #+end_src
2636
2637 * COMMENT Local Variables                                           :ARCHIVE:
2638 # Local Variables:
2639 # eval: (add-hook 'after-save-hook #'a/async-babel-tangle 'append 'local)
2640 # eval: (when (featurep 'typo (typo-mode -1)))
2641 # End: