** Commentary
-#+begin_src emacs-lisp
+#+begin_src emacs-lisp :comments none
;;; Commentary:
;; Emacs configuration of Amin Bandali, computer scientist and functional
;; THIS FILE IS AUTO-GENERATED FROM `init.org'.
#+end_src
-* Config
+* Initial setup
-#+begin_src emacs-lisp
+#+begin_src emacs-lisp :comments none
;;; Code:
#+end_src
-TODO
+** Startup time
+
+Measure and display startup time. Also, temporarily increase
+~gc-cons-threshhold~ during startup to reduce reduce garbage
+collection frequency. Taken from [[https://github.com/dieggsy/dotfiles/tree/3d95bc08033920e077855caf545a975eba52d28d/emacs.d#startup-time][here]].
+
+#+begin_src emacs-lisp
+(defconst aminb/emacs-start-time (current-time))
+(defconst aminb/gc-cons-threshold gc-cons-threshold)
+(defconst aminb/gc-cons-percentage gc-cons-percentage)
+(defvar aminb/file-name-handler-alist file-name-handler-alist)
+(setq gc-cons-threshold 400000000
+ gc-cons-percentage 0.6
+ file-name-handler-alist nil
+ ;; sidesteps a bug when profiling with esup
+ esup-child-profile-require-level 0)
+#+end_src
+
+Reset the variables back to default after init.
+
+#+begin_src emacs-lisp
+(add-hook
+ 'after-init-hook
+ `(lambda ()
+ (setq gc-cons-threshold aminb/gc-cons-threshold
+ gc-cons-percentage aminb/gc-cons-percentage
+ file-name-handler-alist aminb/file-name-handler-alist)
+ (let ((elapsed (float-time (time-subtract (current-time)
+ aminb/emacs-start-time))))
+ (message "Loading %s...done (%.3fs) [after-init]"
+ ,load-file-name elapsed))))
+#+end_src
+
+** Package management
+
+*** =straight.el=
+
+#+begin_quote
+Next-generation, purely functional package manager for the Emacs
+hacker.
+#+end_quote
+
+=straight.el= allows me to have a fully reproducible Emacs setup.
+
+**** Bootstrap
+
+#+begin_src emacs-lisp
+(let ((bootstrap-file (concat user-emacs-directory "straight/repos/straight.el/bootstrap.el"))
+ (bootstrap-version 3))
+ (unless (file-exists-p bootstrap-file)
+ (with-current-buffer
+ (url-retrieve-synchronously
+ "https://raw.githubusercontent.com/raxod502/straight.el/develop/install.el"
+ 'silent 'inhibit-cookies)
+ (goto-char (point-max))
+ (eval-print-last-sexp)))
+ (load bootstrap-file nil 'nomessage))
+#+end_src
+
+**** Useful helpers
+
+#+begin_src emacs-lisp
+(defun straight-reload-init ()
+ "Reload init.el."
+ (interactive)
+ (straight-transaction
+ (straight-mark-transaction-as-init)
+ (message "Reloading init.el...")
+ (load user-init-file nil 'nomessage)
+ (message "Reloading init.el... done.")))
+
+(defun straight-eval-buffer ()
+ "Evaluate the current buffer as Elisp code."
+ (interactive)
+ (message "Evaluating %s..." (buffer-name))
+ (straight-transaction
+ (if (null buffer-file-name)
+ (eval-buffer)
+ (when (string= buffer-file-name user-init-file)
+ (straight-mark-transaction-as-init))
+ (load-file buffer-file-name)))
+ (message "Evaluating %s... done." (buffer-name)))
+#+end_src
+
+*** =use-package=
+
+#+begin_quote
+A use-package declaration for simplifying your .emacs.
+#+end_quote
+
+=use-package= is an awesome utility for managing and configuring
+packages in a neatly organized way and without compromising on
+performance. So let's install it using =striaght.el= and have it use
+=straight.el= for installing packages.
+
+#+begin_src emacs-lisp
+(straight-use-package 'use-package)
+(setq straight-use-package-by-default t)
+#+end_src
+
+** No littering in =~/.emacs.d=
+
+#+begin_quote
+Help keeping ~/.emacs.d clean.
+#+end_quote
+
+By default, even for Emacs' built-in packages, the configuration files
+and persistent data are all over the place. Use =no-littering= to help
+contain the mess.
+
+#+begin_src emacs-lisp
+(use-package no-littering
+ :demand t
+ :config
+ (savehist-mode 1)
+ (add-to-list 'savehist-additional-variables 'kill-ring)
+ (save-place-mode 1)
+ (setq auto-save-file-name-transforms
+ `((".*" ,(no-littering-expand-var-file-name "auto-save/") t))))
+#+end_src
+
+** Custom file (=custom.el=)
+
+I'm not planning on using the custom file much, but even so, I
+definitely don't want it mixing with =init.el=. So, here, let's give
+it it's own file.
+
+#+begin_src emacs-lisp
+(setq custom-file (no-littering-expand-etc-file-name "custom.el"))
+(when (file-exists-p custom-file)
+ (load custom-file))
+#+end_src
+
+** Backups
+
+Emacs' default backup settings aren't that great. Let's use more
+sensible options. See documentation for the ~make-backup-file~
+variable.
+
+#+begin_src emacs-lisp
+(setq backup-by-copying t
+ version-control t)
+#+end_src
+
+** Org
+
+#+begin_src emacs-lisp
+(setq org-src-tab-acts-natively t
+ org-src-preserve-indentation nil
+ org-edit-src-content-indentation 0)
+#+end_src
* Footer
#+begin_src emacs-lisp :comments none
-
;;; init.el ends here
#+end_src
projects / ~bandali / configs / blobdiff