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dotfiles/modules/core.org

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Core

Minimal configuration to make Emacs usable for my own personal workflow. This does little in the ways of improving the visuals, only removing what's included by default and not required. Read more about my technique in my post Immutable Emacs1.

  • Packages are managed with straight.el2

  • Packages are installed with use-package3

Babel

Organize your plain life in plain text

Org mode4 is one of the hallmark features of Emacs, and provides the basis for my Literate Programming5 platform. It's essentially a markdown language with rich features for project management, scheduling, development, and writing. It's hard to convey everything within its capabilities.

  • Setup shell and emacs-lisp as Babel Languages6

  • Configure Structure Templates7 for both languages

(use-package org
  :hook (org-mode . (lambda ()
          (org-indent-mode)
          (visual-line-mode 1)
          (variable-pitch-mode 1)))
  :custom (org-ellipsis " ▾")
          (org-log-done 'time)
          (org-log-into-drawer t)
          (org-return-follows-link t)
          (org-image-actual-width nil)
          (org-directory dotfiles/home)
          (org-src-fontify-natively t)
          (org-src-tab-acts-natively t)
          (org-src-preserve-indentation t)
          (org-confirm-babel-evaluate nil)
          (org-todo-keywords '((sequence "TODO" "START" "WAIT" "DONE")))
  :config (require 'org-tempo)
          (add-to-list 'org-structure-template-alist '("s" . "src"))
          (add-to-list 'org-structure-template-alist '("q" . "quote"))
          (add-to-list 'org-structure-template-alist '("e" . "example"))
          (add-to-list 'org-structure-template-alist '("sh" . "src shell"))
          (add-to-list 'org-structure-template-alist '("el" . "src emacs-lisp"))
          (org-babel-do-load-languages 'org-babel-load-languages '((shell . t)
                                                                   (emacs-lisp . t))))

Cleanup

Despite having our stateful and immutable configurations seperate, it's good practice to make efforts to reduce the trash created by Emacs. Install no-littering3 to reduce the files created by Emacs.

(use-package no-littering)

Now that we've taken care of how it acts, we can work on how it looks. Emacs' default user interface is horrendous, let's do something about that.

(setq inhibit-startup-message t
      initial-scratch-message "")

(global-prettify-symbols-mode)

(when (fboundp 'tooltip-mode)
  (tooltip-mode -1))
(when (fboundp 'tool-bar-mode)
  (tool-bar-mode -1))
(when (fboundp 'menu-bar-mode)
  (menu-bar-mode -1))
(when (fboundp 'scroll-bar-mode)
  (scroll-bar-mode -1))

Performance

Emacs has a long history of running on machines without gigabytes of available memory, let it realize its full potential by increasing the garbage collection threshold and the minimum prime bit size.

(setq gc-cons-threshold most-positive-fixnum
      gnutls-min-prime-bits 4096)

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